找出并给出下标

 

import java.util.Scanner;
public class For02{
    public static void main(String[] args){
    System.out.println("找到数值并给出下标");
    //定义一个数组
    int [] arr= {24,69,80,57,13};
    for(int i=0;i<arr.length;i++){
        if(arr[i]==57){
            System.out.println("i:"+i+",arr[i]:"+arr[i]);
        }

    }
    
    
    

        }//main                                     
}

 

import java.util.Scanner;
public class For02{
    public static void main(String[] args){
    System.out.println("找到字符串并给出下标");
    //定义一个数组
    String [] arr= {"aa","bb","cc","dd","ee"};
    for(int i=0;i<arr.length;i++){
        if(arr[i].equals("cc")){
            System.out.println("i:"+i+",arr[i]:"+arr[i]);
        }

    }
    
    
    

        }//main                                     
}