Givennnon-negative integersa1,a2, ...,an, where
each represents a point at coordinate (i,ai).nvertical lines are drawn such that
the two endpoints of ...
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其他好文 时间:
2014-06-04 21:09:33
阅读次数:
307
Given two numbers represented as strings,
return multiplication of the numbers as a string.Note: The numbers can be
arbitrarily large and are non-nega...
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其他好文 时间:
2014-06-04 20:19:04
阅读次数:
313
Given two wordsword1andword2, find the minimum
number of steps required to convertword1toword2. (each operation is counted as 1
step.)You have the fol...
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其他好文 时间:
2014-06-04 20:12:15
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199
Given a strings1, we may represent it as a
binary tree by partitioning it to two non-empty substrings recursively.Below is
one possible representation...
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其他好文 时间:
2014-06-04 20:11:38
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303
Given two integersnandk, return all possible
combinations ofknumbers out of 1 ...n.For example,Ifn= 4 andk= 2, a solution
is:[ [2,4], [3,4], [2,3], [1...
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其他好文 时间:
2014-06-04 20:02:13
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228
Then-queens puzzle is the problem of
placingnqueens on ann×nchessboard such that no two queens attack each
other.Given an integern, return all distinc...
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其他好文 时间:
2014-06-04 20:00:47
阅读次数:
206
Merge two sorted linked lists and return it as
a new list. The new list should be made by splicing together the nodes of the
first two lists./***Defin...
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其他好文 时间:
2014-06-04 19:23:45
阅读次数:
243
Given two binary strings, return their sum
(also a binary string).For example,a ="11"b
="1"Return"100".classSolution{public:stringaddBinary(stringa,st...
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其他好文 时间:
2014-06-04 19:23:09
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235
The gray code is a binary numeral system where
two successive values differ in only one bit.Given a non-negative
integernrepresenting the total number...
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其他好文 时间:
2014-06-04 18:58:39
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277
题意大概是给出一个数列num,和一个目标数target,然后要找出数列中的两个数,使得这两个数之和等于目标数,输出这两个数的下标值(从1开始算)。
一个比较暴力的方法是用一个二重循环直接遍历序列,在第一重循环中找到a,在第二重循环中找到b,使得a+b=target,这种做法的时间复杂度是O(n^2....
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其他好文 时间:
2014-05-29 21:01:06
阅读次数:
307