1077 Kuchiguse （20 分）
The Japanese language is notorious for its sentence ending particles. Personal preference of such particles can be considered as a reflection of the speaker's personality. Such a preference is called "Kuchiguse" and is often exaggerated artistically in Anime and Manga. For example, the artificial sentence ending particle "nyan~" is often used as a stereotype for characters with a cat-like personality:
-
Itai nyan~ (It hurts, nyan~)
-
Ninjin wa iyada nyan~ (I hate carrots, nyan~)
Now given a few lines spoken by the same character, can you find her Kuchiguse?
Input Specification:
Each input file contains one test case. For each case, the first line is an integer N (2≤N≤100). Following are N file lines of 0~256 (inclusive) characters in length, each representing a character's spoken line. The spoken lines are case sensitive.
Output Specification:
For each test case, print in one line the kuchiguse of the character, i.e., the longest common suffix of all N lines. If there is no such suffix, write nai.
Sample Input 1:
3
Itai nyan~
Ninjin wa iyadanyan~
uhhh nyan~
Sample Output 1:
nyan~
Sample Input 2:
3
Itai!
Ninjinnwaiyada T_T
T_T
Sample Output 2:
nai思路：
1.题意是，给定n个字符串，输出这n个字符串的最大公共后缀。
2.将所有的字符串逆置，正序比较，直到出现第一个不同的字符为止。
3.使用string的getline方法读入一行。
#include <string>
#include <algorithm>
#include <iostream>
using namespace std;
int main()
{
int n;
cin >> n;
getchar();
string in[n];
for(int i = 0; i < n; i++)
{
getline(cin, in[i]);//读入一行字符串
reverse(in[i].begin(), in[i].end());//将读入的字符串逆转
}
//计算最短的字符串的长度
int min_size = in[0].size();
for(int i = 1; i < n; i++)
if(min_size < in[i].size())
min_size = in[i].size();
int num = 0;//公共后缀的长度
bool flag = true;//标记是否出现非公共字符
for(int i = 0; i < min_size; i++)//从最后一个字符开始比较
{
for(int j = 1; j < n; j++)
{
if(in[j][i] != in[0][i])
{ //出现一对不等的字符
flag = false;
break;
}
}
if(flag)//所有字符串对应位置字符都相同
num++;//公共后缀长度加一
else //出现第一个非公共字符，不再比较
break;
}
if(0 == num)//没有公共后缀
printf("nai");
else
{
while(num--)
printf("%c", in[0][num]);
}
return 0;
}