3396-minimum-number-of-operations-to-make-elements-in-array-distinct

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js

/**
 * @param {number[]} nums
 * @return {number}
 */
var minimumOperations = function(nums) {
    let mySet = new Set();
    for(let I = nums.length-1; I>=0; I--){
        if(mySet.has(nums[I])){
            return Math.floor(I/3)+1;
        }
        mySet.add(nums[I]);
    }

    return 0;
};