public class Demo {
    
    public static void main(String[] args) {
        int[] nums = new int[10];
        for(int i = 0; i < 10; i++) {
            nums[i] = (int) (Math.random() * 999) + 1;
        }
        Demo demo = new Demo();
        demo.maxMin(nums);
        for(int i : nums) {
            System.out.print(i + "\t");
        }
    }
    
    public void maxMin(int[] nums) {
        int max = nums[0];
        int min = nums[0];
        for(int i : nums) {
            if(max < i) {
                max = i;
            }
            if(min > i) {
                min = i;
            }
        }
        System.out.println("最大致为：" + max + ",最小值为:" + min + ".");
    }

}

------解决方案--------------------
public class Test{
	public static void maxMin(int[] nums) {
		int temp = 0;
		int i = 0, j = 0;
		for (i = 0; i < nums.length; i++) {
			for (j = 0; j < nums.length - 1; j++) {
				if (nums[j] < nums[j + 1]) {
					temp = nums[j];
					nums[j] = nums[j + 1];
					nums[j + 1] = temp;
				}
			}
		}
		for (int a : nums) {
			System.out.print(a + ",");

		}
		System.out.println();
		System.out.println("************************************");
		System.out.println("最大值为:" + nums[0]);
		System.out.println("最小值为:" + nums[j]);
	}

	@SuppressWarnings("null")
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		int arr[] = new int[10];
		for (int i = 0; i < 10; i++) {
			int m = (int) (Math.random() * 1000);
			arr[i] = m;
		}
		Test.maxMin(arr);
	}
}


------解决方案--------------------
public class Test{
	public static void maxMin(int[] nums) {
		int temp = 0;
		int i = 0, j = 0;
		for (i = 0; i < nums.length; i++) {
			for (j = 0; j < nums.length - 1; j++) {
				if (nums[j] < nums[j + 1]) {
					temp = nums[j];
					nums[j] = nums[j + 1];
					nums[j + 1] = temp;
				}
			}
		}
		for (int a : nums) {
			System.out.print(a + ",");

		}
		System.out.println();
		System.out.println("************************************");
		System.out.println("最大值为:" + nums[0]);
		System.out.println("最小值为:" + nums[j]);
	}

	@SuppressWarnings("null")
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		int arr[] = new int[10];
		for (int i = 0; i < 10; i++) {
			int m = (int) (Math.random() * 1000);
			arr[i] = m;
		}
		Test.maxMin(arr);
	}
}