遍历数组中的内容

package ch06;

import java.util.Scanner;

/**
 * Created by liwenj on 2017/7/18.
 */
public class test11 {
    public static void main(String[] args) {
        int[] a = {1, 2, 3, 4, 5, 6, 7};
        int sum = 0;
        //输出没一个数字
        for (int i = 0; i < a.length; i++) {
            System.out.println("\t" + a[i]);
        }
        //求和
        for (int i = 0; i < a.length; i++) {
            sum = sum + a[i];
        }
        System.out.println("和是" + sum);
        //输入一个数字判断数组里面有没有这个数
        Scanner input = new Scanner(System.in);
        boolean s = false;
        System.out.println("输入一个数字:");
        int num = input.nextInt();
        for (int i = 0; i < a.length; i++) {
            if (num == a[i]) {
                s=true;
                System.out.println("有这个数字,这个数是：" + a[i]);
                break;
            }
        }
        if(s==false){
            System.out.println("没有要查找的元素");
        }

    }
}