LeetCode/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;
  }
}