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 ...
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其他好文 时间:
2014-05-16 23:18:16
阅读次数:
360
快速排序最坏情况下时间复杂度是O(n*n),但是它平均时间复杂度是O(N*logn),并且常数因子很小,可实现就地排序,所以被作为内排序的常用排序方法.
#include
using namespace std;
void swap(int &i,int &j)
{
int temp=i;
i=j;
j=temp;
}
int partition(int *vector...
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其他好文 时间:
2014-05-15 06:05:35
阅读次数:
254
【题目】
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 linked list.
Input: (2 -> 4 -> 3) + (5 -> 6 -> 4)
Out...
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其他好文 时间:
2014-05-15 05:13:49
阅读次数:
306
Pat1043代码
题目描述:
A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties:
The left subtree of a node contains only nodes with keys less than t...
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其他好文 时间:
2014-05-15 05:09:59
阅读次数:
351
1.ORACLE软件安装到86%时报错,图忘截了。日志如下:
/oracle/u01/app/oracle/product/11.2.0/
INFO: db_1/lib/sysliblist` -R /opt/SUNWcluster/lib -R/export/home/oracle/u01/app/oracle/product/11.2.0/db_1/lib -R /opt/ORCLcl...
分类:
数据库 时间:
2014-05-15 05:00:12
阅读次数:
334
最近一段时间是决定好好把算法大体学一遍了。今天发现了一个有趣的定理:cayley’s theorem:
过n个有标志顶点的树的数目等于n^(n-2)。以4个nodes的树为例,应该是16个没错,然后找了好半天也没有找到能看懂的证明过程。如果有哪位有发现比较易懂的证法,欢迎和我在留言讨论。:)
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其他好文 时间:
2014-05-13 18:25:06
阅读次数:
183
建堆的时间复杂度是O(n),堆排序的时间复杂度是O(NLogN),具体算法如下所示:
#include
using namespace std;
void swap(int &i,int &j)
{
int temp=i;
i=j;
j=temp;
}
void shiftDown(int *A, int start,int len)
{
int temp=A[...
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其他好文 时间:
2014-05-13 13:55:15
阅读次数:
270
Given an array, for example, 246135, an inversion pair is the pair whose first value is larger than its second value according to the sequence from left to right, (2,1) (4,1) (4,3) (6,1) (6,3) (6,5)....
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其他好文 时间:
2014-05-13 08:03:58
阅读次数:
338
暴力出奇迹。。
#include
#include
#include
#include
#include
#include
#include
#include
using namespace std;
#define ll __int64
#define N 42
ll n,m,ans;
ll Gcd(ll x,ll y){
if(x>y)swap(x,y);
while(x){
y%=...
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其他好文 时间:
2014-05-12 23:11:06
阅读次数:
445
Given a linked list, reverse the nodes of a
linked listkat a time and return its modified list.If the number of nodes is not
a multiple ofkthen left-o...
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其他好文 时间:
2014-05-11 18:15:52
阅读次数:
300