job

package com.study.month8.job07.job01;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;

/*1.定义一个字符串数组,存入{"张三","李四","王老五","赵老六","迪丽热巴","马尔扎哈"}
   2.使用增强for遍历数组,找出名字为两个字和名字为四个字的人存入集合中.
   3.使用迭代器遍历集合.删除名字中包含马的人.
   4.修改李四的名字为李老四.*/
public class job01 {
    public static void main(String[] args) {
        String[] str = {"张三", "李四", "王老五", "赵老六", "迪丽热巴", "马尔扎哈"};
        ArrayList<String> arr = new ArrayList<>();
        for (String s : str) {
            if (s.length() == 2 || s.length() == 4) {
                arr.add(s);
            }
        }
        for (int i = 0; i < str.length; i++) {
            System.out.print(str[i] + "  ");
        }
        System.out.println();
        System.out.println(arr);
        System.out.println("--------------");
        Iterator<String> ite = arr.iterator();
        for (int i = 0; i < arr.size(); i++) {
            String s = arr.get(i);
            if ("李四".equals(s)) {
                arr.set(i, "李老四");
            }
        }
        System.out.println(arr);
        System.out.println("--------------");

        while (ite.hasNext()) {
            String s = ite.next();
            if (s.contains("马")) {
                System.out.println(s);
                ite.remove();
            }
        }
        System.out.println(arr);
    }


}