java 最大值和最小值

/*
        int[] arr={20,63,2,56,89,10,2,89};
        int max =arr[0];
        int min =arr[0];



        for (int i = 1;i<arr.length;i++){
            if (arr[i]>max){
                max=arr[i];
            }

            if (arr[i]<min){
                min=arr[i];
            }

        }
        System.out.println("max="+max);
        System.out.println("min="+min);