Given an arraySofnintegers, are there
elementsa,b,c, anddinSsuch thata+b+c+d= target? Find all unique quadruplets in
the array which gives the sum of ...
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其他好文 时间:
2014-06-04 22:44:27
阅读次数:
250
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 amxngrid filled with non-negative
numbers, find a path from top left to bottom right whichminimizesthe sum of all
numbers along its path.Note:Yo...
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其他好文 时间:
2014-06-04 20:57:08
阅读次数:
360
Given a 2D board and a word, find if the word
exists in the grid.The word can be constructed from letters of sequentially
adjacent cell, where "adjace...
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其他好文 时间:
2014-06-04 20:56:34
阅读次数:
343
Given a set of candidate numbers (C) and a
target number (T), find all unique combinations inCwhere the candidate numbers
sums toT.Thesamerepeated num...
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其他好文 时间:
2014-06-04 20:15:09
阅读次数:
289
Given a collection of candidate numbers (C) and
a target number (T), find all unique combinations inCwhere the candidate numbers
sums toT.Each number ...
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其他好文 时间:
2014-06-04 20:14:25
阅读次数:
287
Given an unsorted integer array, find the first
missing positive integer.For
example,Given[1,2,0]return3,and[3,4,-1,1]return2.Your algorithm should ru...
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其他好文 时间:
2014-06-04 20:13:41
阅读次数:
350
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
阅读次数:
199
Given a non-negative number represented as an
array of digits, plus one to the number.The digits are stored such that the most
significant digit is at...
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其他好文 时间:
2014-06-04 19:19:52
阅读次数:
185
题目:在二维坐标系下,有很多个挡板,有两个挡板之间能够积蓄的水的最大面积。如下图所示:思路:我只想到暴力解法,用O(n2)的时间复杂度算出任意两个挡板形成的面积,这必须的过不了。优化解法:O(n).用两个指针
i 和 j 指向整个height[]数组的头尾。if i 指向的高度 决定,因此不会比现在...
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其他好文 时间:
2014-05-29 17:40:09
阅读次数:
312