WebSep 25, 2024 · Print the first non repeating character in a string. Example : In the string somecharsjustdon'tliketorepeat, m is the first non-repeating charecter. My attempt : New Code : Old one was not working as expected so I have updated the post. Old code can be found below new code WebSOLUTION 1 Sort the input array. Traverse the array and check for missing and repeating. Time Complexity: O (n log n) SOLUTION 2 Use count array Time Complexity: O (n), O (n) space SOLUTION 3 Use elements as index and mark visited as negative (if input is positive) Time Complexity: O (n) Solution
First non-repeating character in a stream of characters InterviewBit
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Stacks And Queues - InterviewBit
WebJul 20, 2024 · Given an integer array Aof size N, find the first repeating element in it. We need to find the element that occurs more than onceand whose index of first occurrence is smallest. If there is no repeating element, return -1. int Solution::solve(vector &A) { int n=A.size(); unordered_map m; if(n==1) return -1; for(int i=0;i WebMay 7, 2024 · You have to make new string B. B is formed such that we have to find the first non-repeating character each time a character is inserted to the stream and append it at the end to B. If no non-repeating character is found then append '#' at the end of B. Input 1: A = "abadbc" Output 1: "aabbdd" Input 2: A = "abcabc" Output 2: "aaabc#". WebSep 15, 2014 · The first repeating element is 5 Time Complexity: O (n). Auxiliary Space: O (n). Thanks to Mohammad Shahid for suggesting this solution. Find the first repeating … brownstone chestnut flooring