题目:Given two binary trees, write a function to
check if they are equal or not.Two binary trees are considered equal if they are
structurally identical...
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其他好文 时间:
2014-05-23 12:40:21
阅读次数:
352
题目:Two elements of a binary search tree (BST) are
swapped by mistake.Recover the tree without changing its structure.Note:A
solution using O(n) space ...
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其他好文 时间:
2014-05-23 11:31:51
阅读次数:
299
1、
??
Balanced Binary Tree
Given a binary tree, determine if it is height-balanced.
For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subt...
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其他好文 时间:
2014-05-23 08:19:19
阅读次数:
282
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a link...
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其他好文 时间:
2014-05-23 07:43:23
阅读次数:
246
指针悬空
指针悬空在我们使用指针的时候很容易被忽视,主要的表现是:指针所指向的内存
释放,指针并没有置为NULL,致使一个不可控制的指针。
#include
#include
int *pointer;
void func()
{
int n=8;
pointer=&n;
printf("pointer point data is %d\n",...
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编程语言 时间:
2014-05-22 09:03:09
阅读次数:
371
信号量和P、V原语由Dijkstra(迪杰斯特拉)提出
信号量
互斥:P、V在同一个进程中
同步:P、V在不同进程中
信号量值含义
S>0:S表示可用资源的个数
S=0:表示无可用资源,无等待进程
S
信号量
struct semaphore
{
int value;
pointer_PCB queue;
}
P原语
P(s)
...
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其他好文 时间:
2014-05-22 07:01:59
阅读次数:
319
题目链接:12123 - Magnetic Train Tracks
题意:给定n个点,求有几个锐角三角形。
思路:和UVA 11529是同类的题,枚举一个做原点,然后剩下点根据这个原点进行极角排序,然后利用two pointer去遍历一遍,找出角度小于90度的锐角,然后扣掉这些得到钝角三角形的个数,然后在用总情况去扣掉钝角就是锐角或直角
代码:
#include
#include
#...
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Web程序 时间:
2014-05-20 14:10:56
阅读次数:
412
戳我去解题Given two binary strings, return their sum
(also a binary string).For example,a ="11"b
="1"Return"100".分析:高精度加法,只是将10进制的高精度加法 换成了 2进制的高精度加法首先将 两个...
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其他好文 时间:
2014-05-20 11:21:52
阅读次数:
224
戳我去解题Given two binary trees, write a function to
check if they are equal or not.Two binary trees are considered equal if they are
structurally identic...
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其他好文 时间:
2014-05-20 10:09:37
阅读次数:
201
戳我去解题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.分析:直...
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其他好文 时间:
2014-05-20 08:52:09
阅读次数:
277