LeetCode/problems/java/reduction-operations-to-make-the-array-elements-equal.java

class Solution {
    public int reductionOperations(int[] nums) {
        Arrays.sort(nums);

        int counter = 0;

        for (int i = nums.length - 1; i > 0; --i) {
            if (nums[i - 1] != nums[i]) {
                counter += nums.length - i;
            }
        }

        return counter;
    }
}