Find the Width of Columns of a Grid, 2640. Number of Students Unable to Eat Lunch, 1703. Flatten a Multilevel Doubly Linked List, 440. Python - Way to restart a for loop, similar to "continue" for while loops? The k-th Lexicographical String of All Happy Strings of Length n, 1418. Longest Chunked Palindrome Decomposition, 1150. Maximum Value at a Given Index in a Bounded Array, 1805. Find XOR Sum of All Pairs Bitwise AND, 1836. 24 896 views 1 year ago UNITED STATES In this video we are solving Leetcode problem # 1047: Remove All Adjacent Duplicates in a String. Find the Punishment Number of an Integer, 2701. Longest Palindromic Substring 6. Maximum Sum Obtained of Any Permutation, 1593. 1047. Minimum Elements to Add to Form a Given Sum, 1786. Subtract the Product and Sum of Digits of an Integer, 1282. Iterate the string and append each character to stack, if top of stack is same as current then pop the top out of stack and continue to next iteration. Groups of Special-Equivalent Strings, 915. Construct Smallest Number From DI String, 2378. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Queries on Number of Points Inside a Circle, 1830. Lexicographically Smallest String After Applying Operations, 1628. Construct Binary Tree from Inorder and Postorder Traversal, 107. Number of Visible People in a Queue, 1945. Smallest Range Covering Elements from K Lists, 659. Form Array by Concatenating Subarrays of Another Array, 1767. Convert an Array Into a 2D Array With Conditions, 2616. domthedeveloper 231 May 06, 2022 First see Solution to LC 1047. Count the Number of Consistent Strings, 1685. Special Array With X Elements Greater Than or Equal X, 1611. Delete all neighbor repeats in the string 1047. Difference Between Element Sum and Digit Sum of an Array, 2538. Maximize the Topmost Element After K Moves, 2203. Longest Substring Without Repeating Characters, 17. Remove Colored Pieces if Both Neighbors are the Same Color, 2039. Minimum Time to Type Word Using Special Typewriter, 1976. By using this website, you agree with our Cookies Policy. We repeatedly make k duplicate removals on s until we no longer can. Does the policy change for AI-generated content affect users who (want to) How to remove consecutive duplicate elements from a list? Also, it helps in clearing technical interviews at top tech companies like Microsoft, Google, Amazon, Facebook, Walmart, Apple etc. Maximum Value of a String in an Array, 2499. Partition String Into Substrings With Values at Most K, 2524. Find the Minimum and Maximum Number of Nodes Between Critical Points, 2059. Number of Different Subsequences GCDs, 1820. All Ancestors of a Node in a Directed Acyclic Graph, 2193. Minimum Cost to Move Chips to The Same Position, 1218. Minimum White Tiles After Covering With Carpets, 2210. Element Appearing More Than 25% In Sorted Array, 1290. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Use a generator to iterate over the elements of the list, and yield a new one only when it has changed. Search K. Minimized Maximum of Products Distributed to Any Store, 2068. Closest Nodes Queries in a Binary Search Tree, 2477. Count Number of Pairs With Absolute Difference K, 2007. Keep Multiplying Found Values by Two, 2155. Not the answer you're looking for? Programmer Sought . Convert Sorted List to Binary Search Tree, 116. Minimum Non-Zero Product of the Array Elements, 1972. Maximum Number of Robots Within Budget, 2399. Append Characters to String to Make Subsequence, 2489. Product of Two Run-Length Encoded Arrays, 1869. Number of Substrings With Fixed Ratio, 2491. Remove All Occurrences of a Substring, 1911. Construct Binary Search Tree from Preorder Traversal, 1010. Time Needed to Rearrange a Binary String, 2383. Number of Pairs of Interchangeable Rectangles, 2002. Largest Submatrix With Rearrangements, 1731. Cannot retrieve contributors at this time, 1047. Minimum Swaps to Group All 1's Together II, 2135. At first delete duplicates bb, then string is aacaca, then remove aa, then string is caca, then no such duplicates are there. Number of Strings That Appear as Substrings in Word, 1968. Apply Bitwise Operations to Make Strings Equal, 2550. Binary Search Tree to Greater Sum Tree, 1039. Split the Array to Make Coprime Products, 2586. Return the final string after all such duplicate removals have been made. A duplicate removal consists of choosing two adjacent and equal letters and removing them. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Maximum Number of Accepted Invitations, 1821. Find the Prefix Common Array of Two Arrays, 2660. Smallest Rotation with Highest Score, 801. Average Time of Process per Machine, 1662. We repeatedly make duplicate removals on S until we no longer can. Minimum Number of Flips to Convert Binary Matrix to Zero Matrix, 1285. Daily Coding Problem. Clone Binary Tree With Random Pointer, 1489. Number of Ways to Buy Pens and Pencils, 2244. Recover a Tree From Preorder Traversal, 1031. Minimum Operations to Make a Subsequence, 1714. Longest Line of Consecutive One in Matrix, 570. . Number of Connected Components in an Undirected Graph, 331. Two Sum 2. Minimum Deletions to Make Array Beautiful, 2218. All People Report to the Given Manager, 1276. Replace Employee ID With The Unique Identifier, 1379. Lowest Common Ancestor of a Binary Tree, 255. Replace All ? Number of Valid Words for Each Puzzle, 1180. Maximum Trailing Zeros in a Cornered Path, 2246. Shortest Subarray with Sum at Least K, 865. Form Largest Integer With Digits That Add up to Target, 1450. Longest Substring with At Most K Distinct Characters, 363. We repeatedly make duplicate removals on s until we no longer can. Number of Ways to Stay in the Same Place After Some Steps, 1270. Minimum Replacements to Sort the Array, 2369. Longest Subarray of 1's After Deleting One Element, 1495. @katrielalex's solution is more pythonic, but if you did need to modify the list in-place without making a copy, you could use a while loop and break when you catch an IndexError. Maximum Number of Events That Can Be Attended, 1354. Maximum Number of Vowels in a Substring of Given Length, 1457. Minimum Number of Operations to Move All Balls to Each Box, 1770. Find Players With Zero or One Losses, 2226. Count the Number of Complete Components, 2689. Make Array Zero by Subtracting Equal Amounts, 2358. Replace the Substring for Balanced String, 1237. Largest Number At Least Twice of Others, 762. Vertical Order Traversal of a Binary Tree, 990. A duplicate removal consists of choosing two adjacent and equal letters and removing them.We repeatedly make duplicate removals on s until we no longer can.Return the final string after all such duplicate removals have been made. Minimum Operations to Make the Array Alternating, 2171. I hope this helps in understanding my question and clear the ambiguity. Minimum Domino Rotations For Equal Row, 1008. Minimum Deletions to Make String Balanced, 1658. Maximum Difference Between Node and Ancestor, 1028. Number of People That Can Be Seen in a Grid, 2283. Longest Word in Dictionary through Deleting, 549. Alert Using Same Key-Card Three or More Times in a One Hour Period, 1605. Maximum Sum of 3 Non-Overlapping Subarrays, 702. -updated the above code with suggested improvements. Replace Non-Coprime Numbers in Array, 2200. Reconstruct Original Digits from English, 424. Maximum Sum of Distinct Subarrays With Length K, 2470. Length of Longest Fibonacci Subsequence, 889. Contribute to xuyangwang0825/leetcode-notes-python development by creating an account on GitHub. How to remove all leading whitespace in string in Python? Largest Substring Between Two Equal Characters, 1625. Sort Integers by The Number of 1 Bits, 1358. Maximum Number of Integers to Choose From a Range I, 2556. Divide Intervals Into Minimum Number of Groups, 2410. We repeatedly make duplicate removals on S until we no longer can. It is guaranteed the answer is unique. You are given a string s consisting of lowercase English letters. Distinct Prime Factors of Product of Array, 2522. Minimum Cost of Buying Candies With Discount, 2146. Then, this tutorial can be extremely helpful for you as we have compiled all about how to remove adjacent duplicate characters from a string in Python clearly. Minimum Number of Increments on Subarrays to Form a Target Array, 1533. Remove Duplicates From an Unsorted Linked List, 1838. Minimum Operations to Convert Number, 2060. Remove consecutive duplicate characters from a string in python. Smallest Subarrays With Maximum Bitwise OR, 2412. How to get band structure of isolated Fe atom in Quantum ESPRESSO? Difference Between Ones and Zeros in Row and Column, 2486. Unique Substrings in Wraparound String, 497. Maximum Number of Removable Characters, 1899. Minimum Weighted Subgraph With the Required Paths, 2204. Check If a String Contains All Binary Codes of Size K, 1464. . Minimum Number of Operations to Sort a Binary Tree by Level, 2472. Substrings of Size Three with Distinct Characters, 1878. Maximum Number of Consecutive Values You Can Make, 1802. Number of Operations to Make Network Connected, 1320. Restore the Array From Adjacent Pairs. Minimum Operations to Reduce X to Zero, 1661. The Number of Passengers in Each Bus I, 2143. Construct Binary Tree from Preorder and Postorder Traversal, 893. Merge Triplets to Form Target Triplet, 1900. Detect Pattern of Length M Repeated K or More Times, 1567. Minimum Number of Moves to Make Palindrome, 2196. The Users That Are Eligible for Discount, 2231. Maximum of Minimum Values in All Subarrays, 1951. Sum of Absolute Differences in a Sorted Array, 1687. interesting to find, nums[0] returns an int, while nums[:1] returns a list with a single element! Choose Edges to Maximize Score in a Tree, 2379. Largest Combination With Bitwise AND Greater Than Zero, 2279. Return the final string after all such duplicate removals have been made. Find the Score of All Prefixes of an Array, 2642. Insufficient Nodes in Root to Leaf Paths, 1081. Maximum Candies You Can Get from Boxes, 1299. Maximum Number of Non-Overlapping Subarrays With Sum Equals Target, 1549. The Earliest and Latest Rounds Where Players Compete, 1904. As for manipulating a list in place, it does need thought, but my recommendation would be to read through this section of the documentation and try a few list methods (hint: list.pop(), list.remove(), and learn everything about slices.). Second Minimum Time to Reach Destination, 2046. Minimum Number of Days to Make m Bouquets, 1485. so we will pop out the last element from the stack.so, after the iteration, we have our result in the stack, and we need to join them together into a string without any gaps.so we will pass the stack to the join method on an empty string, and return it. Find the Kth Largest Integer in the Array, 1986. Minimum Deletions to Make Array Divisible, 2345. Number of Dice Rolls With Target Sum, 1156. Got it 1047. Minimize the Maximum Difference of Pairs, 2617. Check if a Parentheses String Can Be Valid, 2117. Maximum Alternating Subsequence Sum, 1913. Minimum Time to Collect All Apples in a Tree, 1449. 1047. Minimum Difference Between Highest and Lowest of K Scores, 1985. Find the Longest Balanced Substring of a Binary String, 2610. Reverse Subarray To Maximize Array Value, 1333. User Activity for the Past 30 Days I, 1142. Remove All Ones With Row and Column Flips II, 2176. Check If All 1's Are at Least Length K Places Away, 1438. Asking for help, clarification, or responding to other answers. A little bit about me, I have offers from Uber India and Amazon India in the past, and I am currently working for Booking.com in Amsterdam. Minimize Max Distance to Gas Station, 793. Maximum Number of Weeks for Which You Can Work, 1954. Minimum Number of Swaps to Make the Binary String Alternating, 1866. Concatenation of Consecutive Binary Numbers, 1684. Maximum Product Difference Between Two Pairs, 1916. Minimum Flips to Make a OR b Equal to c, 1319. Check if Every Row and Column Contains All Numbers, 2134. Suppose the string is abbacaca, then answer will be caca. Minimum Number of Work Sessions to Finish the Tasks, 1989. Partition Array Into Two Arrays to Minimize Sum Difference, 2037. Partition Array Such That Maximum Difference Is K, 2300. Find the Divisibility Array of a String, 2576. It doesn't produce the output as described in the OP's question. Check for Contradictions in Equations, 2309. Maximum Difference by Remapping a Digit, 2567. Paths in Maze That Lead to Same Room, 2078. Minimum Changes To Make Alternating Binary String, 1759. Split a String Into the Max Number of Unique Substrings, 1594. Execute Cancellable Function With Delay, 2721. I like your algorithm a lot. Guess the Majority in a Hidden Array, 1541. Maximum Nesting Depth of the Parentheses, 1616. Find the Minimum Number of Fibonacci Numbers Whose Sum Is K, 1415. Count the Number of Square-Free Subsets, 2575. Final Value of Variable After Performing Operations, 2014. Largest Component Size by Common Factor, 967. Count Negative Numbers in a Sorted Matrix, 1353. 1 Don't use <>. Add Two Numbers 3. Binary String With Substrings Representing 1 To N, 1026. Minimum Moves to Equal Array Elements, 462. Longest Repeating Character Replacement, 426. Minimum Flips in Binary Tree to Get Result, 2314. Count Pairs of Equal Substrings With Minimum Difference, 1798. Evaluate the Bracket Pairs of a String, 1812. Yes. Minimum Total Space Wasted With K Resizing Operations, 1960. Just for study! Minimum Total Cost to Make Arrays Unequal, 2503. To solve this, we will follow these steps Define an array st, and initialize i := 0 while i < length of string if st has some element, and last element of st = st [i], then increase i by 1, and delete last element from st otherwise add string [i] into st, increase i by 1 finally join all elements in st as a string and return Example Number of Subarrays With LCM Equal to K, 2471. Sort the Students by Their Kth Score, 2546. Solution This problem can be solved using a stack. Minimum Amount of Time to Fill Cups, 2340. Largest Number After Mutating Substring, 1950. Leetcode easy problem 1047. Build Array Where You Can Find The Maximum Exactly K Comparisons, 1422. Number of Unique Flavors After Sharing K Candies, 2108. Minimum Subsequence in Non-Increasing Order, 1404. Count Unreachable Pairs of Nodes in an Undirected Graph, 2320. Here's the traditional way, deleting adjacent duplicates in situ, while traversing the list backwards: Update: If you want a generator but (don't have itertools.groupby or (you can type faster than you can read its docs and understand its default behaviour)), here's a six-liner that does the job: Update 2: Concerning the baroque itertools.groupby() and the minimalist object() To get the dedupe_adjacent effect out of itertools.groupby(), you need to wrap a list comprehension around it to throw away the unwanted groupers: or muck about with itertools.imap and/or operators.itemgetter, as seen in another answer. 99. This is what I have so far: Miscellaneous. Maximum Number of Words Found in Sentences, 2115. Sum of Nodes with Even-Valued Grandparent, 1317. Print Immutable Linked List in Reverse, 1269. Minimum Numbers of Function Calls to Make Target Array, 1560. Form Smallest Number From Two Digit Arrays, 2606. Longer Contiguous Segments of Ones than Zeros, 1876. Maximum Value of K Coins From Piles, 2220. Change Minimum Characters to Satisfy One of Three Conditions, 1738. Disconnect Path in a Binary Matrix by at Most One Flip, 2557. Remove All Adjacent Duplicates in String II, 1210. Divide Array Into Increasing Sequences, 1123. Optimize Water Distribution in a Village, 1170. Equal Sum Arrays With Minimum Number of Operations, 1779. People Whose List of Favorite Companies Is Not a Subset of Another List, 1453. Median of Two Sorted Arrays 5. Find Original Array From Doubled Array, 2009. Design an Expression Tree With Evaluate Function, 1633. Get the Second Most Recent Activity, 1371. Max Difference You Can Get From Changing an Integer, 1433. however, it keeps failing for one of those super long test cases and im not able to figure out why. Largest Color Value in a Directed Graph, 1864. Count Different Palindromic Subsequences, 744. How can I remove a key from a Python dictionary? 3. Number of Steps to Reduce a Number to Zero, 1343. Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts, 1466. Construct Target Array With Multiple Sums, 1356. You can modify the passed-in list if you iterate over a copy: Just to show one more way here is another single liner version without indexes: The not part puts the last value to result as only a ends up to result. You signed in with another tab or window. Populating Next Right Pointers in Each Node II, 153. the result has to be like this "xc xc xc". Check if Numbers Are Ascending in a Sentence, 2044. Reverse Integer 8. Minimize Hamming Distance After Swap Operations, 1723. Minimum Number of Days to Eat N Oranges, 1557. The Earliest Moment When Everyone Become Friends, 1104. Maximum Absolute Sum of Any Subarray, 1750. Maximum Number of Achievable Transfer Requests, 1602. Minimize the Difference Between Target and Chosen Elements, 1983. Minimum Absolute Difference Queries, 1909. Maximum Points in an Archery Competition, 2213. Maximum Number of Integers to Choose From a Range II, 2566. A duplicate removal consists of choosing two adjacent and equal letters and removing them. Kth Smallest Product of Two Sorted Arrays, 2041. Calculate the Influence of Each Salesperson, 2375. Explanation: The result of this move is that the string is "aaca", of which only "aa" is possible, so the final string is "ca". Check if Number Has Equal Digit Count and Digit Value, 2287. Remove All Adjacent Duplicates In String Easy 5.7K 221 Companies You are given a string s consisting of lowercase English letters. Find the Quiet Students in All Exams, 1413. Creating and deleting fields in the attribute table using PyQGIS, Adjustment of wort volume when the wort is still hot. This is a really straightforward stack based. Can a pawn move 2 spaces if doing so would cause en passant mate? Remove All Adjacent Duplicates In String. Remove duplicate values next to each other - Python List inside a dictionary. Some languages have iterators with functions to remove the "current item". Check if There is a Path With Equal Number of 0's And 1's, 2511. Find the Maximum Divisibility Score, 2645. Minimum Swaps to Arrange a Binary Grid, 1538. Find the Index of the First Occurrence in a String, 30. Make Number of Distinct Characters Equal, 2535. Leetcode 71) Moving Average from Data Stream (Leetcode 642) Valid Parentheses. Design Graph With Shortest Path Calculator, 2644. Managers with at Least 5 Direct Reports, 571. Find Elements in a Contaminated Binary Tree, 1263. Number of Substrings Containing All Three Characters, 1359. Make Two Arrays Equal by Reversing Subarrays, 1461. 1047. Check if There is a Valid Path in a Grid, 1398. Divide Nodes Into the Maximum Number of Groups, 2494. This idea is inspired by Schlemiel painter's algorithm and implemented below in C, C++, Java, and Python: C C++ Java Python Download Run Code Output: The string left after the removal of all adjacent duplicates is AB Check if Word Can Be Placed In Crossword, 2019. Minimum Insertions to Balance a Parentheses String, 1546. Step-By-Step Directions From a Binary Tree Node to Another, 2098. You can modify a list you're iterating over if you use indices explicitly: It doesn't work with iterators because iterators don't "know" how to modify the index when you remove arbitrary elements, so it's easier to just forbid it. Reverse Nodes in Even Length Groups, 2077. Words Within Two Edits of Dictionary, 2455. Why would power be reflected to a transmitter when the antenna port is open, or a higher impedance antenna connected? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Count Ways to Group Overlapping Ranges, 2581. Primary Department for Each Employee, 1790. While we put one element into the stack, we check the top of the stack, if it is equal. Most Visited Sector in a Circular Track, 1561. Minimum Garden Perimeter to Collect Enough Apples, 1955. How to handle BatchNorm in the last layers of a deep learning model? Splitting a String Into Descending Consecutive Values, 1850. Find Servers That Handled Most Number of Requests, 1608. Check Distances Between Same Letters, 2400. Airplane Seat Assignment Probability, 1228. Minimum Cost to Separate Sentence Into Rows, 2056. To learn more, see our tips on writing great answers. Percentage of Users Attended a Contest, 1634. Minimum Cost of a Path With Special Roads, 2663. Shortest Distance from All Buildings, 323. Partition Array Into Three Parts With Equal Sum, 1016. The Score of Students Solving Math Expression, 2020. Maximum Product of the Length of Two Palindromic Subsequences, 2003. Minimum Number of K Consecutive Bit Flips, 1003. Difference of Number of Distinct Values on Diagonals, 2712. The result of this move is that the string is . Return the final string after all such duplicate removals have been made. We repeatedly make duplicate removals on S until we no longer can. Number of Adjacent Elements With the Same Color, 2673. Maximum Profit of Operating a Centennial Wheel, 1601. thank you! Remove Digit From Number to Maximize Result, 2260. Remove Letter To Equalize Frequency, 2426. Maximum Score After Splitting a String, 1423. Minimum Length of String After Deleting Similar Ends, 1751. Minimum Difference in Sums After Removal of Elements, 2164. Maximum Running Time of N Computers, 2142. Check if One String Swap Can Make Strings Equal, 1794. 1 I need to write a function called removeDuplicate (string) with only the string as the parameter. Sort Items by Groups Respecting Dependencies, 1209. Does the ratio of 14C in the atmosphere show that global warming is not due to fossil fuels? The Time When the Network Becomes Idle, 2040. Maximum Number of People That Can Be Caught in Tag, 1996. How is Canadian capital gains tax calculated when I trade exclusively in USD? Minimum Obstacle Removal to Reach Corner, 2292. Longest ZigZag Path in a Binary Tree, 1374. Decrypt String from Alphabet to Integer Mapping, 1312. Binary Tree Longest Consecutive Sequence, 302. Construct the Lexicographically Largest Valid Sequence, 1719. Average Height of Buildings in Each Segment, 2016. What you are looking for is the function unique_justseen: Well, katrielalex is right about itertools, but the OP seems to be rather more interested (or should be!) Smallest Value of the Rearranged Number, 2167. Customer Placing the Largest Number of Orders, 597. Why isnt it obvious that the grammars of natural languages cannot be context-free? Check If Two String Arrays are Equivalent, 1663. Search in a Sorted Array of Unknown Size, 708. Minimum Number of Taps to Open to Water a Garden, 1327. Flip Binary Tree To Match Preorder Traversal, 982. All Paths from Source Lead to Destination, 1061. Are you sure you want to create this branch? Minimum Degree of a Connected Trio in a Graph, 1764. Can we please see your attempt at solving the problem, thank you. Make Costs of Paths Equal in a Binary Tree, 2682. Merge Two 2D Arrays by Summing Values, 2571. Number of Unequal Triplets in Array, 2476. Categorize Box According to Criteria, 2526. Tiling a Rectangle with the Fewest Squares, 1247. It is guaranteed that the answer is unique. Smallest Subsequence of Distinct Characters, 1085. Find Score of an Array After Marking All Elements, 2598. How do I split a list into equally-sized chunks? Maximum XOR of Two Non-Overlapping Subtrees, 2482. Does the word "man" mean "a male friend"? Find centralized, trusted content and collaborate around the technologies you use most. Count Number of Maximum Bitwise-OR Subsets, 2045. Run a 'for-loop' that checks if a given element of nums is the same as the previous element. Delete all adjacent duplicates in the string, Programmer Sought, the best programmer technical posts sharing site. Note 1 <= S.length <= 20000 S consists only of English lowercase letters. Intervals Between Identical Elements, 2123. Refer to the Sample Programs for removing all adjacent duplicates from a string and the function used for doing so. Find Positive Integer Solution for a Given Equation, 1238. Max Dot Product of Two Subsequences, 1460. Find the Kth Smallest Sum of a Matrix With Sorted Rows, 1441. Substring with Concatenation of All Words, 34. Maximum Number of Non-overlapping Palindrome Substrings, 2474. Number of Ways to Divide a Long Corridor, 2148. Longest Subsequence With Limited Sum, 2391. Maximum Cost of Trip With K Highways, 2249. You have to refer explicitly to the original list, using e.g. Longest Substring of One Repeating Character, 2216. Smallest String With A Given Numeric Value, 1665. It also has to be recursive. Minimum Number of Operations to Convert Time, 2225. All Divisions With the Highest Score of a Binary Array, 2156. As usual, I am just here to advertise the impressive recipes in the Python itertools documentation. Average Salary Excluding the Minimum and Maximum Salary, 1493. Leftmost Column with at Least a One, 1430. Remove All Adjacent Duplicates In String. Why is it 'A long history' when 'history' is uncountable? Most Stones Removed with Same Row or Column, 952. We can put all the characters one by one into the stack. Only way of explaining why, I tried regular expressions, re.sub(r'(\w)\1{1,}', r'\1', st), this working perfectly fine in removing one adjacent repeated letter, exactly same as the result from the answer provided by hoffee down here. Find a Corresponding Node of a Binary Tree in a Clone of That Tree, 1381. Minimum Possible Integer After at Most K Adjacent Swaps On Digits, 1509. Last Moment Before All Ants Fall Out of a Plank, 1505. Populating Next Right Pointers in Each Node, 117. 1744. How to ensure two-factor availability when traveling? Python - Ways to remove duplicates from list, Print all distinct permutations of a given string with duplicates in C++, Define an array st, and initialize i := 0, if st has some element, and last element of st = st[i], then increase i by 1, and delete last element from st, otherwise add string[i] into st, increase i by 1, finally join all elements in st as a string and return. Find centralized, trusted content and collaborate around the technologies you use most. Minimum Moves to Reach Target Score, 2141. Minimum Adjacent Swaps to Reach the Kth Smallest Number, 1851. Pairs of Songs With Total Durations Divisible by 60, 1011. Longest Substring Of All Vowels in Order, 1846. Check if All A's Appears Before All B's, 2127. Remove All Adjacent Duplicates In String - LeetCode Solutions LeetCode Solutions Home Preface Style Guide Problems Problems 1. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Find Closest Node to Given Two Nodes, 2366. Online Majority Element In Subarray, 1160. @katrielalex: All I'm hoping is that object() instances continue to be "featureless" ;-) Check out the results of, when iterating over a copy, am I not modifying the. Swap For Longest Repeated Character Substring, 1157. Check If a Number Is Majority Element in a Sorted Array, 1151. Ways to Split Array Into Three Subarrays, 1713. Distance to a Cycle in Undirected Graph, 2205. Minimum Moves to Equal Array Elements II, 467. Remove Stones to Minimize the Total, 1963. The aim is to loop through the string, comparing each character to the one before it. Find the Student that Will Replace the Chalk, 1896. Remove One Element to Make the Array Strictly Increasing, 1910. Logical OR of Two Binary Grids Represented as Quad-Trees, 562. Maximize Palindrome Length From Subsequences, 1775. Insert Delete GetRandom O(1) - Duplicates allowed, 395. Satisfiability of Equality Equations, 995. Divide Players Into Teams of Equal Skill, 2492. Longest Substring with At Least K Repeating Characters, 421. Customer Who Visited but Did Not Make Any Transactions, 1582. Count Unique Characters of All Substrings of a Given String, 862. Return the string after all such duplicate removals have been completed. Number of Burgers with No Waste of Ingredients, 1277. remove certain consecutive duplicates in a string? Count the Digits That Divide a Number, 2521. Maximum Difference Between Increasing Elements, 2018. Number of Pairs Satisfying Inequality, 2431. Serialize and Deserialize N-ary Tree, 430. [Leetcode-python-3] 1047. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Python3. Best Time to Buy and Sell Stock with Transaction Fee, 730. Amount of New Area Painted Each Day, 2160. Minimum Difficulty of a Job Schedule, 1339. The Number of Seniors and Juniors to Join the Company, 2005. Number of Ways to Rearrange Sticks With K Sticks Visible, 1867. Delivering Boxes from Storage to Ports, 1689. Users With Two Purchases Within Seven Days, 2230. Find All K-Distant Indices in an Array, 2201. Number Of Ways To Reconstruct A Tree, 1722. Maximum Length of a Concatenated String with Unique Characters, 1240. Non-negative Integers without Consecutive Ones, 602. Minimum String Length After Removing Substrings, 2697. Longest Subarray With Maximum Bitwise AND, 2422. Remove All Adjacent Duplicates In String - Remove All Adjacent Duplicates In String - LeetCode Click "Switch Layout" to move the solution panel right or left. Minimum Increment to Make Array Unique, 947. Can You Eat Your Favorite Candy on Your Favorite Day? Maximize Total Tastiness of Purchased Fruits, 2432. Longest Arithmetic Subsequence of Given Difference, 1227. Coordinate With Maximum Network Quality, 1621. Given a string S of lowercase letters, a duplicate removal consists of choosing two adjacent and equal letters, and removingthem. Check Array Formation Through Concatenation, 1644. Number of Subarrays Having Even Product, 2496. Lowest Common Ancestor of a Binary Tree III, 1653. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. Convert Integer to the Sum of Two No-Zero Integers, 1318. Count Number of Distinct Integers After Reverse Operations, 2446. Intersection of Three Sorted Arrays, 1217. Return the new nums list, with the necessary deletions, up to. If your code font doesn't distinguish between l, I, 1, 0, O, then you need a better font. Minimum Split Into Subarrays With GCD Greater Than One, 2441. Maximum Strictly Increasing Cells in a Matrix, 2715. Remove All Adjacent Duplicates In String | LeetCode Easy | Python Solution | String, Stack Shaheer Shukur 3.84K subscribers Subscribe 0 1 view 3 minutes ago Leetcode easy. Find Minimum Time to Finish All Jobs, 1724. Display Table of Food Orders in a Restaurant, 1420. Minimum Distance to Type a Word Using Two Fingers, 1326. Making statements based on opinion; back them up with references or personal experience. Convert Binary Search Tree to Sorted Doubly Linked List, 428. String Transforms Into Another String, 1155. Minimum Deletions to Make Character Frequencies Unique, 1648. Maximum Length of Subarray With Positive Product, 1568. Capturing number of varying length at the beginning of each line with sed. Number of Unique Subjects Taught by Each Teacher, 2357. To solve this, we will follow these steps , Let us see the following implementation to get better understanding , Enjoy unlimited access on 5500+ Hand Picked Quality Video Courses. Verify Preorder Serialization of a Binary Tree, 340. Smallest K-Length Subsequence With Occurrences of a Letter, 2031. Number of Subarrays With GCD Equal to K, 2449. Lexicographically Smallest Equivalent String, 1072. Eliminate Maximum Number of Monsters, 1928. Number of Ways to Build House of Cards, 2190. If you remove elements from the original list even when iterating over a copy you can make a number of mistakes. Number of Smooth Descent Periods of a Stock, 2111. Number of Valid Move Combinations On Chessboard, 2058. Number of Ways to Build Sturdy Brick Wall, 2186. Is Vivek Ramaswamy right? Number of Ways to Form a Target String Given a Dictionary, 1640. class Solution: def removeDuplicates(self, s: str) -> str: . Minimum Skips to Arrive at Meeting On Time, 1886. Minimum Insertion Steps to Make a String Palindrome, 1315. Verify Preorder Sequence in Binary Search Tree, 297. Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit, 1439. 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Check If String Is a Prefix of Array, 1962. The idea is to recursively remove all adjacent duplicates in the string until no duplicates are left. Number of Distinct Substrings in a String, 1699. Special Positions in a Binary Matrix, 1585. Count Subarrays With More Ones Than Zeros, 2033. The Number of Full Rounds You Have Played, 1906. When coming from functional languages where this sort of thing is done with a fold, then using reduce often feels natural. However, the python documentation warned against modifying elements while iterating a list using the for loop. Maximum of Absolute Value Expression, 1135. Check if All the Integers in a Range Are Covered, 1894. Suppose we have a string S of lowercase letters; a duplicate removal operation will be performed. Minimum Time to Remove All Cars Containing Illegal Goods, 2168. Remove Duplicates from Sorted Array II, 82. Largest Positive Integer That Exists With Its Negative, 2442. Max Sum of Rectangle No Larger Than K, 378. Maximum Distance Between a Pair of Values, 1857. Minimize Result by Adding Parentheses to Expression, 2234. - Katriel Aug 11, 2010 at 15:53 @Aran-Fey IMHO both this question and the duplicate target should be closed as duplicates of Removing elements that have consecutive duplicates - Georgy Jul 15, 2020 at 8:51 Random Point in Non-overlapping Rectangles, 524. Remove All Adjacent Duplicates In String, 3. Decrease Elements To Make Array Zigzag, 1147. (1) Don't use "l" as a variable name; in some fonts it looks too close to "1" (2) Your function returns the original list if its length is less than 2, otherwise it returns. Return the final string after all such duplicate removals have been made. Created using, 1011-capacity-to-ship-packages-within-d-days, 1047-remove-all-adjacent-duplicates-in-string, 105-construct-binary-tree-from-preorder-and-inorder-traversal, 1074-number-of-submatrices-that-sum-to-target, 108-convert-sorted-array-to-binary-search-tree, 116-populating-next-right-pointers-in-each-node, 117-populating-next-right-pointers-in-each-node-ii, 1209-remove-all-adjacent-duplicates-in-string-ii, 1305-all-elements-in-two-binary-search-trees, 1342-number-of-steps-to-reduce-a-number-to-zero, 1354-construct-target-array-with-multiple-sums, 1379-find-a-corresponding-node-of-a-binary-tree-in-a-clone-of-that-tree, 1423-maximum-points-you-can-obtain-from-cards, 1461-check-if-a-string-contains-all-binary-codes-of-size-k, 1465-maximum-area-of-a-piece-of-cake-after-horizontal-and-vertical-cuts, 1491-average-salary-excluding-the-minimum-and-maximum-salary, 1523-count-odd-numbers-in-an-interval-range, 1647-minimum-deletions-to-make-character-frequencies-unique, 1689-partitioning-into-minimum-number-of-deci-binary-numbers, 211-design-add-and-search-words-data-structure, 2138-divide-a-string-into-groups-of-size-k, 2279-maximum-bags-with-full-capacity-of-rocks, 235-lowest-common-ancestor-of-a-binary-search-tree, 236-lowest-common-ancestor-of-a-binary-tree, 297-serialize-and-deserialize-binary-tree, 3-longest-substring-without-repeating-characters, 34-find-first-and-last-position-of-element-in-sorted-array, 421-maximum-xor-of-two-numbers-in-an-array, 452-minimum-number-of-arrows-to-burst-balloons, 462-minimum-moves-to-equal-array-elements-ii, 581-shortest-unsorted-continuous-subarray, 668-kth-smallest-number-in-multiplication-table, 80-remove-duplicates-from-sorted-array-ii, maximum-difference-between-node-and-ancestor, pairs-of-songs-with-total-durations-divisible-by-60, populating-next-right-pointers-in-each-node. 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Amount of Time for Binary Tree to Be Infected, 2388. Most Frequent Number Following Key In an Array, 2192. Second Minimum Node In a Binary Tree, 673. Determine Whether Matrix Can Be Obtained By Rotation, 1887. Actors and Directors Who Cooperated At Least Three Times, 1058. Minimum Cost to Reach Destination in Time, 1930. Minimum Number of Lines to Cover Points, 2153. Abbreviating the Product of a Range, 2120. The posted code could be simplified, by the way (you should however add handling of error conditions): Extremely elegant solution from Google (source is here: https://developers.google.com/edu/python/exercises/basic): You can use list comprehension. Find the Losers of the Circular Game, 2685. Hi there, when i attempted this question I tried to make use of dp. For example something like this should do the job: itertools.groupby is superior, but there is also. Earliest Possible Day of Full Bloom, 2137. Maximum Count of Positive Integer and Negative Integer, 2530. 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Running Total for Different Genders, 1309. Binary Tree Zigzag Level Order Traversal, 105. This looks like removing adjacent substrings aswell? Minimum Operations to Make the Array Increasing, 1828. Next Greater Numerically Balanced Number, 2051. Minimum Swaps To Make Sequences Increasing, 828. Split Array into Consecutive Subsequences, 668. Minimum Cost to Make All Characters Equal, 2713. Convert Binary Number in a Linked List to Integer, 1292. The Number of Employees Which Report to Each Employee, 1735. Prime Number of Set Bits in Binary Representation, 774. Minimum ASCII Delete Sum for Two Strings, 714. Count Ways to Make Array With Product, 1736. Path In Zigzag Labelled Binary Tree, 1111. Minimum Number of Steps to Make Two Strings Anagram, 1351. Find Greatest Common Divisor of Array, 1981. In this series, I am going to solve Leetcode medium problems live with my friends, which you can see on our youtube channel, Today we will do Problem Leetcode: 1047. 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Find the Longest Valid Obstacle Course at Each Position, 1966. Maximum XOR With an Element From Array, 1712. Generate a String With Characters That Have Odd Counts, 1375. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Convert Sorted Array to Binary Search Tree, 109. Find Valid Matrix Given Row and Column Sums, 1606. Find Consecutive Integers from a Data Stream, 2529. @John Machin. Find Substring With Given Hash Value, 2158. Minimum Number of Operations to Make All Array Elements Equal to 1, 2656. I am wondering what else can I try apart from iterating over the list, to get this done. Find Two Non-overlapping Sub-arrays Each With Target Sum, 1481. Minimum Cost to Reach City With Discounts, 2095. Merge Overlapping Events in the Same Hall, 2495. Maximum Candies Allocated to K Children, 2228. Count Strictly Increasing Subarrays, 2398. Split Two Strings to Make Palindrome, 1617. The Employee That Worked on the Longest Task, 2433. Removing Minimum and Maximum From Array, 2093. Accepted Candidates From the Interviews, 2042. Minimum Number of Steps to Make Two Strings Anagram II, 2189. Widest Pair of Indices With Equal Range Sum, 1984. Maximum Number of Events That Can Be Attended II, 1752. But I am looking for one or two adjacent repeated letters. Count Number of Rectangles Containing Each Point, 2259. Lexicographically Smallest String After Substring Operation. It has to remove all adjacent duplicates. Sum of Digits in the Minimum Number, 1100. Find the Smallest Divisor Given a Threshold, 1284. Make the XOR of All Segments Equal to Zero, 1789. Paths in Matrix Whose Sum Is Divisible by K, 2436. But I am looking to remove one and two different adjacent repeated letters. Count Number of Possible Root Nodes, 2584. Find All Possible Recipes from Given Supplies, 2116. Check if Word Equals Summation of Two Words, 1883. Final Prices With a Special Discount in a Shop, 1477. Find Resultant Array After Removing Anagrams, 2274. Largest Number After Digit Swaps by Parity, 2232. Maximum Product of the Length of Two Palindromic Substrings, 1961. Example 1: Input: s = "abbaca" Output: "ca" Explanation: For example, in "abbaca" we could remove "bb" since the letters are adjacent and equal, and this is the only possible move. Stack String Two Pointers Array Recursion Iterator Queue Greedy Monotonic Stack String Matching Math Sliding Window Linked List Simulation Backtracking Sorting Data Stream. Mean of Array After Removing Some Elements, 1620. Find Total Time Spent by Each Employee, 1743. the index of the element. modify the passed in list. Number of Restricted Paths From First to Last Node, 1787. Minimum Time to Visit a Cell In a Grid, 2579. Number of Ways to Reach a Position After Exactly k Steps, 2406. Count Subtrees With Max Distance Between Cities, 1618. It can be proven that the answer is unique.______________________________________________________________ LeetCode problem solving helps in improving one's problem solving and coding skills . Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree, 1431. Kids With the Greatest Number of Candies, 1432. Count Odd Numbers in an Interval Range, 1525. "Murder laws are governed by the states, [not the federal government]." How to keep unique items from a collection of similar items in a list? Minimum Operations to Make Numbers Non-positive, 2710. Longest Common Subsequence Between Sorted Arrays, 1941. Partition Array According to Given Pivot, 2163. Count Words Obtained After Adding a Letter, 2136. Rearrange Characters to Make Target String, 2290. Create Binary Tree From Descriptions, 2197. If you're mounted and forced to make a melee attack, do you attack your mount? Count Ways to Build Rooms in an Ant Colony, 1921. Create Target Array in the Given Order, 1391. Count Triplets That Can Form Two Arrays of Equal XOR, 1443. but it asks to remove only adjacent items, the above code will not let any duplicates in irrespective of their position, so inehrently [1,2,3,2] will produce [1,2,3] whereby it should produce [1,2,3,2], Remove adjacent duplicate elements from a list [duplicate], Removing elements that have consecutive duplicates, https://developers.google.com/edu/python/exercises/basic, How to keep your new tool from gathering dust, Chatting with Apple at WWDC: Macros in Swift and the new visionOS, We are graduating the updated button styling for vote arrows, Statement from SO: June 5, 2023 Moderator Action. The Category of Each Member in the Store, 2052. Find the Longest Semi-Repetitive Substring, 2734.

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