Reduction Operations to Make the Array Elements Equal.js

/**
 * @param {number[]} nums
 * @return {number}
 */
var reductionOperations = function(nums) {
   nums.sort((a,b)=>a-b);
    let count = 0;
    for(let i = nums.length - 1;i>0;i--)
        if(nums[i] !== nums[i-1])
            count += nums.length - i
    return count
};