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LeetCode: Remove Duplicates from Sorted Array [025]
【题目】 Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length. Do not allocate extra space for another array, you must do this in place with constant memory. For example, Given input array A ...
分类:其他好文   时间:2014-05-18 18:25:19    阅读次数:272
LeetCode: Remove Element [026]
【题目】 Given an array and a value, remove all instances of that value in place and return the new length. The order of elements can be changed. It doesn't matter what you leave beyond the new length. 【题意】 删除数组中指定的值。不关心在新数组的后面即数组尾部留下了什么值。 【思路】 思路同Remo...
分类:其他好文   时间:2014-05-18 14:53:56    阅读次数:208
看看PHP迭代器的内部执行过程
下面我们来了解如何实现一个自定义的迭代器,然后再开始慢慢理解迭代器的内部工作原理。先来看一个官方的例子: <?php class myIterator implements Iterator { private $position = 0; private $array = array( "first_element", "second_element", "last_element", );...
分类:Web程序   时间:2014-05-18 13:58:23    阅读次数:404
[LeetCode]4Sum
4Sum Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target? Find all unique quadruplets in the array which gives the sum of target....
分类:其他好文   时间:2014-05-18 13:49:09    阅读次数:306
LeetCode: Reverse Nodes in k-Group [024]
【题目】 Given a linked list, reverse the nodes of a linked list k at a time and return its modified list. If the number of nodes is not a multiple of k then left-out nodes in the end should remain as it is. You may not alter the values in the nodes, only n...
分类:其他好文   时间:2014-05-18 10:22:34    阅读次数:367
LeetCode:Evaluate Reverse Polish Notation
题意:            Evaluate the value of an arithmetic expression in Reverse Polish Notation.        Valid operators are +, -, *, /. Each operand may be an integer or another expression.        So...
分类:其他好文   时间:2014-05-18 08:09:15    阅读次数:190
实现精灵沿着圆形轨迹运动
Point pos(100, 100); //start point m_animSprite->setPosition(pos); int count = 8; float radius = 50.f; float angle = 360.f/count; auto array = PointArray::create(count + 1); Point pt0(r...
分类:其他好文   时间:2014-05-18 07:02:31    阅读次数:250
LeetCode:Reverse Words in a String
题目: Given an input string, reverse the string word by word. For example, Given s = "the sky is blue", return "blue is sky the". Clarification: What constitutes a word? A sequence of non-spa...
分类:其他好文   时间:2014-05-18 04:12:07    阅读次数:198
【LeetCode】Longest Consecutive Sequence
Given an unsorted array of integers, find the length of the longest consecutive elements sequence.For example,Given[100, 4, 200, 1, 3, 2],The longest ...
分类:其他好文   时间:2014-05-18 01:52:45    阅读次数:317
Python sorted
sorted函数:iterable:是可迭代类型;cmp:用于比较的函数,比较什么由key决定,有默认值,迭代集合中的一项;key:用列表元素的某个属性和函数进行作为关键字,有默认值,迭代集合中的一项;reverse:排序规则. reverse = True 或者 reverse = False,有...
分类:编程语言   时间:2014-05-17 23:36:24    阅读次数:511
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