13 数组作为方法参数

package com.wys.java;

//数组做为方法参数
//定义方法，打印输出数组元素的值
public class arrayFunctionDemo {
    public void printArray(int[] arr){
        for(int i=0; i<arr.length; i++){
            System.out.print(arr[i]+" ");
        }
        System.out.println();
    }

    public static void main(String[] args) {
        int[] arr = {10,20,30,40,50};
        arrayFunctionDemo admo = new arrayFunctionDemo();
        admo.printArray(arr);
    }
}

package com.wys.java;

import java.util.Scanner;

public class arraySearch {
    //查找数组中是否有某个值
    public boolean arrSearch(int[] arr, int n){
        boolean flag = false;
        for(int i=0; i<arr.length; i++){
            if(arr[i] == n){
                flag = true;    //找到了
                break;
            }
        }
        return  flag;
    }

    public static void main(String[] args) {
        int[] arr1 = {10,20,30,40,50,60};
        System.out.println("请输入要查找的元素：");
        Scanner sc = new Scanner(System.in);
        int target = sc.nextInt();      //保存输入的目标值

        arraySearch arrsearch = new arraySearch();
        boolean flag = arrsearch.arrSearch(arr1, target);

        if(flag){
            System.out.println("数组中有该元素");
        }else{
            System.out.println("数组中没有该元素");
        }
    }
}