4-9

package practice4_9;

import java.util.Arrays;

/*
 * 编写数组静态赋值
 */
public class test01 {

    public static void main(String[] args) {
        int[] arr1  = {10,20,30,40,50};
        System.out.println(Arrays.toString(arr1));
        /*
         * 动态赋值
         */
        int[] arr2 = new int[5];
        int a= 1;
        for (int i = 0; i < arr2.length; i++) {
            arr2[i]=a*10;
            System.out.println(arr2[i]);
            a++;
        }
        /*
         * 数组求和 平均值
         */
        int[] arr3= {23,45,22,33,56};
        int sum=0;
        for (int i = 0; i < arr3.length; i++) {
            sum+=arr3[i];
        }
        System.out.println(sum);
        int average = sum/arr3.length;
        System.out.println(average);
        /*
         * 最大值和下标记
         */
        int[] arr4 = {18,25,7,36,13,2,89,63};
        int max = arr4[0];
        int i;
        for ( i = 0; i < arr4.length; i++) {
            if (max<arr4[i]) {
                max=arr4[i];
            }
        }
        System.out.println(max);
        for (int j = 0; j < arr4.length; j++) {
            if (max==arr4[j]) {
                System.out.println(j);
            }
        }
    }
    
}