Java数组操作实例-优快云博客

本文提供了几个Java编程示例，展示了如何使用数组进行基本的操作，包括存储字符串和整型数据、查找最小值、统计特定数值出现次数等。这些例子有助于理解数组的基本用法。

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第2题

package com.bdqn.demo;

public class Demo6 { //第2题
// 在java中，数组可以存储，一组连续的，数据类型相同的，元素

public static void main(String[] args) {
  System.out.println("请输入5句话");
  String [] shuju = new String [] {"在java中","数组可以存储"," 一组连续的","数据类型相同的","元素"};
  for (int i = 0; i < shuju.length; i++) {
   System.out.println("第"+(i+1)+"句话:"+shuju[i]);
  }
  System.out.println("逆序输出5句话:");
  for (int i=shuju.length-1; i>=0; i--) {
   System.out.println(shuju[i]);
  }
}

}

第3题

package com.bdqn.dierzhangjie;

public class Demo { //第3题
public static void main(String[] args) {
int points[] = new int[] {18,25,7,36,13,2,89,63};   //存储八名顾客积分
int min = 0;     //存储最低积分
int index = points.length;   //存储最低积分下标
min = points[0];    //设置最低积分下标为0
    for (int i = 0; i < points.length; i++) {
        if(min>points[i]) {
            min = points[i];
            index = i;
        }
    }
    System.out.println("最低的积分为："+min);
    System.out.println("最低的积分的下标为："+index);
}
}

第4题

package com.bdqn.demo;

import java.util.Scanner;

public class Demo7 { //第4题
public static void main(String[] args) {
  int [] nums = new int [10];
  int [] count = new int [4];
  Scanner input = new Scanner(System.in);
  System.out.println("请输入10个数");
  for (int i = 0; i < nums.length; i++) {
   nums[i]=input.nextInt();
   switch ( nums[i] ) {
   case 1:
    count[0]++;
    break;
   case 2:
    count[1]++;
    break;
   case 3:
    count[2]++;
    break;

   default:
    count[3]++;
    break;
   }
  }
  System.out.println("数字1的个数:"+count[0]);
  System.out.println("数字2的个数:"+count[1]);
  System.out.println("数字3的个数:"+count[2]);
  System.out.println("非法数字的个数:"+count[3]);
}
}

第5题

package com.bdqn.demo;

public class Demo8 { //第5题
public static void main(String[] args) {
  int[] array = new int[] { 1, 3, -1, 5, -2 };
  int[] newArray = new int[5];
  System.out.println("原数组为:");
  for (int i = 0; i < array.length; i++) {
   System.out.print(array[i] + " ");
  }
  System.out.print("逆序并处理后的数组为:");
  for (int i = array.length - 1; i >= 0; i++) {
   continue;

  }

}
}

题6题

package com.bdqn.demo;

import java.util.Arrays;
import java.util.Scanner;

public class Demo9 { //第6题

public static void main(String[] args) {
  String [] musics = new String [] {"Island","Ocen","Pretty","Sun"};
  String [] music1 =Arrays.copyOf(musics,5);
  int index =music1.length;
  System.out.println("插入前的数组为:");
  for (int i = 0; i < musics.length; i++) {
   System.out.print(musics[i]+" ");
  }
  Scanner input = new Scanner(System.in);
  System.out.println("\n请输入歌曲名称:");   //输入歌曲名 :Ready
  String m = input.next();
  for (int i = 0; i < musics.length; i++) {
   if (musics[i].compareToIgnoreCase(m)>0) {
    index = i;
    break;
   }
  }
  for (int i = music1.length - 1;i>index;i--) {
   music1[index] = m;
  }
  System.out.println("\n插入后的数组为:");
  for (int i = 0; i < music1.length; i++) {
   System.out.print(music1[i]+" ");
  }
}
}