349. Minimum Operations to Equal Elements

Given an array of integers nums, return the minimum number of operations required to make all elements equal, where each operation increments n - 1 elements by 1.

Example:
Input: nums = [1,2,3]
Output: 3

Explanation: [1,2,3] → [2,3,3] → [3,4,3] → [4,4,4]. Three operations.

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