StuPig

// var times = 0;

// 快速排序算法
function quickSort(arr) {
    if (!arr || Object.prototype.toString.call(arr).toLowerCase().indexOf('array') < 0) {
        throw new Error('quickSort(): First arguments must be an Array.');
    }
    if (arr.length <= 1) {
        return arr;
    }

StuPig

// 题目:
//   假设有字符串 'i am a programmer'
//   实现方法全部颠倒，转成 'remmargorp a ma i'

var str = 'i am a programmer';

// 函数式递归调用方法实现
function reverseStrByChar(str) {
    if (!str || Object.prototype.toString.call(str).toLowerCase().indexOf('string') < 0) {
        throw new Error('reverseStrByChar: Invalid argument ' + str);

StuPig

var winston = require('winston');
var fs = require('fs');
var dateUtil = require('date-utils');

var LOGPATH = './log/';
var DOMAIN = 'www.labi.com';
// 测试用对日志文件的切割，所以`maxsize`设的很小
var MAXSIZE = 100;

var latest_ex_filename = null;