Given an index k, return the kth row of the Pascal's triangle.
For example, given k = 3,
Return [1,3,3,1].
Note:
Could you optimize your algorithm to use only O(k) extra space?
思路:最简单的方法就是按...
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其他好文 时间:
2014-06-18 12:40:54
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265
题目
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.
Note:
...
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其他好文 时间:
2014-06-18 12:17:57
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179
[self performSelectorOnMainThread:@selector(loadData) withObject:nil waitUntilDone:NO];performSelectorOnMainThread的作用就如其名,是在主线程执行某个selector, 所有的UIKit里...
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其他好文 时间:
2014-06-18 09:14:44
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330
button.png,尺寸为:24x60现在我们把它用作为按钮背景,按钮尺寸是150x50:// 得到view的尺寸CGSize viewSize = self.view.bounds.size;// 初始化按钮UIButton *button = [[UIButton alloc] init];/...
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移动开发 时间:
2014-06-17 23:34:41
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337
Given two sorted integer arrays A and B, merge B into A as one sorted array.
Note:
You may assume that A has enough space (size that is greater or equal to
m + n) to
hold additional ele...
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其他好文 时间:
2014-06-17 23:05:13
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246
题目
Given an array S of n integers, are there elements a, b, c in S such that a + b + c =
0? Find all unique triplets in the array which gives the sum of zero.
Note:
Elements in a tr...
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其他好文 时间:
2014-06-17 22:04:49
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292
ocp 053648.Note the following statements that use flashback technology:1. FLASHBACK TABLE TO SCN ;2. SELECT * FROM AS OF SCN 123456;3.FLASHBACKTABLE.....
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其他好文 时间:
2014-06-17 16:01:01
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220
最简单的不相交集的实现,来自MAW的《数据结构与算法分析》。代码:class DisjSet: def __init__(self, NumSets): self.S = [0 for i in range(NumSets+1)] def SetUnion(self, S,...
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编程语言 时间:
2014-06-17 15:17:56
阅读次数:
265
二叉树的插入与删除,来自Mark Allen Weiss的《数据结构与算法分析》。# Definition for a binary tree nodeclass TreeNode: def __init__(self, x): self.val = x self...
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编程语言 时间:
2014-06-17 14:25:01
阅读次数:
291
- (void)viewDidLoad{ [super viewDidLoad]; #ifdef DEBUG // 设置测试使用的用户名和密码 self.nameText.text = @“xiaoshuai"; self.pwdText.text = @"123"; [self text...
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移动开发 时间:
2014-06-17 13:49:29
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252