java 快速排序

Posted 2021-01-10 沙漠里的小鱼

    public static void quckSort(int[]  arry,int low ,int high){
       if (low < high) {
            int middle = getMiddle(arry, low, high);
            quckSort(arry, low, middle - 1);
            quckSort(arry, middle + 1, high);
        }
    }

    public static  int   getMiddle(int[]  arry,int low ,int high){
        int temp = arry[low] ;
        while (low < high){
            while (low < high  && arry[high] >= temp ){
                high-- ;
            }
            arry[low] =arry[high] ;
            while (low < high  && arry[low] <= temp){
                low++ ;
            }
            arry[high] = arry[low] ;
        }
        arry[low] =temp;
        return  low ;
    }