【java线程】两线程交叉打印出12a34b56c....5152z

 

我的网友smith某天研究线程 非要我实现这么个效果 一个线程打印1-52 另一个线程打印a-z 通过synchronized控制两线程交叉输出 1 2 a 3 4 b 5 6 c .... 51 52 z , 于是我非常蛋疼的写下了如下的代码:

 

 
public class Main { 
    static NumT numT = new NumT();
    static CharT charT = new CharT();
    
    static char[] chars = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
    
    public static void main(String[] args) { 
        synchronized (numT) { 
            numT.start();  
            numT.notifyAll();
            try {numT.wait();}catch (InterruptedException e){e.printStackTrace();} 
            charT.start(); 
        }
    }

    static class NumT extends Thread{
        @Override
        public void run() {
            try {sleep(1000);}catch (InterruptedException e){e.printStackTrace();} 
             for(int i=0;i<51;){
                 synchronized (numT) {    
                    System.out.println(++i);
                    System.out.println(++i); 
                    numT.notifyAll();
                    try {numT.wait();}catch (InterruptedException e){e.printStackTrace();} 
                 }
             }
        }
    }
    
    static class CharT extends Thread{
        @Override
        public void run() { 
             for(int i=0;i<26;i++){ 
                 synchronized (numT) {    
                    System.out.println(chars[i]);  
                    numT.notifyAll(); 
                    try {numT.wait();}catch (InterruptedException e){e.printStackTrace();} 
                 }
             } 
        }
    }
}