Delete N Nodes After M Nodes of a Linked List, 1475. Maximum Number of Books You Can Take, 2356. #arraylists +91-9879950702 Monday - Friday 10:00 - 7:30 Rakhiyal, Ahmedabad, Gujarat . Whenever a character is already repeated then take that index to our answer. Sort Linked List Already Sorted Using Absolute Values, 2047. MEGA. Minimum Deletions to Make Array Beautiful, 2218. the output remains the same if we change the input string. The Most Recent Orders for Each Product, 1551. Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree, 1431. Number of Unequal Triplets in Array, 2476. Count Zero Request Servers Check if Every Row and Column Contains All Numbers, 2134. String Transforms Into Another String, 1155. You can perform this operation at most k times. Find Smallest Letter Greater Than Target, 747. Minimum Moves to Reach Target Score, 2141. Subtree Removal Game with Fibonacci Tree, 2006. Maximum XOR With an Element From Array, 1712. How Many Numbers Are Smaller Than the Current Number, 1368. Determine if String Halves Are Alike, 1707. @RyanZhang Which is of no practical use anywhere else. Example 1: Input: S = "geeksforgeeks" Output: g Explanation: g, e, k and s are the repeating characters. Minimum Consecutive Cards to Pick Up, 2263. Rearrange Array to Maximize Prefix Score, 2588. Users That Actively Request Confirmation Messages, 1940. #recursion Minimum Initial Energy to Finish Tasks, 1671. Minimum Garden Perimeter to Collect Enough Apples, 1955. Minimum Weighted Subgraph With the Required Paths, 2204. Shortest Subarray to be Removed to Make Array Sorted, 1576. Lowest Common Ancestor of a Binary Tree III, 1653. Lowest Common Ancestor of a Binary Tree IV, 1680. Lowest Common Ancestor of a Binary Search Tree, 236. Form Array by Concatenating Subarrays of Another Array, 1767. Your Task: This is a function problem. --------- Substrings of Size Three with Distinct Characters, 1878. Minimum ASCII Delete Sum for Two Strings, 714. Minimum Deletions to Make String Balanced, 1658. Can You Eat Your Favorite Candy on Your Favorite Day? Add Two Polynomials Represented as Linked Lists, 1637. Frequency of the Most Frequent Element, 1839. Number of Trusted Contacts of a Customer, 1365. . Sign In. My own Amazon, Microsoft and Google SDE Coding challenge Solutions (offered by GeeksForGeeks). Longest Palindrome by Concatenating Two Letter Words, 2133. Problems Courses Job-a-Thon MEGA; Contests. Minimum Cost to Make at Least One Valid Path in a Grid, 1369. Minimum Score After Removals on a Tree, 2323. Design a Stack With Increment Operation, 1385. Index of Leftmost Repeating Character | thiscodeWorks Circular Permutation in Binary Representation, 1239. Given a string consisting of lowercase english alphabets. Remove Trailing Zeros From a String, 2711. We keep track of the leftmost index of every character. Maximum Enemy Forts That Can Be Captured, 2515. Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit, 1439. POTD. #geeksforgeeks Problem Statement: Given a string, find the leftmost repeating character of the string. Smallest Rectangle Enclosing Black Pixels, 309. Drop Type 1 Orders for Customers With Type 0 Orders, 2085. Capacity To Ship Packages Within D Days, 1013. Count Unique Characters of All Substrings of a Given String, 862. Determine if Two Events Have Conflict, 2447. Minimize Result by Adding Parentheses to Expression, 2234. Check if an Original String Exists Given Two Encoded Strings, 2061. Count the Digits That Divide a Number, 2521. Minimum Number of Increments on Subarrays to Form a Target Array, 1533. Else, repeat the steps 1st and 2nd until the whole string is traversed or until we got out an answer. Temporary policy: Generative AI (e.g., ChatGPT) is banned. You are given a string s and an integer k. You can choose any character of the string and change it to any other uppercase English character. Maximum Points You Can Obtain from Cards, 1428. Find Original Array From Doubled Array, 2009. #interviewquestions The Employee That Worked on the Longest Task, 2433. Find Total Time Spent by Each Employee, 1743. The idea is to keep track of first occurrence of every character and whenever a character repeats check whether it is first repeated character or not. If no repeating character is found, return -1 to indicate that all characters in the string are distinct. Output: Maximum Candies You Can Get from Boxes, 1299. Number of Increasing Paths in a Grid, 2334. Maximum Difference Between Node and Ancestor, 1028. If the current character matches with any of the further characters present in the string then immediately return / Print that character. Count the Number of Consistent Strings, 1685. How can it be "unfortunate" while this is what the experiments want? Count Hills and Valleys in an Array, 2212. Convert Sorted List to Binary Search Tree, 116. Smallest Subarrays With Maximum Bitwise OR, 2412. Make the XOR of All Segments Equal to Zero, 1789. Find the Maximum Number of Marked Indices, 2577. Maximum Score from Performing Multiplication Operations, 1771. If the character repeats, then if the index where it repeated is less than the index of the previously repeated character then store this character and its index where it repeated. Frequencies of Limited Range Array Elements, How to efficiently iterate over each entry in a Java Map, How do you check a row in a 2D char array for a specific element and then count how many of that element are in the row? Find the Index of the First Occurrence in a String, 30. Check for Contradictions in Equations, 2309. #limitedrange, #java Minimum Operations to Reduce X to Zero, 1661. Your Task: This is a function problem. Minimum Moves to Move a Box to Their Target Location, 1265. Sort Items by Groups Respecting Dependencies, 1209. The Number of Users That Are Eligible for Discount, 2207. We solved the problem using two methods: 1)naive 2)efficient(arr. https://youtube.com/playlist?list=PL1MJrDFRFiKZYea2EAfuNJ9aosbpIlAf5 Code: https://github.com/Eric-programming/CodeSolution/tree/master/src/SlidingWindow/LongestRepeatingCharacterReplacement You will be notified via email once the article is available for improvement. Longest Substring Without Repeating Characters Medium 35.3K 1.6K Companies Given a string s, find the length of the longest substring without repeating characters. Number of Longest Increasing Subsequence, 674. Reorder Routes to Make All Paths Lead to the City Zero, 1467. Maximum Number of Coins You Can Get, 1565. Check if All the Integers in a Range Are Covered, 1894. Count Lattice Points Inside a Circle, 2250. The Category of Each Member in the Store, 2052. Resembling Max Consecutive Ones III, but requires hash to keep traversed char and its occurring times in the substring. Count Number of Ways to Place Houses, 2322. Average Time of Process per Machine, 1662. Smallest Rotation with Highest Score, 801. Maximum Profit of Operating a Centennial Wheel, 1601. Remove Duplicates from Sorted List II, 103. The brute force approach to solve this problem is to consider each character in the string and then check whether it appears again in the remaining part of the string. Find N Unique Integers Sum up to Zero, 1305. Alert Using Same Key-Card Three or More Times in a One Hour Period, 1605. Binary String With Substrings Representing 1 To N, 1026. Lexicographically Smallest Palindrome, 2698. (Java), Finding all classes implementing a specific interface, Intent to Start New Activity in Android Studio, Storing data in SQLite Database in android, Application of Kruskal's algorithm in Java. Percentage of Users Attended a Contest, 1634. Find Words That Can Be Formed by Characters, 1163. You can perform this operation at most k times. Count Subtrees With Max Distance Between Cities, 1618. This help support the channel and allows us to continue to make videos like this. For each character, iterate through the remaining characters in the string to check if there is a repeating character. The left is not modified until k is used up for replacing chars different than current most common. c++ - I need help finding why is this code for leftmost non-repeating [Leetcode] Longest Repeating Character Replacement - Medium Decremental String Concatenation 2747. Find The Original Array of Prefix Xor, 2434. How terrifying is giving a conference talk? Build Array Where You Can Find The Maximum Exactly K Comparisons, 1422. Maximum Sum Obtained of Any Permutation, 1593. Construct Binary Search Tree from Preorder Traversal, 1010. Longest Subsequence With Limited Sum, 2391. GitHub Minimize the Difference Between Target and Chosen Elements, 1983. Decrypt String from Alphabet to Integer Mapping, 1312. We keep track of the visited characters. Remove All Adjacent Duplicates In String, 1050. Count Number of Distinct Integers After Reverse Operations, 2446. Remove Duplicates From an Unsorted Linked List, 1838. This . Minimum Interval to Include Each Query, 1855. Lexicographically Smallest Beautiful String, 2669. Running Total for Different Genders, 1309. Smallest Missing Non-negative Integer After Operations, 2602. All Elements in Two Binary Search Trees, 1308. Count Substrings That Differ by One Character, 1639. BiWizard School Contest. Maximum XOR of Two Numbers in an Array, 426. Categorize Box According to Criteria, 2526. Largest Component Size by Common Factor, 967. Minimum Money Required Before Transactions, 2414. User Activity for the Past 30 Days I, 1142. Lexicographically Smallest String After Substring Operation, 2743. Max Difference You Can Get From Changing an Integer, 1433. Longest Subarray of 1's After Deleting One Element, 1495. By using our site, you Build Binary Expression Tree From Infix Expression, 1599. Satisfiability of Equality Equations, 995. Number of Subarrays With GCD Equal to K, 2449. Why should I not #include ? acknowledge that you have read and understood our. Count Different Palindromic Subsequences, 744. Determine the Winner of a Bowling Game, 2661. //]]>. Maximum Alternating Subsequence Sum, 1913. Largest Number After Mutating Substring, 1950. First and Last Call On the Same Day, 1973. #lecture #practice You only need to complete the function repeatedCharacter () that takes a string as a parameter and returns the index of the character. Minimum Insertions to Balance a Parentheses String, 1546. Maximum Number of Consecutive Values You Can Make, 1802. Friend Requests II: Who Has the Most Friends, 615. Maximize Number of Subsequences in a String, 2208. Remove Digit From Number to Maximize Result, 2260. With the reference to the above image, we can see the character a is the left-most repeating element and the character r is the second left-most repeating character. Minimum Addition to Make Integer Beautiful, 2458. #java Minimum Number of Operations to Make Arrays Similar, 2450. This is the code for leftmost non-repeating char in a string which is not giving correct output. Actually, we consume k on both left and right side. Partition Array Such That Maximum Difference Is K, 2300. Return the length of the longest substring containing the same letter you can get after performing the above operations. Check If Word Is Valid After Substitutions, 1005. Maximum Number of Achievable Transfer Requests, 1602. Customers with Maximum Number of Transactions on Consecutive Days, 2753. Longest Substring Without Repeating Characters, 17. Maximum Product of the Length of Two Palindromic Subsequences, 2003. Probability of a Two Boxes Having The Same Number of Distinct Balls, 1474. Why is "using namespace std;" considered bad practice? Problems Courses Sale Geek-O-Lympics; Events. Online Majority Element In Subarray, 1160. The Number of Weak Characters in the Game, 1997. Maximal Score After Applying K Operations, 2531. Minimum Swaps to Make Strings Equal, 1249. Find the Start and End Number of Continuous Ranges, 1287. Number of Valid Move Combinations On Chessboard, 2058. Sum of Mutated Array Closest to Target, 1304. #java, #android #index, Input : str = "geeksforgeeks" Find Numbers with Even Number of Digits, 1296. Condition for an equivalence of functor categories to imply an equivalence of categories. Prime Number of Set Bits in Binary Representation, 774. Count Number of Rectangles Containing Each Point, 2259. In this video, youll also learn about asymptotic notations, they are basically mathematical notations which represent order of growth of any mathematical function. Count Ways to Make Array With Product, 1736. Letter Combinations of a Phone Number, 28. Sign In. In this video, we are going to look at a basic string problem: leftmost repeating character. Create Binary Tree From Descriptions, 2197. Employees Whose Manager Left the Company, 1979. Find the Prefix Common Array of Two Arrays, 2660. Get the Second Most Recent Activity, 1371. Number of Valid Words in a Sentence, 2048. Create Sorted Array through Instructions, 1650. Leftmost Column with at Least a One, 1430. #limitedrange, #java #geeksforgeeks Design Graph With Shortest Path Calculator, 2644. The Number of Passengers in Each Bus I, 2143. Checking Existence of Edge Length Limited Paths II, 1725. Minimum Operations to Make a Subsequence, 1714. Minimum Difficulty of a Job Schedule, 1339. Customers With Strictly Increasing Purchases, 2475. Why is the Work on a Spring Independent of Applied Force? Numbers With Same Consecutive Differences, 971. Check if All A's Appears Before All B's, 2127. Partition Array Into Three Parts With Equal Sum, 1016. Number Of Ways To Reconstruct A Tree, 1722. Swap For Longest Repeated Character Substring, 1157. Smallest K-Length Subsequence With Occurrences of a Letter, 2031. Minimum Operations to Remove Adjacent Ones in Matrix, 2124. Minimum Number of Swaps to Make the String Balanced, 1964. Update the result if the result is greater. If a character repeats, we update the result. Example 2: We keep track of the leftmost index of every character. Maximum Score Words Formed by Letters, 1261. A template could be helpful when meeting similar questions. Find Players With Zero or One Losses, 2226. Find the Score of All Prefixes of an Array, 2642. Number of Subsequences That Satisfy the Given Sum Condition, 1502. 589). Sum Of Special Evenly-Spaced Elements In Array, 1717. Minimum Number of Operations to Move All Balls to Each Box, 1770. Maximum Element After Decreasing and Rearranging, 1848. Minimum Operations to Make Numbers Non-positive, 2710. Minimum Cost to Reach City With Discounts, 2095. Job-a-Thon. Non Repeating Character | Practice | GeeksforGeeks #gfg #howto Sort Even and Odd Indices Independently, 2165. If it does, then we have found the first repeating character. Latest Time by Replacing Hidden Digits, 1737. Special thanks toAbhishek Yadavfor contributing to this article on takeUforward. Minimized Maximum of Products Distributed to Any Store, 2068. Longest Common Subsequence Between Sorted Arrays, 1941. Smallest Range Covering Elements from K Lists, 659. Remove One Element to Make the Array Strictly Increasing, 1910. #xml, open_in_newInstructions on embedding in Medium, Check if a String is Subsequence of Other, Improved Naive Pattern Searching for Distinct, KMP Agorithm (Part 1 : Constructing LPS Array), KMP Agorithm (Part 2 : Complete Algorithm), Longest Substring with Distinct Characters. Maximum Count of Positive Integer and Negative Integer, 2530. Paths in Maze That Lead to Same Room, 2078. Find the Losers of the Circular Game, 2685. Denys Fisher, of Spirograph fame, using a computer late 1976, early 1977. lebron james dunking drawing easy; persuasive essay university. Find the Divisibility Array of a String, 2576. Partition String Into Substrings With Values at Most K, 2524. Number of Ways to Divide a Long Corridor, 2148. ref: https://blog.csdn.net/fuxuemingzhu/article/details/79527303, Jotting the ideas down in codes or articles, https://blog.csdn.net/fuxuemingzhu/article/details/79527303. Minimum Swaps to Group All 1's Together II, 2135. Find a Corresponding Node of a Binary Tree in a Clone of That Tree, 1381. Remove Colored Pieces if Both Neighbors are the Same Color, 2039. It is giving output '1' while the expected output is 'f'. Minimum Value to Get Positive Step by Step Sum, 1414. Maximum Number of Non-Overlapping Subarrays With Sum Equals Target, 1549. 423. Final Value of Variable After Performing Operations, 2014. Queue based approach for first non-repeating character in a stream Shortest Subarray with Sum at Least K, 865. Does Iowa have more farmland suitable for growing corn and wheat than Canada? Print Immutable Linked List in Reverse, 1269. Steps that were to follow the above approach: Below is the code to implement the above steps: Time Complexity: O(N^2)Auxiliary Space: O(1). Substrings That Begin and End With the Same Letter, 2084. Count Number of Pairs With Absolute Difference K, 2007. Number of Distinct Binary Strings After Applying Operations, 2452. Binary Tree Zigzag Level Order Traversal, 105. Find the Longest Balanced Substring of a Binary String, 2610. baggallini modern pocket crossbody Find Minimum in Rotated Sorted Array II, 158. Minimum Cost to Make All Characters Equal, 2713. Thank you for your valuable feedback! The Number of the Smallest Unoccupied Chair, 1944. Form Largest Integer With Digits That Add up to Target, 1450. #java, #android Construct Binary Tree from Inorder and Postorder Traversal, 107. Count Houses in a Circular Street II, 2760. Minimum Cost to Separate Sentence Into Rows, 2056. Array With Elements Not Equal to Average of Neighbors, 1969. Reverse Substrings Between Each Pair of Parentheses, 1196. How can I manually (on paper) calculate a Bitcoin public key from a private key? Maximize Sum Of Array After K Negations, 1007. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Find Cumulative Salary of an Employee, 581. Pairs of Songs With Total Durations Divisible by 60, 1011. the output remains the same if we change the input string. Given a string S consisting of lowercase Latin Letters. Consecutive Transactions with Increasing Amounts, 2702. Delivering Boxes from Storage to Ports, 1689. Number of Pairs of Interchangeable Rectangles, 2002. Partition String Into Minimum Beautiful Substrings, 2770. Minimum Score by Changing Two Elements, 2570. Painting a Grid With Three Different Colors, 1933. Job-a-Thon. Find a Value of a Mysterious Function Closest to Target, 1523. Minimum Score of a Path Between Two Cities, 2493. Count Ways to Group Overlapping Ranges, 2581. Earliest Possible Day of Full Bloom, 2137. {"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":"Anagram_check.cpp","path":"Anagram_check.cpp","contentType":"file"},{"name":"BFSconnected . Generate a String With Characters That Have Odd Counts, 1375. #rope cutting, #java Minimum Operations to Reduce an Integer to 0, 2572. leftmost repeating character gfg practice Minimum Operations to Make the Array Increasing, 1828. Smallest Value After Replacing With Sum of Prime Factors, 2508. Find Minimum Time to Finish All Jobs II, 2328. Find Minimum in Rotated Sorted Array, 154. Remove All Occurrences of a Substring, 1911. Traversing string one timeAuxiliary Space: O(1). Primary Department for Each Employee, 1790. Words Within Two Edits of Dictionary, 2455. . Count Ways to Build Rooms in an Ant Colony, 1921. Maximum Value of K Coins From Piles, 2220. Maximum Sum of 3 Non-Overlapping Subarrays, 702. Decrease Elements To Make Array Zigzag, 1147. Minimum Increment to Make Array Unique, 947. Insert into a Sorted Circular Linked List, 712. Customers Who Bought Products A and B but Not C, 1403. Find first repeated character | Practice | GeeksforGeeks The Score of Students Solving Math Expression, 2020. All the Pairs With the Maximum Number of Common Followers, 1953. Binary Searchable Numbers in an Unsorted Array, 1967. Minimum Possible Integer After at Most K Adjacent Swaps On Digits, 1509. Maximum Sum of Two Non-Overlapping Subarrays, 1038. Max Sum of Rectangle No Larger Than K, 378. Maximum Sum of Distinct Subarrays With Length K, 2470. Eliminate Maximum Number of Monsters, 1928. The Number of Full Rounds You Have Played, 1906. You need to print the repeated character whose first appearance is leftmost. Minimum Number of Operations to Make String Sorted, 1835. Expected Time Complexity: O(N) Expected Auxiliary Space: O(Number of distinct characters). A game changer is arriving on 22nd July - 10 AM !! i.e The first character that does not appear again in the further string. Minimum Split Into Subarrays With GCD Greater Than One, 2441. Minimum Cost to Move Chips to The Same Position, 1218. #while-loops Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree, 1491. Count the Number of Vowel Strings in Range, 2587. Redistribute Characters to Make All Strings Equal, 1898. Minimum Operations to Make All Array Elements Equal, 2605. Make Costs of Paths Equal in a Binary Tree, 2682. Maximum White Tiles Covered by a Carpet, 2273. Minimum Bit Flips to Convert Number, 2224. Traverse string from left to right and If a character repeats, compare its leftmost index with the current result. Count Unreachable Pairs of Nodes in an Undirected Graph, 2320. Minimum Amount of Time to Collect Garbage, 2393. Construct Target Array With Multiple Sums, 1356. Binary Search Tree to Greater Sum Tree, 1039. Minimum Swaps to Group All 1's Together, 1153. Count Equal and Divisible Pairs in an Array, 2177. Accepted Candidates From the Interviews, 2042. Your Task: You don't need to read or print anything. Minimum Distance to the Target Element, 1849. Leftmost Repeating Character in a String | Repeating Character - First Minimum Fuel Cost to Report to the Capital, 2479. You can perform this operation at most. Minimum Recolors to Get K Consecutive Black Blocks, 2380. Number of Substrings Containing All Three Characters, 1359. Substring with Concatenation of All Words, 34. Platform to practice programming problems. Check If a Word Occurs As a Prefix of Any Word in a Sentence, 1456. Make Number of Distinct Characters Equal, 2535. Equal Sum Arrays With Minimum Number of Operations, 1779. Minimum Number of Lines to Cover Points, 2153. Replace the Substring for Balanced String, 1237. The Time When the Network Becomes Idle, 2040. GFG Weekly Coding Contest. Apply Operations to Make All Array Elements Equal to Zero, 2776. The Most Frequently Ordered Products for Each Customer, 1597. Remove Letter To Equalize Frequency, 2426. Widest Pair of Indices With Equal Range Sum, 1984. Count Total Number of Colored Cells, 2580. Number of Different Subsequences GCDs, 1820. Find Two Non-overlapping Sub-arrays Each With Target Sum, 1481. Apply Transform Over Each Element in Array, 2639. #search, #java Maximum Side Length of a Square with Sum Less than or Equal to Threshold, 1293. Path In Zigzag Labelled Binary Tree, 1111. Search in a Sorted Array of Unknown Size, 708. #mobile, #java Vertical Order Traversal of a Binary Tree, 990. Find First and Last Position of Element in Sorted Array, 80. List the Products Ordered in a Period, 1330. Minimize Max Distance to Gas Station, 793. All Contest and Events. #java Products With Three or More Orders in Two Consecutive Years, 2294. Create Target Array in the Given Order, 1391. Display Table of Food Orders in a Restaurant, 1420. Minimum One Bit Operations to Make Integers Zero, 1612. Find Servers That Handled Most Number of Requests, 1608. The Earliest and Latest Rounds Where Players Compete, 1904. Find All K-Distant Indices in an Array, 2201. Replace the one 'A' in the middle with 'B' and form . This article is being improved by another user right now. Maximum Nesting Depth of the Parentheses, 1616. Missing Number In Arithmetic Progression, 1233. Sum of Imbalance Numbers of All Subarrays, 2764. is Array a Preorder of Some Binary Tree, 2767. 1746. Longest Substring with At Most Two Distinct Characters, 181. Unique Substrings With Equal Digit Frequency, 2170. What is a debugger and how can it help me diagnose problems? Examples: Example 1: Input: takeUforward Output: t Explanation: Character 't' is the left-most non-repeating character or the first non-repeating character. Optimize Water Distribution in a Village, 1170. Minimize the Total Price of the Trips, 2654. Count All Valid Pickup and Delivery Options, 1364. Minimum Number of Moves to Seat Everyone, 2038. LeetCode 424 Longest Repeating Character Replacement - Medium Index of leftmost repeating character: User Activity for the Past 30 Days II, 1144. Special thanks toAbhishek Yadavfor contributing to this article on takeUforward. Find the Longest Valid Obstacle Course at Each Position, 1966. Construct the Longest New String 2746. Largest Combination With Bitwise AND Greater Than Zero, 2279. The Users That Are Eligible for Discount, 2231. 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