判断一个字符串是否在一个字符串数组里

Posted 2022-06-03 靖-Drei

判断一个字符串是否在一个字符串数组里

package test;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class isBelongList 
    private static boolean isBelongList(String str)
        String[] strArray = "1","2","3";        
        boolean bResult = false;


//      for (String temp : strArray) 
//          if (temp.equals(str)) 
//              bResult = true;
//          
//      

        List<String> fauCodeList = new ArrayList<String>();
        fauCodeList=Arrays.asList(strArray);
        if(fauCodeList.contains(str)==true)
        
            bResult=true;

        


        return bResult; 
    
    public static void main(String[] args)
    
        if(isBelongList("4"))
        
            System.out.println("yes");
        else
        
            System.out.println("no");
        
    

将字符串输入插入函数

package test;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class isBelongList 
    private static boolean isBelongList(String[] strArray,String str)

        boolean bResult = false;


//      for (String temp : strArray) 
//          if (temp.equals(str)) 
//              bResult = true;
//          
//      

        List<String> fauCodeList = new ArrayList<String>();
        fauCodeList=Arrays.asList(strArray);
        if(fauCodeList.contains(str)==true)
        
            bResult=true;

        


        return bResult; 
    
    public static void main(String[] args)
    
        String[] strArray = new String[200];  
        strArray[0]="1";
        strArray[1]="2";
        if(isBelongList(strArray,"2"))
        
            System.out.println("yes");
        else
        
            System.out.println("no");