Maximum Number of Coins You Can Get, 1565. Maximum Candies Allocated to K Children, 2228. Minimum Number of Operations to Reinitialize a Permutation, 1807. #index All Contest and Events. Intervals Between Identical Elements, 2123. We solved the problem using two methods: 1)naive 2)efficient(array storing method)Method 1 (Traversing from Left to Right) We traverse the string from left to right. My own Amazon, Microsoft and Google SDE Coding challenge Solutions (offered by GeeksForGeeks). Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree, 1491. Remove All Ones With Row and Column Flips, 2131. Number of Good Ways to Split a String, 1526. You need to print the repeated character whose first appearance is leftmost. Maximum Non Negative Product in a Matrix, 1595. In the above approach though the time complexity is O(N), But we traversed the string two times so it took more time, Now lets optimize it to get out output in a single traversal. Insert into a Sorted Circular Linked List, 712. Find the Smallest Divisor Given a Threshold, If the current character does not match with any of the further characters in the string then immediately. Check if All Characters Have Equal Number of Occurrences, 1942. Number of People That Can Be Seen in a Grid, 2283. Longest ZigZag Path in a Binary Tree, 1374. Examples: Example 1: Input: takeUforward Output: t Explanation: Character 't' is the left-most non-repeating character or the first non-repeating character. All People Report to the Given Manager, 1276. Delete N Nodes After M Nodes of a Linked List, 1475. Smallest String With A Given Numeric Value, 1665. Check If String Is a Prefix of Array, 1962. Customers Who Bought Products A and B but Not C, 1403. Minimum Operations to Reduce an Integer to 0, 2572. Minimum Operations to Make the Array Increasing, 1828. Form Smallest Number From Two Digit Arrays, 2606. Check If a Word Occurs As a Prefix of Any Word in a Sentence, 1456. Divide a String Into Groups of Size k, 2139. Count Zero Request Servers Why is that so many apps today require a MacBook with an M1 chip? In this video, I'm going to show you how to solve Longest Repeating Character Replacement which is related to [category].In fact, I also have a whole section. Count Lattice Points Inside a Circle, 2250. Leftmost Column with at Least a One 1429. Shortest Subarray with Sum at Least K, 865. Count All Valid Pickup and Delivery Options, 1364. Given two strings s and part, perform the following operation on s until all occurrences of the substring part are removed: Find the leftmost occurrence of the substring part and remove it from s. Return s after removing all occurrences of part. #lecture Number of Accounts That Did Not Stream, 2023. Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold, 1347. A substring is a contiguous sequence of characters in a string. Output: First non-repeating character is t. Reason: 256 is a constant so Space complexity is O(1). Why is char[] preferred over String for passwords? Find the Longest Semi-Repetitive Substring, 2734. Intersection of Three Sorted Arrays, 1217. Lowest Common Ancestor of a Binary Tree II, 1647. What you need to do is block GeeksForGeeks in your browser, and never go there again. Number of Ways to Build Sturdy Brick Wall, 2186. Split Two Strings to Make Palindrome, 1617. Final Value of Variable After Performing Operations, 2014. Keep Multiplying Found Values by Two, 2155. Lexicographically Smallest String After Substring Operation, 2743. Find Cumulative Salary of an Employee, 581. Time Needed to Rearrange a Binary String, 2383. In last print that stored character. Number of Different Integers in a String, 1806. 423. Minimum Fuel Cost to Report to the Capital, 2479. A game changer is arriving on 22nd July - 10 AM !! Customers with Maximum Number of Transactions on Consecutive Days, 2753. 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Number of Ways to Divide a Long Corridor, 2148. Return any one of. Sign In. Prime Number of Set Bits in Binary Representation, 774. Find the Most Competitive Subsequence, 1674. Then loop through the string character by character and check if the frequency array element with this character has its index as -1 or not. This video Will explain What is data?, What is data structure?, The Need for Data Structures, What is algorithm? Widest Pair of Indices With Equal Range Sum, 1984. Difference Between Element Sum and Digit Sum of an Array, 2538. Longest Substring with At Most K Distinct Characters, 363. Find centralized, trusted content and collaborate around the technologies you use most. Choose Edges to Maximize Score in a Tree, 2379. Build Binary Expression Tree From Infix Expression, 1599. Remove Trailing Zeros From a String, 2711. Remove Duplicates From an Unsorted Linked List, 1838. #equala, #java Find Words That Can Be Formed by Characters, 1163. 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. Populating Next Right Pointers in Each Node II, 153. What is the relational antonym of 'avatar'? All the Pairs With the Maximum Number of Common Followers, 1953. Flip Binary Tree To Match Preorder Traversal, 982. Shortest Path with Alternating Colors, 1131. Delete Characters to Make Fancy String, 1959. Concatenate the Name and the Profession, 2507. Check Array Formation Through Concatenation, 1644. Maximize the Topmost Element After K Moves, 2203. Check if All A's Appears Before All B's, 2127. Your task is to complete the function FirstNonRepeating () which takes A as input parameter and returns a string after processing the input stream. Minimum Difference in Sums After Removal of Elements, 2164. Smallest Subarrays With Maximum Bitwise OR, 2412. #arrays Longest Binary Subsequence Less Than or Equal to K, 2313. Find Valid Matrix Given Row and Column Sums, 1606. Longest Chunked Palindrome Decomposition, 1150. Check If Array Pairs Are Divisible by k, 1498. Find the Smallest Divisor Given a Threshold, If the current character matches with any of the further characters present in the string then immediately, Else, if all the characters are traversed or the string is empty then, We will create a frequency array of size 256. Users That Actively Request Confirmation Messages, 1940. Rearrange Array to Maximize Prefix Score, 2588. Determine the Winner of a Bowling Game, 2661. Product of Two Run-Length Encoded Arrays, 1869. Longest Subarray With Maximum Bitwise AND, 2422. Step-By-Step Directions From a Binary Tree Node to Another, 2098. Can Make Arithmetic Progression From Sequence, 1503. Maximum XOR With an Element From Array, 1712. We keep track of the leftmost index of every character. Maximum Number of Points From Grid Queries, 2504. Distribute Money to Maximum Children, 2593. Number of Spaces Cleaning Robot Cleaned, 2064. Find Minimum in Rotated Sorted Array, 154. #practice Number of Adjacent Elements With the Same Color, 2673. Minimum Number of Work Sessions to Finish the Tasks, 1989. A template could be helpful when meeting similar questions. Maximum Frequency Score of a Subarray, 2525. Minimum Cost to Connect Two Groups of Points, 1596. Unique Length-3 Palindromic Subsequences, 1931. Letter Combinations of a Phone Number, 28. 1746. Example 2: Maximum Strictly Increasing Cells in a Matrix, 2715. Divide Array Into Increasing Sequences, 1123. Minimum Flips to Make a OR b Equal to c, 1319. #rope cutting, #java Maximum Product of Splitted Binary Tree, 1342. Check if an Original String Exists Given Two Encoded Strings, 2061. Maximum Distance Between a Pair of Values, 1857. Find the Losers of the Circular Game, 2685. Populating Next Right Pointers in Each Node, 117. Second Minimum Node In a Binary Tree, 673. Maximum Subarray Sum with One Deletion, 1190. If no character repeats then return -1. How to insert ArrayList into While-condition? You only need to complete the function repeatedCharacter() that takes a string as a parameter and returns the index of the character. Frequency of the Most Frequent Element, 1839. #geeksforgeeks #string Earliest Possible Day of Full Bloom, 2137. Number of Increasing Paths in a Grid, 2334. Count Substrings Without Repeating Character, 2744. We will initialize all the elements in this array to -1. Find the Winner of the Circular Game, 1827. #gfg Count Strictly Increasing Subarrays, 2398. Minimum Length of String After Deleting Similar Ends, 1751. Maximum Points You Can Obtain from Cards, 1428. Find Smallest Letter Greater Than Target, 747. Find N Unique Integers Sum up to Zero, 1305. Count Artifacts That Can Be Extracted, 2202. Find K-Length Substrings With No Repeated Characters, 1101. #interviewquestions Maximum Difference by Remapping a Digit, 2567. Number Of Ways To Reconstruct A Tree, 1722. #search, #java Find the Longest Balanced Substring of a Binary String, 2610. Maximum Score Words Formed by Letters, 1261. There are three famous notations which youll see in this video, they are big O , Theta , Omega.Welcome to the first video Tutorial on Data Structures And Algorithms. Choose Numbers From Two Arrays in Range, 2144. Guess the Majority in a Hidden Array, 1541. rev2023.7.17.43537. Below is the implementation of the above approach: Time Complexity: O(N). Maximum Number of Tasks You Can Assign, 2074. Missing Number In Arithmetic Progression, 1233. Minimum Number of Days to Make m Bouquets, 1485. Flip Columns For Maximum Number of Equal Rows, 1074. Longest Substring Of All Vowels in Order, 1846. Check If Two Expression Trees are Equivalent, 1614. User Activity for the Past 30 Days II, 1144. Partitioning Into Minimum Number Of Deci-Binary Numbers, 1697. Minimum Moves to Equal Array Elements II, 467. #lecture #leftmostrepeatingcharacter Verify Preorder Sequence in Binary Search Tree, 297. This is the code for leftmost non-repeating char in a string which is not giving correct output. Maximum Fruits Harvested After at Most K Steps, 2107. Determine if Two Events Have Conflict, 2447. Max Dot Product of Two Subsequences, 1460. Minimum Garden Perimeter to Collect Enough Apples, 1955. Number of Submatrices That Sum to Target, 1080. Percentage of Users Attended a Contest, 1634. Maximum Cost of Trip With K Highways, 2249. Online Majority Element In Subarray, 1160. Maximum XOR of Two Non-Overlapping Subtrees, 2482. Sign In. Minimum Cost to Move Chips to The Same Position, 1218. Stack Overflow at WeAreDevelopers World Congress in Berlin. Minimum Number of Removals to Make Mountain Array, 1673. Maximum Running Time of N Computers, 2142.