java 实现窗口函数

public class SlidingWin {


    public static void main(String[] args) {
        SlidingWin slidingWin = new SlidingWin();
        double v = slidingWin.SlidWin(2);
        System.out.println(v);
    }
    public double  SlidWin(int k){
        int []  array =new int[]{2,4,5,6,9,10,12,23,1,3,8,17,22};

        //求出第一个滑动窗口的值
        int sum =0;
        for(int i=0;i<k;i++){
            sum+=array[i];
        }
        //从后面开始从k位置开始移动
        int max=sum;//求出最大值
        int lengths = array.length;
        for(int i=k;i<array.length;i++){
           sum=sum-array[i-k ]+array[i];
            if(max<sum){
                max=sum;
            }

        }
        System.out.println(max);
        return 1.0* max/k;
    }

    public  double slidWin(int k){

        int[]arrays =new int[]{1,5,3,2,6,9,7,8,10,4,12};

        int sum =0;
        for(int i=0;i<k;i++){
            sum+=arrays[i];
        }
        int max=sum;
        int length = arrays.length;

        for(int i=k;i<length;i++){
            sum=sum-arrays[i-k]+arrays[k];
            max = Math.max(sum, max);
        }

        return 1.0* max/k;
    }



}