记录一段短暂但非常努力的感情最终没能逃过分手的经历,真滴好难过鸭

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shaonan 发表于 2018-3-18 10:25:50 | 显示全部楼层 |阅读模式
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周日 南京 雨
不想做没有目标得过且过的人 不想做什么都懂就是没有行动的人
自己的惰性真是可怕 目标有了 行动方案有了 就是懒得动啊
不过做一条咸鱼 每天吃吃喝喝 吹吹牛逼是真的舒服
所以就把目标修改为在加州海滩上吹牛逼吧
从没在社交媒体上立过什么flag 今天试试
可能外部的压力会有些用 毕竟这么大岁数了 要脸
先来个一百天吧 尝尝咸淡



补充内容 (2018-6-27 00:20):
6.26
周二 包头 热
一百天结束
再来个flag
从现在到离境前多刷200道题

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 楼主| shaonan 发表于 2018-5-21 23:54:14 | 显示全部楼层
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5.21
Hashtable + String |

收到了面试邀请, 和金一夫畅聊三小时,开始意淫在一号公路上开车的样子了。。
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 楼主| shaonan 发表于 2018-3-19 00:26:55 | 显示全部楼层
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3.18
一:完成61b abstract classes和Java packages,lab5
1. abstract classes should just be extended, we cannot say new on that type.
2. abstract method has no body, and abstract method should only appear in abstract class. we can use it to define part of the protocol for a group of subclasses and for polymorphism.
3. the first concrete class must implements all abstract methods
4. the compiler decides whether you can call a method based on the reference type, not the actual object type.
5. java doesnot allow multiple inheritance, but you can implements as many interfaces as you want. the interface is 100% pure abstract class. and the methods in interface are all public and abstract, we'd better donot type these two words.
6. use super to invoke superclass's methods.

二:leetcode 119. Pascal's Triangle II
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 楼主| shaonan 发表于 2018-3-20 02:17:45 | 显示全部楼层
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3.19
一:leg day: squat 100(5*4) 80(8*2)60(10*2) rear leg pull 70 80 90  leg press 290(10*2)  260(10*2) 230  190
二:cs61b pj1
三:leetcode 1. Two Sum
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 楼主| shaonan 发表于 2018-3-21 01:38:56 | 显示全部楼层
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3.20
一:finish cs61bb pj1
二:
leetcode
21. Merge Two Sorted Lists
dummy node recursion(base case, divide and conquer)
53. Maximum Subarray
have not understood it completely...

ps: 记录一下黑妹分享的鸡汤

                               
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以及pj1中让人心生向往的话:

                               
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 楼主| shaonan 发表于 2018-3-22 03:06:03 | 显示全部楼层
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3.21
一:chest day: bench press(80 3sets*5reps 60 1set*10rep)  incline bench press(50 4set*9reps) butterfly (70 4sets*8reps) cable crossover (60 4sets*10reps)
二:learnt git : \git add filename   \git commit -m "description"   \git status   \git diff   \git log   \git reflog   \git reset --hard commit_id   \git checkout -- filename   \git reset HEAD filename   \git rm filename
三:cs61b hw4: inheritance!
1. you can add new fields in your subclass, but not modify fields in superclass
2.in the constructor of your subclass, it will invoke super.constructor() automatically, only if you invoke another super's constructor with params.
3.inheritance means you want to use some properties of superclass, and specify some of them or add new ones. you should only focus on the specifying and adding parts. if you don't change the params and return type(can be subclass of the origin return type), you are overriding. if you change the params(order, type or numbers of params ), no matter whether you changed the return type, you are overloading!
四:cs61b Exceptions
1.when a run-time error occurs, JVM will throw a exception, you should solve it, or your program will halt. using try and catch to solve such exceptions. try can be followed by several catches, and the order is matter, cuz the program will match first proper catch. so put the most specific one on the top and the most general one on the bottom.
2. class extends Exception        method throws XxxException      in method body throw new XxxException()
3.if there are anything should be executed no matter exception occurs or not, you should put finally{} after catch. and finally will run even if there is return in try or catch.
4.when facing exceptions, you must follow try/catch or duck principle, which means other than use try/catch to solve them, you can just add the "throws XxxException" to modify your method when you calling the risky method. in this way, the method, which called the risky method , become a risky method. anyone who call this method must make a choice between try/catch and duck.
5.the top-level of class exception is Throwable, and Exception and Error are subclass of it. error and RunTimeException are unchecked, which means method dealing with them can throw exceptions without in a class with throws XxxException modifier.  other exceptions are checked, which means you must make the throws modifier.

ps:
今天和黑妹聊了俩小时,给我讲述了她疯狂关心她的牙买加妈妈制定的交往对象标准,以及她在牙买加度过的因为聪明而受校园霸凌的小学生涯,面对一个另一国度的同龄女人突然对你袒露心扉,还真有点不适应。。时不时的再来个害羞的小表情。。我仿佛看到了黑妹狂野卷发下水汪汪的大眼睛以及粉嫩的少女心。。
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 楼主| shaonan 发表于 2018-3-23 09:09:34 | 显示全部楼层
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3.22
??? 第四天就颓了???
今天好像只是学会了用github,看了看树??? 晚上我妈给我打电话说感觉我今天有好事。。接着就收到duke面试了。。然后就聊了一晚上天???下不为例下不为例。。。 慎独啊。。。

GitHub:
1.create a new repo, and use ssh in your terminal to connect that repo
2.connect the local git repo and the remote repo using "git remote add origin xxxxx"
3.push local contents to remote repo(named origin with the master branch) using "git push -u origin master"
4.clone other's repo using "git clone xxxxx"
5.fetch and merge any modification in remote repo using "git pull xxxxx"
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 楼主| shaonan 发表于 2018-3-24 01:50:38 | 显示全部楼层
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3.33
一:binary search tree  :  implement find(), insert() and delete() three functions
二:cs61b 16 more java
1.class without public can not be subclassed in another package, class with final modifier cannot be subclass, class with a private constructor cannot have subclass
2.final variables cannot be changed when initialized, final method cannot be overridden, final class cannot be extended
3.generics <T> .  
   difference between java generics and c++ templates : java compiles one bytecode for a single class no matter what type of object it contains . while c++ compiles for every types of objects, whose cons is that one class may turn into lots of machine code, and the pros are you can use primitive type in it and you get code optimized for every type of objects. however java generics do not work with primitive types.
4.you should avoid fields and method shadowing!
三:cs61b lab 6. review the exception. and how to compile java code in terminal : javac -d dir1 dir2/*.java java xxxxx (xxxxx should be completed class name including package name).
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 楼主| shaonan 发表于 2018-3-25 01:38:09 | 显示全部楼层
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3.34
一: shoulder-gains workout:
1. seated shoulder press (20*10reps 30*10reps 40*9reps 50*7reps*2)
2.rear-delt fly (10*15reps*2  15*15reps*2)  
3.cable single-arm lateral raise (30*10reps*2 40*7reps*2)
4.external rotation (30*12reps*2 40*10reps*1)
二:cs61b lab6 finished and pushed to github
三:cs61b 18 encapsulation : is a way of preventing our private fields and data structure.
pros:
1.if we know the interface we can implement a new version of ADT independantly
2.preventing people from visiting private data and this can reduce debugging time a lot
3.it is good for teamwork, documentation and maintenance
四:leetcode 100. Same Tree, 111. Minimum Depth of Binary Tree, 104. Maximum Depth of Binary Tree, 112. Path Sum
五:计算机系统基础
1. 计算机系统抽象层:

                               
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2. 冯诺伊曼结构:控制器 运算器 存储器 输入设备 输出设备
3. 计算机如何工作: 执行程序前(将数据和指令按序存放在存储器中,程序起始地址给PC) 执行程序(按照PC去存储器中取指令-》指令译码-》取操作数-》执行指令-》回写结果-》修改PC值-》继续下一指令)

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vtiaocao 发表于 2018-3-25 02:05:56 | 显示全部楼层
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lz加油,先pink了
lz不是刚毕业么。。怎么就上岁数了
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