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Stack/Queue

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Stack Example

package com.collection.stack;

import lombok.AllArgsConstructor;
import lombok.Getter;

@AllArgsConstructor
@Getter
public class Coin {
    private int value;
}
Java
복사

package com.collection.stack;

import java.util.Stack;

public class StackExample {
    public static void main(String[] args) {
        Stack<Coin> coinBox = new Stack<>();
        coinBox.push(new Coin(500));
        coinBox.push(new Coin(100));
        coinBox.push(new Coin(50));
        coinBox.push(new Coin(10));
        coinBox.push(new Coin(5));
        coinBox.push(new Coin(1));

        while (!coinBox.isEmpty()) {
            Coin c = coinBox.pop();
            System.out.println("꺼낸 동전 : " + c.getValue() + "원, " + coinBox.size() + "개 남음");
        }
    }
}
Java
복사

•

Queue Example

package com.collection.queue;

import lombok.AllArgsConstructor;
import lombok.Getter;

@AllArgsConstructor
@Getter
public class Message {
    private String command, to;
}
Java
복사

package com.collection.queue;

import lombok.AllArgsConstructor;
import lombok.Getter;

import java.util.LinkedList;
import java.util.Queue;


public class QueueExample {
    public static void main(String[] args) {
        Queue<Message> msgQueue = new LinkedList<>();

        msgQueue.offer(new Message("sendMail", "허클베리피"));
        msgQueue.offer(new Message("Call", "팔로알토"));
        msgQueue.offer(new Message("sendKakao", "E-sens"));
        msgQueue.offer(new Message("CallDeny", "Uneducated Kids"));

        while (!msgQueue.isEmpty()) {
            Message msg = msgQueue.poll();
            switch (msg.getCommand()) {
                case "sendMail":
                    System.out.println(msg.getTo() + "에게 메일을 보냅니다.");
                    break;
                case "Call":
                    System.out.println(msg.getTo() + "에게 전화합니다.");
                    break;
                case "sendKakao":
                    System.out.println(msg.getTo() + "에게 카톡합니다.");
                    break;
                case "CallDeny":
                    System.out.println(msg.getTo() + "에게 오는 전화는 무시합니다.");
                    break;
            }
        }
    }
}
Java
복사