写两个线程，一个线程打印1~52，另一个线程打印A~Z,打印顺序是12A34B...5152Z

package www.bit;

/*1. 写两个线程，一个线程打印1~52，另一个线程打印A~Z,打印顺序是12A34B...5152Z*/
class Print{
    private int flag = 1;
    private int count = 1;
    public synchronized void printNum(){
        while(flag!=1){
            //此时应该打印字母
            try {
                wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.print(2*count-1);
        System.out.print(2*count);
        flag = 2;
        notify();
    }
    public synchronized void printChar(){
        while(flag!=2){
            //此时应该打印数字
            try {
                wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.print((char)(count-1+'A'));
        //继续前行。
        count++;
        flag = 1;
        notify();
    }

}
public class Test {
    public static void main(String[] args) {
        Print print = new Print();
        new Thread(()->{
            for(int i = 0;i<26;i++){
                print.printNum();
            }
        }).start();
        new Thread(()->{
            for(int i = 0;i<26;i++){
                print.printChar();
            }
        }).start();
    }
}