POJ 2192 Zipper
2014-07-23 18:11
225 查看
Zipper
Description
Given three strings, you are to determine whether the third string can be formed by combining the characters in the first two strings. The first two strings can be mixed arbitrarily, but each must stay in its original order.
For example, consider forming "tcraete" from "cat" and "tree":
String A: cat
String B: tree
String C: tcraete
As you can see, we can form the third string by alternating characters from the two strings. As a second example, consider forming "catrtee" from "cat" and "tree":
String A: cat
String B: tree
String C: catrtee
Finally, notice that it is impossible to form "cttaree" from "cat" and "tree".
Input
The first line of input contains a single positive integer from 1 through 1000. It represents the number of data sets to follow. The processing for each data set is identical. The data sets appear on the following lines, one data set per line.
For each data set, the line of input consists of three strings, separated by a single space. All strings are composed of upper and lower case letters only. The length of the third string is always the sum of the lengths of the first two strings. The first two
strings will have lengths between 1 and 200 characters, inclusive.
Output
For each data set, print:
Data set n: yes
if the third string can be formed from the first two, or
Data set n: no
if it cannot. Of course n should be replaced by the data set number. See the sample output below for an example.
Sample Input
Sample Output
#include <iostream>
#include <string.h>
#include <stdio.h>
using namespace std;
int main()
{
int n;
scanf("%d", &n);
int k;
for(k=1;k<=n;k++)
{
bool flag=true;
bool dp[205][205];
memset(dp,0,sizeof(dp));
char a[201],b[201],c[402];
//cin>>a>>b>>c;
scanf("%s %s %s", a, b, c);
//cout<<"Data set "<<c<<": ";
printf("Data set %d: ", k);
int lena,lenb,lenstr;
lena=strlen(a);
lenb=strlen(b);
int i,j;
dp[0][0]=1;
for(i=0;i<=lena;i++)
for(j=0;j<=lenb;j++)
{
if(i>0&&dp[i-1][j]==1&&c[i+j-1]==a[i-1])
dp[i][j]=1;
if(j>0&&dp[i][j-1]==1&&c[i+j-1]==b[j-1])
dp[i][j]=1;
}
if(dp[lena][lenb]==true)
//cout<<"yes"<<endl;
printf("yes\n");
else
//cout<<"no"<<endl;
printf("no\n");
}
return 0;
}
/*
3 cat tree tcraete cat tree catrtee cat tree cttaree
*/
详细讲解 见 http://www.ahathinking.com/archives/173.html
Time Limit: 1000MS | Memory Limit: 65536K | |
Total Submissions: 15938 | Accepted: 5651 |
Given three strings, you are to determine whether the third string can be formed by combining the characters in the first two strings. The first two strings can be mixed arbitrarily, but each must stay in its original order.
For example, consider forming "tcraete" from "cat" and "tree":
String A: cat
String B: tree
String C: tcraete
As you can see, we can form the third string by alternating characters from the two strings. As a second example, consider forming "catrtee" from "cat" and "tree":
String A: cat
String B: tree
String C: catrtee
Finally, notice that it is impossible to form "cttaree" from "cat" and "tree".
Input
The first line of input contains a single positive integer from 1 through 1000. It represents the number of data sets to follow. The processing for each data set is identical. The data sets appear on the following lines, one data set per line.
For each data set, the line of input consists of three strings, separated by a single space. All strings are composed of upper and lower case letters only. The length of the third string is always the sum of the lengths of the first two strings. The first two
strings will have lengths between 1 and 200 characters, inclusive.
Output
For each data set, print:
Data set n: yes
if the third string can be formed from the first two, or
Data set n: no
if it cannot. Of course n should be replaced by the data set number. See the sample output below for an example.
Sample Input
3 cat tree tcraete cat tree catrtee cat tree cttaree
Sample Output
Data set 1: yes Data set 2: yes Data set 3: no
#include <iostream>
#include <string.h>
#include <stdio.h>
using namespace std;
int main()
{
int n;
scanf("%d", &n);
int k;
for(k=1;k<=n;k++)
{
bool flag=true;
bool dp[205][205];
memset(dp,0,sizeof(dp));
char a[201],b[201],c[402];
//cin>>a>>b>>c;
scanf("%s %s %s", a, b, c);
//cout<<"Data set "<<c<<": ";
printf("Data set %d: ", k);
int lena,lenb,lenstr;
lena=strlen(a);
lenb=strlen(b);
int i,j;
dp[0][0]=1;
for(i=0;i<=lena;i++)
for(j=0;j<=lenb;j++)
{
if(i>0&&dp[i-1][j]==1&&c[i+j-1]==a[i-1])
dp[i][j]=1;
if(j>0&&dp[i][j-1]==1&&c[i+j-1]==b[j-1])
dp[i][j]=1;
}
if(dp[lena][lenb]==true)
//cout<<"yes"<<endl;
printf("yes\n");
else
//cout<<"no"<<endl;
printf("no\n");
}
return 0;
}
/*
3 cat tree tcraete cat tree catrtee cat tree cttaree
*/
详细讲解 见 http://www.ahathinking.com/archives/173.html
相关文章推荐
- POJ 2192 Zipper
- poj 2192 Zipper (DP)
- poj2192——Zipper(动态规划)
- POJ 2192-zipper(动态规划)
- poj 2192 Zipper
- poj_2192Zipper
- POJ-2192-Zipper
- POJ 2192 Zipper
- DFS poj 2192 zipper
- poj 2192 Zipper
- POJ---2192-Zipper
- 【动态规划】POJ - 2192 Zipper
- poj 2192 Zipper
- Poj 2192 Zipper
- 【POJ 2192 Zipper】+ 贪心 + 字符匹配
- POJ-2192 Zipper-顺序合成串匹配
- POJ 2192 Zipper
- POJ 2192 Zipper
- hdu 1501 || poj 2192 Zipper(搜索:DFS)
- HDU-1501 (POJ-2192) Zipper (DFS||DP)