lonely integer hackerrank solution in python
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Title: Solving the Lonely Integer Problem on HackerRank using Python
Introduction:
The Lonely Integer problem on HackerRank is a straightforward coding challenge that involves finding the only integer in an array that occurs exactly once. The array consists of pairs of integers, except for one lonely integer. In this tutorial, we'll walk through the problem statement, discuss the logic behind the solution, and provide a Python code example.
Problem Statement:
You are given an array of integers. All numbers in the array occur twice except for one integer, which occurs only once. Your task is to find and print the unique integer.
Input:
Output:
Solution Approach:
To solve the Lonely Integer problem efficiently, we can use the XOR (^) bitwise operator. The XOR operation between two identical numbers results in 0, while XOR with 0 remains unchanged. By applying XOR to all the elements in the array, the duplicate elements will cancel each other out, leaving only the lonely integer.
Python Code Example:
Explanation:
Conclusion:
Solving the Lonely Integer problem on HackerRank can be efficiently done using the XOR bitwise operator. Understanding the XOR logic and applying it to cancel out duplicate elements will help you find the unique integer in the array. The provided Python code example can be used as a template to implement the solution.
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