Python的语句与语法 语句角色例子赋值创建引用值aApple,bbike调用执行函数log.write(mylog)打印调用打印对象print(1,hello)if/elif/else选择动作if a in b: print(a)for/else序列迭代for i in list: print(i)while/else一般循环while True: print(True)pass空占位符for i in l…
package demo8;/*** author xianyu* version 1.0* date 2020/4/20 14:30* 单例模式: 懒汉式单例模式*/
public class singleInstance1 {public static void main(String[] args) {for (int i 0; i < 1000; i) {Thread t new Thread(()->{Teacher.getInstanc…
package demo8;
/*** author xianyu* version 1.0* date 2020/4/20 12:11* 单链表的归并排序*/
public class mergeSort {public static void main(String[] args) {Node head new Node(7);head.next new Node(5);head.next.next new Node(3);head.next.next.next new Node…