Contains Duplicate Leetcode 217 Python3 Java C C

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In this video, we dive deep into a widely used coding problem:

Today we will solve "

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This question is from the Blind 75 series, The solution explained is of O(n) Time Complexity and uses O(n) space complexity.

This problem is considered to be Easy difficulty on

Given an array of integers, find if the array

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Given an integer array nums, return true if any value appears at least twice in the array, and return false if every element is distinct.

Most teachers introduce solutions as fully-formed recipes. But in doing so, they totally miss how solutions are DISCOVERED.