Contains Duplicate — Go Easy Coding Problem

// Contains Duplicate — EASY

// Category: array

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: nums = [1, 2, 3, 1]

Output: true

Contains Duplicate — Pro only

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// Contains Duplicate — EASY

// Category: array

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: nums = [1, 2, 3, 1]

Output: true

Sign up free to start solving problems. The daily challenge is always free — no account needed.