Contains Duplicate

Given an integer array 'nums’, return 1(true) if any value appears at least twice in the array, and return 0(false) if every element is distinct.

Input Format

First Parameter - Number n

Second Parameter - Array of Integer arr

Output Format

Return the integer(0 or 1)

Example 1:

Input:
    4
    1 2 3 1
Output:
    1
Explanation:
    '1' is repeated two times.

Example 2:

Input:
    4
    1 2 3 4 
Output:
    0
Explanation:
    No values are repeated.

Constraints:

• 1 <= nums.length <= 105
• -10^9 <= nums[i] <= 10^9