Ds220702 7.7作业

1、已有数组保存1,3,5,2,4,6
    控制台输出：6 4 2 5 3 1 

package com.hp.demo07;

public class D1 {
    public static void main(String[] args) {
        int[] a = {1,3,5,2,4,6};
        for (int i = a.length - 1; i >= 0 ; i--) {
            System.out.print(a[i]+",");
        }
    }
}

2、已有数组保存1,5,9,3,5,7，请颠倒数组元素的存放位置并输出
    注意：颠倒后的数组{7,5,3,9,5,1}
    控制台输出：7 5 3 9 5 1

package com.hp.demo07;

import java.util.Arrays;

public class D2 {
    public static void main(String[] args) {
        int[] a = {1,5,9,3,5,7};
        for (int i = 0,j = a.length -1 ; i < j; i++ ,j--) {
            int p  = a[i];
            a[i] = a[j];
            a[j] = p;
        }
        for (int i = 0; i < a.length; i++) {
            System.out.println(a[i]);
        }
        System.out.println(Arrays.toString(a));

    }
}

3、求出数组{15,35,5,-20,60}中的最大值和最小值
    控制台输出：
        最大值：60
        最小值：-20

package com.hp.demo07;

public class D3 {
    public static void main(String[] args) {
        int[] a = {15,35,5,-20,60};
        int d = a[0];
        int x = a[0];
        for (int i = 0; i < a.length; i++) {
            if (a[i] > d) {
                d = a[i];
            }
        }
        System.out.println("最大值："+d);
        for (int i = 0; i < a.length-1 ; i++) {
            if (a[i] < x) {
                x = a[i];
            }
        }
        System.out.println("最小值："+x);
    }
}

4、键盘输入10个数，存到数组中，打印奇数位元素的值
    注意：如果数组是{10,11,12,13,14,15},则奇数位元素是10，12，14

package com.hp.demo07;

import java.util.Scanner;

public class D4 {
    public static void main(String[] args) {
        System.out.println("请输入数字");
        Scanner sc = new Scanner(System.in);
        int[] a = new int[10];
        int[] b = new int[10];
        for (int i = 0; i  
 
5
 
、有数组{1,22,0,3,44,0,0,5,66,7,0,0,0,88,9}
     要求生成一个不包含0的新数组，并控制台遍历该数组
     新数组：{1,22,3,44,5,66,7,88,9}
 
package com.hp.demo07;

import java.util.Arrays;

public class D5 {
    public static void main(String[] args) {
        int[] a = {1,22,0,0,3,0,0,0,4,0,56,68};
        int x =0;
        int j = 0;
        for (int i = 0;i