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Take K of Each Character From Left and Right, 2520. Count Subarrays With More Ones Than Zeros, 2033. Minimum Total Cost to Make Arrays Unequal, 2503. Maximum Value of a String in an Array, 2499. Maximum Score From Removing Substrings, 1718. Lowest Common Ancestor of a Binary Tree, 255. Minimum Value to Get Positive Step by Step Sum, 1414. User Activity for the Past 30 Days I, 1142. Users That Actively Request Confirmation Messages, 1940. Verify Preorder Serialization of a Binary Tree, 340. Number of Unique Flavors After Sharing K Candies, 2108. Two Furthest Houses With Different Colors, 2083. Number of Adjacent Elements With the Same Color, 2673. 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. Count Substrings with Only One Distinct Letter, 1186. Example 1: Input: S = "geeksforgeeks" Output: g Explanation: g, e, k and s are the repeating characters. Why is "using namespace std;" considered bad practice? Least Number of Unique Integers after K Removals, 1482. Your Task: You don't need to read or print anything. Output: Difference Between Maximum and Minimum Price Sum, 2539. Painting a Grid With Three Different Colors, 1933. User Activity for the Past 30 Days II, 1144. Maximum Number of Points From Grid Queries, 2504. The Earliest Moment When Everyone Become Friends, 1104. GFG Weekly Coding Contest. Longest Chunked Palindrome Decomposition, 1150. Number of People That Can Be Seen in a Grid, 2283. Find the Minimum Number of Fibonacci Numbers Whose Sum Is K, 1415. Steps that were to follow the above approach: Start by iterating through each character in the string. Number of Ways to Stay in the Same Place After Some Steps, 1270. Add Two Polynomials Represented as Linked Lists, 1637. Once the entire string is traversed, We will Strat another loop of size 256 to check the frequency array and if the value of any index is greater than 1, We will return the index and after typecasting that index into the character we will get our answer. Amount of Time for Binary Tree to Be Infected, 2388. Largest Color Value in a Directed Graph, 1864. Populating Next Right Pointers in Each Node, 117. #java Queries on Number of Points Inside a Circle, 1830. How Many Numbers Are Smaller Than the Current Number, 1368. We need to find the character that occurs more than once and whose index of second occurrence is smallest. Smallest Greater Multiple Made of Two Digits, 2001. Resembling Max Consecutive Ones III, but requires hash to keep traversed char and its occurring times in the substring. Maximum Number of Integers to Choose From a Range I, 2556. You will be notified via email once the article is available for improvement. Number of Valid Words for Each Puzzle, 1180. Maximum Number of Words Found in Sentences, 2115. Find the Quiet Students in All Exams, 1413. Traverse string from right to left and If a character repeats, add that index to the result. As template of sliding window suggests, increment right to maximize distance between left & right. Find the Winner of the Circular Game, 1827. Minimum Total Space Wasted With K Resizing Operations, 1960. Lowest Common Ancestor of a Binary Tree II, 1647. #index Replace All ? Insert Delete GetRandom O(1) - Duplicates allowed, 395. Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts, 1466. Minimum Cost to Reach City With Discounts, 2095. Find All Possible Recipes from Given Supplies, 2116. Minimum Operations to Make the Array K-Increasing, 2113. Maximum Candies You Can Get from Boxes, 1299. Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold, 1347. Minimum Time to Type Word Using Special Typewriter, 1976. The Most Frequently Ordered Products for Each Customer, 1597. Average Time of Process per Machine, 1662. Minimum Cost of Buying Candies With Discount, 2146. Check for Contradictions in Equations, 2309. Unique Substrings With Equal Digit Frequency, 2170. Count Unreachable Pairs of Nodes in an Undirected Graph, 2320. Check If a Number Is Majority Element in a Sorted Array, 1151. Lowest Common Ancestor of a Binary Tree IV, 1680. Number of Subarrays with Bounded Maximum, 798. Determine Whether Matrix Can Be Obtained By Rotation, 1887. Output: The left-most repeating character is : a, Output: The left-most repeating character is: a. Number of Nodes in the Sub-Tree With the Same Label, 1520. Maximum Number of Weeks for Which You Can Work, 1954. That is to say, we are not searching the best initializing char that only consumes k different char on the right side. Output: Number of Ways Where Square of Number Is Equal to Product of Two Numbers, 1579. Clone Binary Tree With Random Pointer, 1489. The Number of Passengers in Each Bus I, 2143. Output: First non-repeating character is t. Reason: 256 is a constant so Space complexity is O(1). Categorize Box According to Criteria, 2526. #rope cutting, #java #howto --------- Flip Binary Tree To Match Preorder Traversal, 982. Check whether a String is a Palindrome Check if a String is Subsequence of Other Check for Anagram Index of Leftmost Repeating Character Index of Leftmost Non-repeating Element Reverse words in a string Overview of Pattern Searching in strings Naive Pattern Searching in String Improved Naive Pattern Searching for Distinct Rabin Karp - Pattern . Step-By-Step Directions From a Binary Tree Node to Another, 2098. Number of Ways to Build Sturdy Brick Wall, 2186. #frequencycount How to insert ArrayList into While-condition? Removing Minimum Number of Magic Beans, 2174. Lexicographically Smallest String After Applying Operations, 1628. Smallest Range Covering Elements from K Lists, 659. Design Add and Search Words Data Structure, 235. Friendly Movies Streamed Last Month, 1497. How can it be "unfortunate" while this is what the experiments want? Maximize the Topmost Element After K Moves, 2203. Whenever a character is already repeated then take that index to our answer. Build Array Where You Can Find The Maximum Exactly K Comparisons, 1422. Minimum Additions to Make Valid String, 2646. Longest Substring with At Most K Distinct Characters, 363. Actors and Directors Who Cooperated At Least Three Times, 1058. Check Whether Two Strings are Almost Equivalent, 2071. #gfg It is giving output '1' while the expected output is 'f'. Solve company interview questions and improve your coding intellect You can perform this operation at most k times. Minimum Moves to Reach Target Score, 2141. Number of Unique Subjects Taught by Each Teacher, 2357. Minimum Time For K Virus Variants to Spread, 1957. #index, Input : str = "geeksforgeeks" Search in a Sorted Array of Unknown Size, 708. Count Ways to Build Rooms in an Ant Colony, 1921. Count Total Number of Colored Cells, 2580. Maximum Number of Jumps to Reach the Last Index, 2771. By using our site, you You only need to complete the function repeatedCharacter() that takes a string as a parameter and returns the index of the character. Minimum Numbers of Function Calls to Make Target Array, 1560. Execute Cancellable Function With Delay, 2721. Time Needed to Inform All Employees, 1378. How should a time traveler be careful if they decide to stay and make a family in the past. Smallest Subarrays With Maximum Bitwise OR, 2412. Last Moment Before All Ants Fall Out of a Plank, 1505. Code is given in the comment section.Check more videos on programming questions for placement process: Verify Preorder Sequence in Binary Search Tree, 297. #2dchar array, #android Find the Width of Columns of a Grid, 2640. For example, if s="aabbcba" then the spacing for "a" is [0,0,4,0].It includes the beginning and end of the string. Count Number of Homogenous Substrings, 1761. The Number of Seniors and Juniors to Join the Company, 2005. Expected Time Complexity: O (N) Make Array Zero by Subtracting Equal Amounts, 2358. Count Triplets That Can Form Two Arrays of Equal XOR, 1443. Replace Non-Coprime Numbers in Array, 2200. Make the XOR of All Segments Equal to Zero, 1789. Remove All Adjacent Duplicates in String II, 1210. Number of Times Binary String Is Prefix-Aligned, 1376. Sort Array by Moving Items to Empty Space, 2461. Number of Substrings With Fixed Ratio, 2491. If a character repeats, we update the result. Special Positions in a Binary Matrix, 1585. Find the Smallest Divisor Given a Threshold, 1284. Groups of Special-Equivalent Strings, 915. Longest Repeating Character Replacement - 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. The Score of Students Solving Math Expression, 2020. Frequency of the Most Frequent Element, 1839. Maximum Length of a Concatenated String with Unique Characters, 1240. Intervals Between Identical Elements, 2123. Minimum Amount of Time to Fill Cups, 2340. #search, #java Split Two Strings to Make Palindrome, 1617. Employees Earning More Than Their Managers, 211. Now we can just loop through all the non-repeating characters and find the minimum index or the first index. Maximum Number of Removable Characters, 1899. Finding the Number of Visible Mountains, 2350. Prime Number of Set Bits in Binary Representation, 774. #java Keep Multiplying Found Values by Two, 2155. Count the Number of Good Subsequences, 2541. Maximum Subarray Sum with One Deletion, 1190. Check if One String Swap Can Make Strings Equal, 1794. Disclaimer: Dont jump directly to the solution, try it out yourself first. Longest Palindrome by Concatenating Two Letter Words, 2133. Count Equal and Divisible Pairs in an Array, 2177. #interviewquestions Index of leftmost repeating character: Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree, 1431. Minimum Operations to Make the Integer Zero, 2750. Maximize Sum Of Array After K Negations, 1007. Minimum Swaps to Group All 1's Together II, 2135. Minimum Swaps to Group All 1's Together, 1153. Find the Maximum Number of Marked Indices, 2577. #java Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree . Replace the Substring for Balanced String, 1237. Binary String With Substrings Representing 1 To N, 1026. Given a string consisting of lowercase english alphabets. Remove All Ones With Row and Column Flips, 2131. Remove Zero Sum Consecutive Nodes from Linked List, 1178. Find the Punishment Number of an Integer, 2701. Check if Array Is Sorted and Rotated, 1758. Check If a String Contains All Binary Codes of Size K, 1464. #lecture All Contest and Events. Longest Subarray of 1's After Deleting One Element, 1495. Minimum Remove to Make Valid Parentheses, 1255. Why isn't pullback-stability defined for individual colimits but for colimits with the same shape? Check if All the Integers in a Range Are Covered, 1894. Shortest Unsorted Continuous Subarray, 586. Minimum Operations to Remove Adjacent Ones in Matrix, 2124. Your Task: This is a function problem. GFG Weekly Coding Contest. Apply Operations to Make All Array Elements Equal to Zero, 2776. Count Hills and Valleys in an Array, 2212. Longer Contiguous Segments of Ones than Zeros, 1876. Longest Continuous Increasing Subsequence, 689. Pairs of Songs With Total Durations Divisible by 60, 1011. the output remains the same if we change the input string. Largest Submatrix With Rearrangements, 1731. Count the Number of Complete Components, 2689. Final Value of Variable After Performing Operations, 2014. Count Houses in a Circular Street II, 2760. Sign In. Find Smallest Common Element in All Rows, 1203. Minimize the Maximum Difference of Pairs, 2617. Number Of Rectangles That Can Form The Largest Square, 1727. Construct the Longest New String 2746. Preimage Size of Factorial Zeroes Function, 795. The solution is to run two nested loops. Minimum Length of String After Deleting Similar Ends, 1751. Maximum White Tiles Covered by a Carpet, 2273. Maximum of Absolute Value Expression, 1135. Maximum Number of Events That Can Be Attended, 1354. if all the characters are traversed or the string is empty then. Amount of New Area Painted Each Day, 2160. Find the Student that Will Replace the Chalk, 1896. Find the repeated character present first in the string. #geeksforgeeks Problems Courses Geek-O-Lympics; . Best Time to Buy and Sell Stock with Cooldown, 314. Distinct Prime Factors of Product of Array, 2522. Feb 08 2022 Saved by @Uttam #java #gfg #geeksforgeeks #lecture #string #index #leftmostnonrepeatingcharacter // One Traversal // Efficient Approach-1 : Time Complexity : O (n) static final int CHAR=256; static int nonRep(String str) { int[] fI=new int[CHAR]; Arrays.fill(fI,-1); for(int i=0;i<str.length();i++) { if(fI[str.charAt(i)]==-1) Minimum Number of Steps to Make Two Strings Anagram, 1351. 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. Greatest English Letter in Upper and Lower Case, 2311. #string You are given a string S (both uppercase and lowercase characters). Sum of Nodes with Even-Valued Grandparent, 1317. While at first sight looking like another sliding window question, this one might be more difficult as you need to compare and keep the longest window. Convert Callback Based Function to Promise Based Function, 2779. 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. Find Valid Matrix Given Row and Column Sums, 1606. Examples: Example 1: Input: takeUforward Output: t Explanation: Character 't' is the left-most non-repeating character or the first non-repeating character. Products With Three or More Orders in Two Consecutive Years, 2294. Insufficient Nodes in Root to Leaf Paths, 1081. Minimum Operations to Reduce an Integer to 0, 2572. 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. Average Salary Excluding the Minimum and Maximum Salary, 1493. acknowledge that you have read and understood our. Number of Restricted Paths From First to Last Node, 1787. Customers with Maximum Number of Transactions on Consecutive Days, 2753. Find the Kth Smallest Sum of a Matrix With Sorted Rows, 1441. Shortest Impossible Sequence of Rolls, 2355. Evaluate the Bracket Pairs of a String, 1812. Coordinate With Maximum Network Quality, 1621. Maximum Product of the Length of Two Palindromic Subsequences, 2003. The Earliest and Latest Rounds Where Players Compete, 1904. The k-th Lexicographical String of All Happy Strings of Length n, 1418. Make Costs of Paths Equal in a Binary Tree, 2682. Problems Courses Sale Geek-O-Lympics; Events. Apply Transform Over Each Element in Array, 2639. Concatenation of Consecutive Binary Numbers, 1684. Largest 3-Same-Digit Number in String, 2265. lebron james dunking drawing easy; persuasive essay university. Labeling layer with two attributes in QGIS. Smallest Subtree with all the Deepest Nodes, 873. baggallini modern pocket crossbody #arraylists Maximum Number of Words You Can Type, 1939. This function constructs the spacing between characters in a string. Count Common Words With One Occurrence, 2086. Check Array Formation Through Concatenation, 1644. Find Positive Integer Solution for a Given Equation, 1238.