[Leetcode] Factor Combinations 因数组合 Factor CombinationsNumbers can be regarded as product of its factors. For example,8 = 2 x 2 x 2; = 2 x 4.Write a functi
arguments.callee 一道面试题：有一个 n = 5 不用for 循环 返回[1,2,3,4,5]数组 function arr(n){var list = [];return (function(){list.unshift(n);n --;if (n !==
Permutations(46) Permutations Given a collection of distinct numbers, return all possible permutations. For example, [1,2,3] have the fol
Subsets Subsets Given a set of distinct integers, nums, return all possible subsets. Note: Elements in a subset must be in non-d
Combination Sum Combination SumGiven a set of candidate numbers (C) and a target number (T), find allunique combinations in C where the
PHP foreach 一点细节 //非正常function getSonIDs(&$list, $fid = 0){ static $ids = array(); foreach($list as $id => $pid){ if($pid ==
巧用SASS之如何遍历n个子元素并为其设置属性 最近在新项目中引入了 SASS 来编写样式代码，心想既然用到了这种高端货，就要用得巧用得妙，不能单纯地只是把常用属性定义成变量或定义重用的代码块等等。因此在编写样式时，都要时刻提醒自己是不是可以巧用SASS来解决一些问题。这次遇到的需求是，
[Leetcode] Pascal's Triangle II 杨辉三角 Pascal's Triangle II Given an index k, return the kth row of the Pascal's triangle. For example, given k = 3, Return [1,
