Given an integer array nums, return true if any value appears at least twice, and false if every element is distinct.
Examples
Example 1
- Input
- nums = [1, 2, 3, 1]
- Output
- true
- Why
- The value 1 appears at indices 0 and 3.
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
Constraints
1 <= nums.length <= 10^5-10^9 <= nums[i] <= 10^9