First Repeating Element |
This is the video under the series of DATA STRUCTURE & ALGORITHM in a HASHING Playlist. We are going to solve the problem First Repeating Element from geeksforgeeks which is solved by using unordered_map in c++
Given an array arr[] of size n, find the first repeating element. The element should occur more than once and the index of its first occurrence should be the smallest.
Input:
n = 7
arr[] = {1, 5, 3, 4, 3, 5, 6}
Output: 2
Explanation: 5 is appearing twice and its first appearance is at index 2 which is less than 3 whose first occurring index is 3.
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We also Provide courses on Competitive Programming and Data structure and Algorithms. Please see our Full Playlist on our Channel.
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Home Work: HW: https://practice.geeksforgeeks.org/pr...
First Repeating Element: https://practice.geeksforgeeks.org/pr...
code in This Video: https://github.com/Prince-1501/Hello_...
Pdf in this video: https://github.com/Prince-1501/Hello_...
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