Problem Link

Problem Statement

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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.

Example 1:

Input: nums =

\[1,2,3,1\]

Output: true

Example 2:

Input: nums =

\[1,2,3,4\]

Output: false

Example 3:

Input: nums =

\[1,1,1,3,3,4,3,2,4,2\]

Output: true

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Solutions:

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1. Brute force

Given that we have an array of elements to identify if a given element is duplicated, we will compare the element with the rest of the array and this needs to be done for all the elements in the array.