Leetcode 442. Find All Duplicates in an Array - Python Solution

Problem Statement: [[ Ссылка ]]
Given an integer array nums of length n where all the integers of nums are in the range [1, n] and each integer appears once or twice, return an array of all the integers that appears twice.

You must write an algorithm that runs in O(n) time and uses only constant extra space.
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Key Moments
0:00 Intro to How to Find All Duplicates in an Array
0:19 Explanation of How to Find All Duplicates in an Array
1:20 Code for How to Find All Duplicates in an Array
2:12 Results
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