题解 | 集合遍历

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        List<Integer> list = new ArrayList<>();
        int num1 = scanner.nextInt();
        int num2 = scanner.nextInt();
        int num3 = scanner.nextInt();
        int num4 = scanner.nextInt();
        int num5 = scanner.nextInt();
        scanner.close();
        list.add(num1);
        list.add(num2);
        list.add(num3);
        list.add(num4);
        list.add(num5);
        System.out.print("普通for循环:");

        for(int i=0;i<list.size();i++)
        {
            System.out.printf("%d ",list.get(i));
        }
        

        System.out.println();
        System.out.print("增强for循环:");

        for(Integer i:list)
        {
            System.out.printf("%d ",i);
        }
        

        System.out.println();
        System.out.print("迭代器遍历:");

        Iterator iterator=list.iterator();
        while(iterator.hasNext())
        {
            System.out.printf("%d ",iterator.next());
        }
        

        System.out.println();
    }
}