604. 滑动窗口内数的和_动窗 值求和。求数组内所有窗 为k的和。

604. 滑动窗口内数的和 

•  描述
•  笔记
•  数据
•  评测

public class Solution {
    /**
     * @param nums: a list of integers.
     * @param k: length of window.
     * @return: the sum of the element inside the window at each moving.
     */
    public int[] winSum(int[] nums, int k) {
        // write your code here
        if(nums.length==0){
            return nums;
        }
        ArrayList list = new ArrayList();
        int sum = 0;
        for(int i = 0; i < nums.length-(k-1);i++){
            sum = 0;
            int j = i;
            int x=k;
            while(x>0){
                sum +=nums[j];
                j++;
                x--;
            }
            list.add(sum);
        }
        int a[] = new int[list.size()];
        for(int i = 0; i < a.length; i++){
            a[i]=(int)list.get(i);
        }
        return a;
    }
}