题解 | #多线程打印#

public class Main {

    public static volatile  boolean flag = false;

    public static void main(String[] args) {

        new Thread(() -> {
            for (int i = 1; i < 53; i=i+2) {
                while(flag);
                System.out.print(i);
                System.out.print(i+1);
                flag=true;

            }
        }).start();

        new Thread(() -> {
            for (int i = 0; i < 26; i++) {
                while(!flag);
                System.out.print((char)(i+'A')+" ");
                flag=false;

            }
        }).start();
    }


}