Lonely Integer Problem in Java | Hacker Rank Interview Preparation | 1 Month Preparation Kit.

This video is about Step by step explanation of Lonely Integer problem on Hacker Rank. Solved in 2 Methods:-

1) O(n*n) Method
2) O(n) Method
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Given an array of integers, where all elements but one occur twice, find the unique element.

Example:-
a = [1, 2, 3, 4, 3, 2, 1]
The unique element is 4.

Function Description:-

Complete the lonelyinteger function in the editor below.
lonelyinteger has the following parameter(s):

⚫int a[n]: an array of integers Returns
⚫int: the element that occurs only once

Input Format:-

The first line contains a single integer, n, the number of integers in the array. The second line contains n space-separated integers that describe the values in a.

#lonelyinteger #hackerrank #solution
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