第六周上机作业

1.package finish;
public class csy {
    public static void main(String[] args) {
         int arr [] ={10,20,30,40,50};

            for(int i = 0;i<arr.length;i++){
                System.out.print(arr[i]);
                System.out.print(" ");
            }
        }

    }

2.package finish;
public class csy {
    public static void main(String[] args) {
         int arr [] =new int[5];
         arr [0] = 10;
         arr [1] = 20;
         arr [2] = 30;
         arr [3] = 40;
         arr [4] = 50;
            for(int i = 0;i<arr.length;i++){
                System.out.print(arr[i]);
                System.out.print(" ");
            }
        }

    }

3.package finish;
public class csy {
    public static void main(String[] args) {
         
         int arr [] =new int[]{23,45,22,33,56};
           double sum=0; 
           for(int i = 0;i<arr.length;i++){
                sum+=arr[i];
            }
                System.out.println("最大值:"+sum);
                System.out.println("平均值:"+sum/arr.length);
                
        }
    }

4.package finish;
public class csy {
    public static void main(String[] args) {
        int[] arr = { 18, 25, 7, 36, 13, 2, 89, 63 };
        int max = arr[0];
        int maxIndex = 0;

        for (int i = 1; i < arr.length; i++) {
        if (max <= arr[i]) {
        max = arr[i];
        maxIndex = i;
        }
    }
        System.out.println("最大值为：" + max + "
最大值下标为：" + maxIndex);

        }
    }

5.package finish;
public class csy {
    public static void main(String[] args) {
        int arr[] = new int[]{7,2,51,32,78,28};
        int arr2[] = new int[arr.length];
        for(int i = 0; i < arr.length; i++){
            int value = arr[arr.length-(i+1)];
                arr2[i] = value;
            System.out.println(arr2[i]);
        }
   }
}

6.package finish;
public class csy {
    public static void main(String[] args) {
        int[] arr = {5,18,28,48};
        int[] arr1 = new int[5];
        int a = 8;
        for (int i = 0; i < arr.length; i++) {
        if (arr[i] > a) {
            arr1[i] = a;
        for (i = i + 1; i < arr1.length; i++) {
            arr1[i] = arr[i - 1];
            }
        } else {
            arr1[i] = arr[i];
            }
        }
        for (int i = 0; i < 5; i++) {
            System.out.print(+arr1[i]);
            System.out.print(" ");
            }
        }
    }