148. Find Duplicate

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Input: nums = [1, 3, 4, 2, 2]

Output: 2

Explanation: The number 2 appears twice in the array.

Input: nums = [3, 1, 3, 4, 2]

Output: 3

Explanation: The number 3 appears twice in the array.

Input: nums = [3, 3, 3, 3, 3]

Output: 3

Explanation: The number 3 is the only duplicate present in the array.

Time Complexity

N/A

Space Complexity

N/A