1509. Minimum Difference Between Largest and Smallest Value in Three Moves

class Solution {
    public int minDifference(int[] nums) {
        if(nums.length<=4){
            return 0;
        }
        int len = nums.length;
        Arrays.sort(nums);
        int Answer = Integer.MAX_VALUE;
        for(int  i=0; i<4; i++){
            Answer = Math.min(Answer, nums[len-1-3+i] -nums[i] );
        }
        return Answer;
    }
}