dsa · easy

Contains Duplicate

GreyOrangeArrayHash SetFoundation

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.

Arguments

• nums — the input array of integers

**Example 1:** `` Input: nums = [1,2,3,1] Output: true ` **Example 2:** ` Input: nums = [1,2,3,4] Output: false ``

Constraints

1 <= nums.length <= 10^5 Hidden tests include near-max size for this bound; a slower-than-intended solution TLEs.

Examples

Example 1

Input:
[1,2,3,1]

Expected:
true

Example 2

Input:
[1,2,3,4]

Expected:
false

Open in the Dojo editor