java - 如何在 java 中使用 Stacks 和 Queue 制作闪存卡

Question

我不确定如何实现堆栈和队列你能告诉我这个类是否以正确的方式实现它。因为它会执行 LIFO 和 FIFO，因为它运行良好，但我只是想确定一下。你能告诉我用arraylist与堆栈和队列实现它的区别吗？谢谢

import java.io.BufferedReader;

import java.io.BufferedWriter;
import java.io.File;
import java.io.IOException;
import java.io.FileReader;
import java.io.FileWriter;

import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.Queue;

public class Deck {
private File file;
private String fileName = "Untitled";
private boolean Modified;
private boolean TestRunning;
private int numCorrect;
private int numWrong;

static Queue<QuizCard> quizCardList = new LinkedList<>();
static Queue<QuizCard> quizCardList2 = new LinkedList<>();


static int curr_size;  

 Deck()  
{  
    curr_size = 0;  
}  

static void push(int x)  
{  
    curr_size++;  


    quizCardList.add((QuizCard) quizCardList);


    while (!quizCardList.isEmpty())  
    {  
        quizCardList.add(quizCardList.peek());  
        quizCardList2.remove();  
    }  

    // swap the names of two queues  
    Queue<QuizCard> q = quizCardList;  
    quizCardList = quizCardList2;  
    quizCardList2 = q;  
}  

static void pop(){  


    if (quizCardList.isEmpty())  
        return ;  
    quizCardList.remove();  
    curr_size--;  
}  

static QuizCard top()  
{  
    if (quizCardList.isEmpty())  
      //  return -1;  
    return quizCardList.peek();
    return null;  
}  

static int size()  
{  
    return curr_size;  
}  





/** addQuizCard - creates and adds a QuizCard to quizCardList */
void addQuizCard(String q, String a){

    if(q.length() == 0){
        q = " ";
    }
    if(a.length() == 0){
        a = " ";
    }
    quizCardList.add(new QuizCard(q, a));
}



/** readFile - loads in the data from a saved deck into quizCardList */
void readFile(String fileLocation){
    file = new File(fileLocation);
    setFileName(file.getName());
    assert file.canRead();
    try(BufferedReader input = new BufferedReader(new FileReader(file))){
        int letterNumber;
        StringBuilder dataToParse = new StringBuilder();
        while((letterNumber = input.read()) != -1){
            dataToParse.append((char) letterNumber);
        }

    }catch(IOException ioEx){
        ioEx.printStackTrace();
    }
}


void save(String fileLocation){
    file = new File(fileLocation);
    assert file.canWrite();
    try (BufferedWriter output = new BufferedWriter(new FileWriter(file))) {
        for(QuizCard quizCard : quizCardList){

        }
    }catch(IOException ioEx){
        ioEx.printStackTrace();
    }
}


void shuffle(){
    Collections.shuffle((List<?>) quizCardList);
}


String getFileLocation(){
    return file.getAbsolutePath();
}

String getFileName(){
    return fileName;
}

boolean getIsModified(){
    return Modified;
}

boolean getIsTestRunning(){
    return TestRunning;
}

int getNumCorrect(){
    return numCorrect;
}

int getNumWrong(){
    return numWrong;
}

List<QuizCard> getQuizCardList(){
    return (List<QuizCard>) quizCardList;
}


void setFileName(String fileName) {
    if(fileName.contains(".")){
        fileName = fileName.split("\\.")[0];
    }
    this.fileName = fileName;
}

void setIsModified(boolean newValue){
    Modified = newValue;
}

void setIsTestRunning(boolean newValue){
    TestRunning = newValue;
}

void setNumCorrect(int newValue){
    numCorrect = newValue;
}

void setNumWrong(int newValue){
    numWrong = newValue;
}

}

标签： javadata-structures