1.题目描述 2.知识点
注1:
String类提供了一个repeat方法,该方法用于将指定的字符串重复指定的次数。
public class Main {public static void main(String[] args) {String repeatedString "abc".repeat(3);System.out.println(repeatedS…
IPC
InterProcess Communication
The concept of IPC
Each process has a differnt user addess space,and local variables 各自看不见,so 进程间通信 need kernel(内核), so a buffer is opened in the kernel,process 1 copies data from user space to this buffer,and …