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学习算法
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‎.gitignore‎

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coverage
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.vscode
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.DS_Store
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temp

‎README.zh-CN.md‎

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‎examples/README.md‎

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# 算法练习
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- 阶乘函数 [factorial]
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- 斐波那契数列 [fibonacci]
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- 全局唯一标识符
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- [uuid]
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- [guid]
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- Twitter的雪花算法 [snowflake]
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- LZ系列压缩算法
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- LZ系列压缩算法均为LZ77与LZ78的变种,在此基础上做了优化。
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- LZ77:LZSS、LZR、LZB、LZH;
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- LZ78:LZW、LZC、LZT、LZMW、LZJ、LZFG。
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- 其中,LZSS与LZW为这两大阵容里名气最响亮的算法。LZSS是由Storer与Szymanski [2]改进了LZ77:增加最小匹配长度的限制,当最长匹配的长度小于该限制时,则不压缩输出,但仍然滑动窗口右移一个字符。Google开源的Snappy压缩算法库大体遵循LZSS的编码方案,在其基础上做了一些工程上的优化。
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- LRU
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- 判断回文数
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- 最长回文子串 https://www.cnblogs.com/en-heng/p/3973679.html
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- 去掉重复值(数组)
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- 找出字符串中出现次数最多的字母
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- 求最大值、最小值
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- 验证是否为数组
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Node.js大众点评爬虫 https://www.cnblogs.com/en-heng/p/5895207.html
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- lz77 算法
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- https://www.jb51.net/article/23024.htm
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- https://www.jb51.net/article/120912.htm
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- 随机算法 random
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- uuid
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- 随机洗牌 knuth-shuffle
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- http://caibaojian.com/js-random-array.html
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- https://www.h5jun.com/post/array-shuffle.html
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- http://caibaojian.com/get-random-element.html
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- 5分钟现场撸代码——谈总结会抽奖程序 https://www.h5jun.com/post/luckey-draw-in-5-minutes.html
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- Twitter的雪花算法 snowflake
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重学前端 https://www.w3cplus.com/relearn-the-front-end-techniques.html
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排序算法
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第三届360前端星计划在线作业题
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https://www.h5jun.com/post/75team-star-handlock.html
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用65行代码实现JavaScript动画序列播放
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https://www.h5jun.com/post/sixty-lines-of-code-animation.html
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为什么 [ ] 是 false 而 !![ ] 是 true
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https://www.h5jun.com/post/why-false-why-true.html
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https://www.cnblogs.com/en-heng/category/582209.html
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【十大经典数据挖掘算法】SVM系列 https://www.cnblogs.com/en-heng/p/5965438.html
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别人家的面试题:不可变数组快速范围求和 https://75team.com/post/range-sum-query-immutable.html
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别人家的面试题:自然数拆分求最大乘积 https://75team.com/post/integer-break.html
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别人家的面试题:统计"1"的个数(续) https://75team.com/post/count_bits.html
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https://www.h5jun.com/post/html5-element-flowchart.html
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HTML5 元素选择流程图
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https://www.h5jun.com/post/multiply7.html 别人家的面试题:不用加减乘除,求整数的7倍
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C4.5
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K-Means
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SVM
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Apriori
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EM
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PageRank
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AdaBoost
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kNN
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Naïve Bayes
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CART

‎examples/factorial/README.md‎

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# 阶乘函数 Factorial
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描述:一个正整数的阶乘是所有小于及等于该数的正整数的积,并且有`0`的阶乘为`1`。自然数`n`的阶乘写作`n!`。
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阶乘函数是[递归(Haskell)函数](https://zh.wikibooks.org/zh/Haskell/%E9%80%92%E5%BD%92)典型示例
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参考资料:
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- https://www.w3cplus.com/javascript/factorial-function-in-javascript.html
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# Javascript Node CircleCI 2.0 configuration file
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#
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# Check https://circleci.com/docs/2.0/language-javascript/ for more details
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#
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version: 2
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jobs:
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build:
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docker:
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# specify the version you desire here
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- image: circleci/node:8.11.1
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# Specify service dependencies here if necessary
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# CircleCI maintains a library of pre-built images
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# documented at https://circleci.com/docs/2.0/circleci-images/
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# - image: circleci/mongo:3.4.4
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working_directory: ~/repo
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steps:
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- checkout
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# Download and cache dependencies
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- restore_cache:
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keys:
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- v1-dependencies-{{ checksum "package.json" }}
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# fallback to using the latest cache if no exact match is found
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- v1-dependencies-
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- run: yarn install
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- save_cache:
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paths:
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- node_modules
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key: v1-dependencies-{{ checksum "package.json" }}
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# run tests!
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- run: yarn test
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‎examples/fibonacci/README.md‎

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# 斐波那契数列 fibonacci
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<p>
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<a href="https://circleci.com/gh/jskit/kit-fibonacci/tree/dev"><img src="https://img.shields.io/circleci/project/jskit/kit-fibonacci/dev.svg" alt="Build Status"></a>
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<a href="https://codecov.io/github/jskit/kit-fibonacci?branch=dev"><img src="https://img.shields.io/codecov/c/github/jskit/kit-fibonacci/dev.svg" alt="Coverage Status"></a>
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</p>
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使用 JavaScript 尽可能快地来计算斐波那契数列。
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from https://github.com/jskit/kit-fibonacci
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const assert = require('assert')
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const fastfib = require('../lib/index')
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assert.equal(fastfib(0), 0)
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assert.equal(fastfib(1), 1)
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assert.equal(fastfib(2), 1)
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assert.equal(fastfib(3), 2)
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assert.equal(fastfib(4), 3)
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assert.equal(fastfib(5), 5)
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assert.equal(fastfib(6), 8)
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assert.equal(fastfib(7), 13)
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assert.equal(fastfib(8), 21)
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assert.equal(fastfib(9), 34)
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assert.equal(fastfib(10), 55)
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assert.equal(fastfib(11), 89)
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assert.equal(fastfib(12), 144)
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console.log('Test passed')
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// https://www.npmjs.com/package/benchmark
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const assert = require('assert');
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const suite = new (require('benchmark')).Suite;
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const recurse = require('../lib/recurse');
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const tail = require('../lib/tail');
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const iter = require('../lib/iter');
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/* eslint new-parens: 0 */
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// const suite = new Suite
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/* eslint func-names: 0 */
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suite
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.add('recurse', () => { recurse(20); })
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.add('tail', () => { tail(20); })
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.add('iter', () => { iter(20); })
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.on('complete', function () {
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console.log('result: ');
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// console.log(this)
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this.forEach((result) => {
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console.log(result.name, result.count, result.times.elapsed);
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});
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assert.equal(
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this.filter('fastest').map('name'),
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'iter',
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'expect iter to be the fastest',
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);
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})
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.run();

‎examples/fibonacci/package.json‎

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{
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"name": "kit-fibonacci",
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"version": "1.0.2",
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"description": "fastfib 使用 JavaScript 尽可能快地来计算斐波那契数列。",
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"main": "lib/index.js",
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"scripts": {
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"prepublishOnly": "npm run lib",
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"lib": "babel src -d lib",
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"test": "node test/fastfib.spec.js && node benchmark"
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},
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"repository": {
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"type": "git",
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"url": "git+https://github.com/jskit/kit-fibonacci.git"
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},
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"keywords": [
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"fibonacci",
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"fastfib",
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"kitjs"
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],
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"author": "cloudyan <1395093509@qq.com>",
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"license": "MIT",
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"bugs": {
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"url": "https://github.com/jskit/kit-fibonacci/issues"
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},
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"homepage": "https://github.com/jskit/kit-fibonacci#readme",
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"dependencies": {},
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"devDependencies": {
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"babel-core": "^6.26.0",
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"babel-eslint": "^8.0.3",
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"babel-plugin-add-module-exports": "^0.2.1",
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"babel-plugin-transform-runtime": "^6.23.0",
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"babel-preset-env": "^1.6.0",
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"babel-preset-es2015": "^6.24.1",
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"babel-preset-stage-2": "^6.24.1",
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"benchmark": "^2.1.4"
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}
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}

‎examples/fibonacci/src/index.js‎

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// import recurse from './recurse'
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// import tail from './tail'
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import iter from './iter';
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export default iter;

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