Rambo Zhu

一生放荡不羁爱自由

Five things you will never regret

5 Things You Will Never Regret: Quitting a job you hate Letting go of toxic people that put you down Learning a skill you’ve always wanted to learn Spending more time with friends and fam...

Posted by Yuanbo on February 23, 2020

Deep copy of a linkedlist with random pointer

深拷贝带随机指针的链表三遍遍历。 O(n) time, O(n) space 分成3步：复制节点，如A-B-C => A-A’-B-B’-C-C’ 依次遍历节点A,B,C，将A’B’C’这些节点的随机指针与其一致 (A’.rand -> A.rand.next) 分离成 A-B-C 和 A’-B’-C’，A’-B’-C’便是所求链表 END

Posted by Yuanbo on February 7, 2020

High Executives from China and India

Data Encryption/Signature 很早就想写点关于中国和印度管理者的一些东西。这些年在国外公司外企带了六年了，能力中国有最优秀的工程师，可印度Top的工程师也很有水平。欧美大企业里的CTO，架构师，高级技术人才印度人是不少的。你不能说人家都不行吧。总结概括和沟通 END

Posted by Yuanbo on January 15, 2020

JWS and JWE

Data Encryption/Signature The payload fields submitted by clients in the APIs contain sensitive information, which must be encrypted and signed using JWE (JSON Web Encryption) and JWS (JSON Web Si...

Posted by Yuanbo on December 18, 2019

Payradise

Nowadays people are increasingly using popular mobile wallets to carry out more local transactions. But the question arises, how do you pay overseas? With bank card, you have to pay hefty transacti...

Posted by Yuanbo on November 26, 2019

What is innovation?

Syntax The syntax for the IN condition in Oracle/PLSQL is: expression IN (value1, value2, … value_n); OR expression IN (subquery); Parameters or Arguments expression The value to test. value1, va...

Posted by Yuanbo on November 20, 2019

What is innovation?

Tim Kastelle writes innovation is “not just having an idea—but executing it so that it creates value.” I like that he incorporates three key concepts: an idea, execution, and value creation. You’ll...

Posted by Yuanbo on November 20, 2019

IDEA IntelliJ

我在XXXX的时候，有一段时间离职冲动特别强烈，因为感觉每天就是开会开会开会，某天我坐在会议室里看着窗外，心里忽然浮现出来一个念头，难道我这一辈子都要这样过了么，看着旁边的同事的样子，感觉真是众人皆醉我独醒啊！直到发了年终奖。十年间3千到6万， Transaction 事物级别 TALENT Our people is the source of our differentiat...

Posted by Yuanbo on November 11, 2019

IDEA IntelliJ

Command+F12 查看file，method结构图、类继承机构图 Command+shift+Option+U 查看maven依赖，类图 Command+E　　定位到最近浏览过的文件 Ctrl+H　　显示类结构图（类的继承层次） Shift+F6 重命名 Ctrl+F6 重构函数 Note: ctrl is command in Mac G用于直接跳转到文件尾 ZZ用于存盘退出...

Posted by Yuanbo on November 3, 2019

JAVA 9, 10 & 11

JAVA 9, 10 & 11 JAVA is still hard to beat. EF DB setup /usr/userName/certs/jpa-persistence.properties JDBC date –> Timestamp timestamp –> Timestamp API user without context path ``...

Posted by Yuanbo on May 13, 2019