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...
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其他好文 时间:
2014-07-10 12:37:21
阅读次数:
189
Given an array of integers, every element appearstwiceexcept for one. Find that single one.Note:Your algorithm should have a linear runtime complexity...
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其他好文 时间:
2014-07-07 23:24:09
阅读次数:
210
Given an array of integers, every element appearsthreetimes except for one. Find that single one.Note:Your algorithm should have a linear runtime comp...
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其他好文 时间:
2014-07-07 22:57:13
阅读次数:
309
【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...
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其他好文 时间:
2014-06-29 22:52:35
阅读次数:
246
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...
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其他好文 时间:
2014-06-27 22:25:10
阅读次数:
443
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...
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其他好文 时间:
2014-06-27 22:24:34
阅读次数:
346
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...
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其他好文 时间:
2014-06-27 10:18:32
阅读次数:
151
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....
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其他好文 时间:
2014-06-27 09:15:12
阅读次数:
196
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:/...
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编程语言 时间:
2014-06-27 08:45:21
阅读次数:
205
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...
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其他好文 时间:
2014-06-27 08:30:30
阅读次数:
202