Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum.Fo...
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其他好文 时间:
2014-07-02 22:34:44
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318
Given a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum.For example:Given the below binary tree andsum =...
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其他好文 时间:
2014-07-02 22:10:42
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262
Given a binary tree, find the maximum path sum.The path may start and end at any node in the tree.For example:Given the below binary tree, 1 ...
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其他好文 时间:
2014-07-02 21:13:05
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170
Given two sorted integer arrays A and B, merge B into A as one sorted array.
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其他好文 时间:
2014-07-02 21:07:20
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149
Given a string s1, we may represent it as a binary tree by partitioning it to two non-empty substrings recursively.
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其他好文 时间:
2014-07-02 10:03:09
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175
766 - Sum of powers
题意:求 转化成 的各系数
思路:在wiki看了伯努利数的性质,
可以推成 。
然后B为伯努利数,有公式,
如此一来就可以去递推求出每项伯努利数了,然后在根据n去通分,求出每一项的答案,中间过程用到了分数的运算。
代码:
#include
#include
long long gcd(l...
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其他好文 时间:
2014-07-02 08:46:49
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339
Accessors
存取方法
All instance variables are private in Objective-C by default, so you should use accessors to get and set values in most cases. There are two syntaxes. This is the traditional 1.x syntax:
OC中所有的实例变量默认是私有的,所以多数情况下你应该使用访问器来获得和设置实例变量的值。访问器有...
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其他好文 时间:
2014-07-02 08:39:04
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231
Rectangle and Circle
Problem Description
Given a rectangle and a circle in the coordinate system(two edges of the rectangle are parallel with the X-axis, and the other two are parallel with the Y...
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其他好文 时间:
2014-07-02 07:29:06
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268
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.
代码如下:
* Definition for singly-linked list.
* struct L...
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其他好文 时间:
2014-07-02 07:23:59
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159
UVA 12714 Two Points Revisited(简单数学题)...
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其他好文 时间:
2014-07-02 06:54:53
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154