求助：请问无cs背景如何最快开始leetcode刷题

打算下年去加拿大读it的college，去之前想尽快提前开始刷题和弄一个full-stack的个人网站用来展示自己的portfolio。 我目前打算看完berkeley的cs61ab，coursera的algo I&II就开始，这些知识够我开始用java刷essy的题目吗。 请问还要要学一点discrete math和object-oriented的概念吗。 谢谢大佬们

• Author: nmsl_hongdi
• Created: 2022-07-02 14:05:39 UTC
• Score: 3
• ID: iektw0x
• Ups=3 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iektw0x/

至少学点Java语法？

• Author: 5akura
• Created: 2022-07-02 14:28:11 UTC
• Score: 1
• ID: iekwom7
• Ups=1 | Submitter=true | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iekwom7/

嗯嗯感觉要先搞清楚这个

• Author: nmsl_hongdi
• Created: 2022-07-02 14:29:32 UTC
• Score: 3
• ID: iekwurm
• Ups=3 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iekwurm/

discrete math和OO先别学 对刷题没有帮助

• Author: Ubengable_Weird_Ass
• Created: 2022-07-02 14:23:17 UTC
• Score: 29
• ID: iekw1wr
• Ups=29 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iekw1wr/

建议先学JavaSE，过一遍JavaSE之后再学数据结构与算法(cs61b或者别的渠道)，然后再开刷力扣，可以按频率刷，或者按leetbook专题（比如数组专题，链表专题之类的），有一定题量积累之后可以参与周赛，或者模拟面试这种相对更有时间限制紧张氛围的模式。

• Author: 5akura
• Created: 2022-07-02 14:28:49 UTC
• Score: 5
• ID: iekwrj8
• Ups=5 | Submitter=true | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iekwrj8/

很详细谢谢🙏

• Author: [deleted]
• Created: 2022-07-02 15:10:11 UTC
• Score: 5
• ID: iel28nf
• Ups=5 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iel28nf/

刷题顺序可以去搜labuladong

• Author: 5akura
• Created: 2022-07-02 15:19:14 UTC
• Score: 2
• ID: iel3gnm
• Ups=2 | Submitter=true | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iel3gnm/

谢谢先收藏了

• Author: [deleted]
• Created: 2022-07-02 15:28:12 UTC
• Score: 2
• ID: iel4ojf
• Ups=2 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iel4ojf/

我是网工最近刚转开发，也是刚开始学，OP共勉💪

• Author: whoooops-
• Created: 2022-07-02 14:38:06 UTC
• Score: 1
• ID: iekxybj
• Ups=1 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iekxybj/

cs61b在哪学呢

• Author: Ubengable_Weird_Ass
• Created: 2022-07-02 15:03:17 UTC
• Score: 2
• ID: iel1a6t
• Ups=2 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iel1a6t/

油管上有一些Josh Hug教授上传的课程

• Author: whoooops-
• Created: 2022-07-02 15:29:18 UTC
• Score: 1
• ID: iel4tv6
• Ups=1 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iel4tv6/

好像不全呢

• Author: Ubengable_Weird_Ass
• Created: 2022-07-02 15:49:28 UTC
• Score: 4
• ID: iel7k1b
• Ups=4 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iel7k1b/

https://www.youtube.com/playlist?list=PLgNUCz66KaWRSVzIeT_qB2yBgHocLmRWI

这有个合集，标题倒是声称complete

• Author: whoooops-
• Created: 2022-07-02 17:42:31 UTC
• Score: 1
• ID: ieln361
• Ups=1 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ieln361/

感谢

• Author: [deleted]
• Created: 2022-07-02 14:47:33 UTC
• Score: 3
• ID: iekz7lh
• Ups=3 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iekz7lh/

友友们怎么看OO，我看现在 Rust 这些新语言都没有继承了

• Author: [deleted]
• Created: 2022-07-02 15:03:37 UTC
• Score: 4
• ID: iel1byi
• Ups=4 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iel1byi/

另外现在的Java开发是不是滥用了OO？看到现在CRUD的小项目都几十个class，看Spring源码里面的继承关系复杂到看吐了

• Author: springeverythingaaa
• Created: 2022-07-02 18:51:34 UTC
• Score: 1
• ID: ielwfto
• Ups=1 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ielwfto/

这个东西你经验多了就懂了。。。。现在可以先别管。

• Author: [deleted]
• Created: 2022-07-02 19:35:41 UTC
• Score: 2
• ID: iem28hc
• Ups=2 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iem28hc/

也许吧，我之前也写过C#，也没有这个问题， .NET自带的的依赖注入配置也比较简单

感觉是Java语言功能太少导致的，没有extension method是其中之一，C# 的类型系统也更强大一点（指能让泛型接口static dispatch），虽然比不过Scala的就是了

• Author: Dont_feed_theUnicorn
• Created: 2022-07-03 00:18:48 UTC
• Score: 1
• ID: ien21ly
• Ups=1 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ien21ly/

试试Golang?

• Author: [deleted]
• Created: 2022-07-03 01:52:26 UTC
• Score: 1
• ID: iencqk1
• Ups=1 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iencqk1/

Go也没有extension method，Rust有extension trait

比起Go更想用Rust

• Author: Dont_feed_theUnicorn
• Created: 2022-07-03 02:02:18 UTC
• Score: 1
• ID: iendumk
• Ups=1 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iendumk/

怎么大家都在promote rust,这下不得不学了😂

• Author: [deleted]
• Created: 2022-07-02 20:01:29 UTC
• Score: 1
• ID: iem5k6n
• Ups=1 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iem5k6n/

Java还有一个设计得不好的地方就是Checked Exception，Spring把这些都包装成了Unchecked Exception，而Scala Kotlin Groovy都没有Checked Exception，所以感觉Spring这样复杂的设计目的之一就是为了绕过Java的一些限制

• Author: springeverythingaaa
• Created: 2022-07-02 20:04:04 UTC
• Score: 1
• ID: iem5wc2
• Ups=1 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iem5wc2/

我对这方面研究过一些，有一些感悟。我们可以探讨一下？私信你了。

• Author: zakura61
• Created: 2022-07-02 15:42:39 UTC
• Score: 3
• ID: iel6mug
• Ups=3 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iel6mug/

Rust还是挺支持OO的，只不过继承换个了名字，把实体类和抽象类分开，还是OO那一套

• Author: zakura61
• Created: 2022-07-02 15:43:08 UTC
• Score: 2
• ID: iel6p7l
• Ups=2 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iel6p7l/

不过FP才是未来，Elixir大法好！

• Author: [deleted]
• Created: 2022-07-02 16:59:39 UTC
• Score: 1
• ID: ielh5hc
• Ups=1 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ielh5hc/

https://queue.acm.org/detail.cfm?id=3212479

此文的作者也持这种观点，设想了一种为Erlang设计的计算机

• Author: [deleted]
• Created: 2022-07-02 17:01:59 UTC
• Score: 1
• ID: ielhha7
• Ups=1 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ielhha7/

我若既要用Java找工作，又要用FP，我是不是该看看Scala？

• Author: springeverythingaaa
• Created: 2022-07-02 18:52:03 UTC
• Score: 0
• ID: ielwi70
• Ups=0 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ielwi70/

这个语言没有公司招

• Author: zakura61
• Created: 2022-07-03 02:01:21 UTC
• Score: 2
• ID: iendqrk
• Ups=2 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iendqrk/

用java就别FP了

• Author: [deleted]
• Created: 2022-07-03 02:39:02 UTC
• Score: 1
• ID: ienhyxf
• Ups=1 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ienhyxf/

你是认为非纯FP非FP？

• Author: [deleted]
• Created: 2022-07-16 14:49:45 UTC
• Score: 1
• ID: igefakw
• Ups=1 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/igefakw/

这几天玩了玩Elixir，和其他玩过的FP语言一样都大量使用Linked List而非Vector，我还需要时间接受，如果性能这个问题不解决FP能成为未来吗？

• Author: [deleted]
• Created: 2022-07-16 17:28:36 UTC
• Score: 1
• ID: igf1jlq
• Ups=1 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/igf1jlq/

现在发现了Gleam语言，和Rust有相似的语法，编译器也是Rust编写，静态类型，非纯FP，同样运行在BEAM虚拟机上，感觉是Rust with GC

• Author: zakura61
• Created: 2022-07-16 18:27:56 UTC
• Score: 1
• ID: igf9x8l
• Ups=1 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/igf9x8l/

听上去是把Rust的优点之一给扔了

• Author: [deleted]
• Created: 2022-07-16 18:56:52 UTC
• Score: 1
• ID: igfdyfu
• Ups=1 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/igfdyfu/

有人用Go不用Rust就是因为Rust没有GC自动管理对象生命周期

基于BEAM等于附送了Goroutine等价物

Rust本身有第三方GC库，C/C++也有bdwgc，具体实现细节run后再研究

据传C# 12终于要加入 discriminated union，都是MS 家的，不知道为什么不让 F# 上位

.NET 个人感觉不错，工具链非常友好，但是 C# 感觉当年抄 Java 带来历史包袱太多，至今没有free function，想写procedure还得思考如何取类名，如何组织类，盼 F# 归

• Author: Anarco-Statist
• Created: 2022-07-02 16:32:58 UTC
• Score: 8
• ID: ieldhhm
• Ups=8 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ieldhhm/

学个几把，当年搞竞赛都是给题直接做，做不出背答案，背多了就懂了

• Author: [deleted]
• Created: 2022-07-02 16:51:04 UTC
• Score: 1
• ID: ielfz5y
• Ups=1 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ielfz5y/

难道你们说的刷题指的是刷Codeforces？

• Author: Hollande_Uranus
• Created: 2022-07-02 18:14:18 UTC
• Score: 1
• ID: ielrfy5
• Ups=1 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ielrfy5/

你是当年靠竞赛考大学的？

• Author: Anarco-Statist
• Created: 2022-07-02 20:22:21 UTC
• Score: 4
• ID: iem89kl
• Ups=4 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iem89kl/

傻批高考狗都不考

• Author: Hollande_Uranus
• Created: 2022-07-02 20:53:13 UTC
• Score: 1
• ID: iemc7fo
• Ups=1 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iemc7fo/

所以你是竞赛保送还是直接出国读本了？

• Author: Anarco-Statist
• Created: 2022-07-02 20:57:31 UTC
• Score: 2
• ID: iemcqvc
• Ups=2 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iemcqvc/

晶哥别问了

• Author: Hollande_Uranus
• Created: 2022-07-02 21:25:09 UTC
• Score: 0
• ID: iemg9zg
• Ups=0 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iemg9zg/

我不是晶哥。。

• Author: RemoteHoney
• Created: 2022-07-02 22:13:47 UTC
• Score: 2
• ID: iemmg7k
• Ups=2 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iemmg7k/

晶姐妳好

• Author: Hollande_Uranus
• Created: 2022-07-02 22:31:22 UTC
• Score: -8
• ID: iemonym
• Ups=-8 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iemonym/

你看我像娘们？

• Author: shogunpang
• Created: 2022-07-02 17:58:54 UTC
• Score: 5
• ID: ielpbzq
• Ups=5 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ielpbzq/

我自己是学完了coursera algo I&II然后刷leetcode的，但是那个时候你会发现leetcode的easy太easy了..

那门课的作业评分系统做得挺好的，好好做作业的话能学到不少java语法或者style方面的东西。

• Author: killzhinakillkill
• Created: 2022-07-02 18:05:47 UTC
• Score: 3
• ID: ielqa63
• Ups=3 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ielqa63/

数据结构和java手册 java比较通用 还没c++难数据结构是刷题基础

• Author: 5akura
• Created: 2022-07-03 00:05:20 UTC
• Score: 1
• ID: ien0g6x
• Ups=1 | Submitter=true | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ien0g6x/

好的，这个手册在哪里学比较好，youtube吗

• Author: killzhinakillkill
• Created: 2022-07-03 04:49:21 UTC
• Score: 1
• ID: ienvnaa
• Ups=1 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ienvnaa/

就找点门槛低的网课 手册网上找

• Author: Vast_Spite8928
• Created: 2022-07-02 18:38:06 UTC
• Score: 1
• ID: ielunxj
• Ups=1 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ielunxj/

直接看算法竞赛入门经典

• Author: [deleted]
• Created: 2022-07-02 18:41:34 UTC
• Score: 1
• ID: ielv46l
• Ups=1 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ielv46l/

里面写的代码风格太差了

• Author: Weary_Region2683
• Created: 2022-07-02 20:33:02 UTC
• Score: 1
• ID: iem9n53
• Ups=1 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iem9n53/

我直接先学c++，途中既有数据结构也有oop。感觉挺好。刷题就用python

• Author: 5akura
• Created: 2022-07-03 00:00:44 UTC
• Score: 1
• ID: iemzw21
• Ups=1 | Submitter=true | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iemzw21/

我怕c++太难自学学不会

• Author: [deleted]
• Created: 2022-07-03 01:16:27 UTC
• Score: 3
• ID: ien8nlr
• Ups=3 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ien8nlr/

C with Classes可以看看，学习它的对象实现原理，例如非静态成员函数实质是隐式传入了this指针，virtual函数是编译器生成了vtable进行dynamic dispatch

• Author: [deleted]
• Created: 2022-07-03 01:17:20 UTC
• Score: 2
• ID: ien8r35
• Ups=2 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ien8r35/

RAII也是很重要的，然后你就可以去看Rust了

• Author: Dont_feed_theUnicorn
• Created: 2022-07-02 22:18:12 UTC
• Score: 4
• ID: iemn0a8
• Ups=4 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iemn0a8/

可以按tag刷，比如你今天学了DP，就去leetcode上疯狂刷DP的题，完全搞懂再换下一个tag

• Author: 5akura
• Created: 2022-07-03 00:01:13 UTC
• Score: 1
• ID: iemzy64
• Ups=1 | Submitter=true | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/iemzy64/

这个不错谢谢

• Author: [deleted]
• Created: 2022-07-03 02:35:34 UTC
• Score: 1
• ID: ienhk61
• Ups=1 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ienhk61/

[deleted]

• Author: [deleted]
• Created: 2022-07-03 02:57:15 UTC
• Score: 4
• ID: ienk0gx
• Ups=4 | FlairColor=dark | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ienk0gx/

[deleted]

• Author: 5akura
• Created: 2022-07-03 03:06:11 UTC
• Score: 1
• ID: ienl05q
• Ups=1 | Submitter=true | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ienl05q/

不求最优解

听说公司面试会要求用big O给出最优解？

• Author: TXKlaaaa
• Created: 2022-07-03 07:42:07 UTC
• Score: 3
• ID: ieo9ens
• Ups=3 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ieo9ens/

先学点数据结构和算法设计的基本知识。然后直接开做，不会就抄。抄多了就会了

• Author: shinaman_
• Created: 2022-07-03 08:42:09 UTC
• Score: 1
• ID: ieodjoi
• Ups=1 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ieodjoi/

可以去花钱买acwing的算法基础课，如果不想花钱就去看代码随想录 这是我自己学算法的方法

• Author: 5akura
• Created: 2022-07-03 09:10:34 UTC
• Score: 1
• ID: ieofh7n
• Ups=1 | Submitter=true | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ieofh7n/

代码随想录

谢谢这个网站我先收藏

• Author: Zapung
• Created: 2022-07-06 21:53:22 UTC
• Score: 1
• ID: if4n9mv
• Ups=1 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/if4n9mv/

直接b站搜尚硅谷的Java入门视频看一遍，然后再看多一套数据结构的视频，再刷算法题吧

• Author: Realistic_Bell_9256
• Created: 2022-07-08 16:04:56 UTC
• Score: 1
• ID: ifcxure
• Ups=1 | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/ifcxure/

就你还尼寇？

• Author: fgs78ejlfs
• Created: 2022-07-19 15:32:07 UTC
• Score: 1
• ID: igsfg2l
• Ups=1 | AuthorPremium=true | Permalink=/r/iwanttorun/comments/vpsbfp/求助请问无cs背景如何最快开始leetcode刷题/igsfg2l/

零基础的话， leetcode从easy开始， 多重复几遍再做medium然后hard。我的经验是不要叫自己太沮丧， 先搞懂简单的题。

语言用哪个都可以， 最好会java或c++。 我就是这么转码的。 完全没上过课。

不需要学discrete math， 但是Object oriented programming 要懂。