归档 2015年12月

题目描述：

Given an unsorted array nums, reorder it such that nums[0] < nums[1] > nums[2] < nums[3]....

Example:
(1) Given nums = [1, 5, 1, 1, 6, 4], one possible answer is [1, 4, 1, 5, 1 ...

题目描述：

You are given coins of different denominations and a total amount of money amount. Write a function to compute the fewest number of coins that you need to make up that amount. If that amount of money cannot be ...

下面的JavaScript代码利用HTML5 canvas实现了动态的雪花飘落效果，CPU开销也比较小。

原文链接：http://www.oschina.net/code/snippet_436266_46013

JavaScript代码：

<canvas id="christmasCanvas" style="top: 0px; left: 0px; z-index: 5000; position: fixed; pointer-events: none;" ></canvas>

<script type="text/javascript">
  var snow = function() {
    if(1==1) {
      var ...

题目描述：

Given two arrays of length m and n with digits 0-9 representing two numbers. Create the maximum number of length k <= m + n from digits of the two. The relative order of the digits from the same array ...

题目描述：

There are n bulbs that are initially off. You first turn on all the bulbs. Then, you turn off every second bulb. On the third round, you toggle every third bulb (turning on if it's off or turning off ...