| ||||||||||
| Online Judge | Problem Set | Authors | Online Contests | User | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Web Board Home Page F.A.Qs Statistical Charts | Current Contest Past Contests Scheduled Contests Award Contest | |||||||||
Re:为什么dp数组定义在函数里面就RE,定义成全局变量就AC了In Reply To:为什么dp数组定义在函数里面就RE,定义成全局变量就AC了 Posted by:sdlllichao at 2013-09-18 09:45:24 c语言的问题吧,全局变量是存放在堆里面的,函数内的变量是存放在栈里面的,栈的容量远远小于堆
> #include <iostream>
> #include <cstdio>
> #include <cstring>
> #define N 5002
> using namespace std;
> short dp[N][N];
> int main()
> {
> int n;
> while(cin>>n)
> {
> char *str1=new char[n+1];
> char *str2=new char[n+1];
> cin>>str1;
> int i,j;
> for(i=0;i<n;i++)
> str2[i]=str1[n-i-1];
> str2[i]='\0';
> memset(dp,0,sizeof(dp));
> for(i=0;i<n;i++)
> {
> for(j=0;j<n;j++)
> {
> if(str1[i]==str2[j])
> dp[i+1][j+1]=dp[i][j]+1;
> else
> dp[i+1][j+1]=max(dp[i][j+1],dp[i+1][j]);
> }
> }
> cout<<n-dp[n][n]<<endl;
> }
> return 0;
> }
Followed by:
Post your reply here: |
All Rights Reserved 2003-2013 Ying Fuchen,Xu Pengcheng,Xie Di
Any problem, Please Contact Administrator