學(xué)生分?jǐn)?shù)的最小差值

class Solution {
    public int minimumDifference(int[] nums, int k) {
        Arrays.sort(nums);

        int left = 0,right = 0;
        int min = Integer.MAX_VALUE;
        while(right < nums.length){
            while(right - left + 1 > k){
                left++;
            }
            if(right - left + 1 == k){
                min = Math.min(min,nums[right] - nums[left]);
            }
            right++;
        }
        return min;
    }
}