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[LeetCode] Search a 2D Matrix
Write an efficient algorithm that searches for a value in anmxnmatrix. This matrix has the following properties:Integers in each row are sorted from l...
分类:其他好文   时间:2014-07-10 12:37:21    阅读次数:189
[LeetCode] Single Number
Given an array of integers, every element appearstwiceexcept for one. Find that single one.Note:Your algorithm should have a linear runtime complexity...
分类:其他好文   时间:2014-07-07 23:24:09    阅读次数:210
[LeetCode] Single Number II
Given an array of integers, every element appearsthreetimes except for one. Find that single one.Note:Your algorithm should have a linear runtime comp...
分类:其他好文   时间:2014-07-07 22:57:13    阅读次数:309
leetCode: Single Number II [137]
【题目】 Given an array of integers, every element appears three times except for one. Find that single one. Note: Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory? 【题意】 给定一个整数以外,其中除了一个整数只出现一次以外...
分类:其他好文   时间:2014-06-29 22:52:35    阅读次数:246
Leetcode: Search for a Range
Given a sorted array of integers, find the starting and ending position of a given target value.Your algorithm's runtime complexity must be in the ord...
分类:其他好文   时间:2014-06-27 22:25:10    阅读次数:443
Leetcode: First Missing Positive
Given an unsorted integer array, find the first missing positive integer.For example,Given [1,2,0] return 3,and [3,4,-1,1] return 2.Your algorithm sho...
分类:其他好文   时间:2014-06-27 22:24:34    阅读次数:346
LeetCode Length of Last Word
Given a string s consists of upper/lower-case alphabets and empty space characters ' ', return the length of last word in the string. If the last word does not exist, return 0. Note: A word is d...
分类:其他好文   时间:2014-06-27 10:18:32    阅读次数:151
Leetcode Validate Binary Search Tree
Given a binary tree, determine if it is a valid binary search tree (BST). Assume a BST is defined as follows: The left subtree of a node contains only nodes with keys less than the node's key....
分类:其他好文   时间:2014-06-27 09:15:12    阅读次数:196
有关科学计算方面的python解决
在科学计算方面,一般认为matlab是一个超强的东西,此外还有R。 至于某种语言来说,一般都要讲究一些特别的算法,包括但不限于: 矩阵方面的计算指数计算对数计算多项式运算各类方程求解 总之,只要是数学问题,在python里面,可以使用以下任何一个来解决 NumPySciPymatplotlibETS 顺便推荐一本书《用Python做科學計算》。地址是:http:/...
分类:编程语言   时间:2014-06-27 08:45:21    阅读次数:205
First Missing Positive
题目 Given an unsorted integer array, find the first missing positive integer. For example, Given [1,2,0] return 3, and [3,4,-1,1] return 2. Your algorithm should run in O(n) time and u...
分类:其他好文   时间:2014-06-27 08:30:30    阅读次数:202
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