Guozhong Shi GZShi

🎯

Focusing

golang/c++/javascript

GZShi / stringifyJSON.js

Created March 19, 2014 03:22

Stringing JSON for stupid browsers

	function stringifyJSON(obj) {
	var keyValuePair = [];

	switch(Object.prototype.toString.call(obj)) {
	case '[object Object]':
	for(var i in obj) {
	if(obj.hasOwnProperty(i)) {
	keyValuePair.push('"' + i + '":' + stringifyJSON(obj[i]));
	}
	}

GZShi / convert.py

Created March 18, 2014 07:40

批量GBK转UTF8

	import os, sys

	def convert(filepath, in_encode = "GBK", out_encode = "UTF8"):
	try:
	in_content = open(filepath).read()
	out_content = in_content.decode(in_encode).encode(out_encode)
	open(filepath, 'w').write(out_content)
	print "[OK] Convert " + filepath
	except:
	print "[ERROR] Convert " + filepath

GZShi / assert.js

Last active August 29, 2015 13:57

	function assert(expectation, fn) {
	var args = Array.prototype.slice.call(arguments, 2);
	var ret = fn.apply(fn, args);

	if(ret === expectation) {
	return ret;
	} else {
	throw new TypeError("调用" + fn.name +
	"函数时，返回值" + ret + "与预期的" + expectation + "不同");
	}

GZShi / benchmark.js

Last active August 29, 2015 13:57

不服跑分。for-loop VS. Array.map VS. Array.every

	function benchmark (times) {
	var index = Math.floor(Math.random()*times);

	function fn (elem, i, array) {
	array[i] = Math.sqrt(array[i]);
	return true;
	}

	var a = [];
	var b = [];

GZShi / function_cache.js

Created February 28, 2014 08:35

Function caching in JavaScript

	function fibonacci (n) {
	if (n < 2) {
	return n;
	} else if (fibonacci.cache)
	fibonacci.cache[n] = fibonacci.cache[n] \|\| fibonacci(n-1) + fibonacci(n-2);
	return fibonacci.cache[n];
	} else {
	return fibonacci(n-1) + fibonacci(n-2);
	}
	}

GZShi / eight_queens_puzzle.js

Last active August 29, 2015 13:56

One solution to the eight queens puzzle in JavaScript

	var solves = [];
	var ans = [];

	function solve_eight_queens (ans, line) {
	if(line >== 8) {
	solves.push(ans);
	return true;
	} else {
	for (var row = 0; row < 8; ++row) {
	var fine = true;

GZShi / checkChineseId.js

Created November 8, 2013 10:24

根据 GB11643-1999 的规则对身份证号码正确性进行校验

	/*
	* 根据GB11643-1999的规则对身份证号码正确性进行校验
	* 如果身份证中的日期信息在系统时间之后，也不能通过校验
	*/
	function checkChineseID(id) {
	id += '';

	if(/^\d{15}(\d\d[0-9X])?$/.test(id)) {
	var year = 0,
	month = 0,

GZShi / RotationMatrix.html

Last active December 26, 2015 00:58

旋转矩阵

GZShi / bezier.js

Last active December 20, 2015 19:19

绘制贝塞尔曲线

	(function(){
	var canvas = document.getElementById('c');
	var ctx = canvas.getContext('2d');

	var mouse = {
	x: 0,
	y: 0,
	fx: 0,
	fy: 0,
	left: false,

GZShi / chrome_arc.html

Created August 7, 2013 14:01

Chrome arc函数采用贝塞尔曲线拟合圆

	<html>
	<head>
	<title>chrome arc</title>
	<meta charset='utf-8'>
	</head>
	<body>
	<canvas id='c' width='2000' height='1500'></canvas>