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:
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Itai nyan~ (It hurts, nyan~)
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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). 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
注意getline对回车键的读入
#include<bits/stdc++.h> using namespace std; const int maxn=100010; int main(){ int n; scanf("%d\n",&n);//注意:一定要加\n ; 如果发现输出少了,一定要检查是否读入空格 string str,ans; for(int i=0;i<n;i++){ getline(cin,str); int lens=str.length(); reverse(str.begin(),str.end()); if(i==0){ ans=str; } else{ int lena=ans.length(); if(lens<lena){ swap(str,ans); } int len=min(lena,lens); for(int j=0;j<len;j++){ if(str[j]!=ans[j]){ ans=ans.substr(0,j);//左闭右开 break; } } } } reverse(ans.begin(),ans.end()); if(ans.length()>0){ cout<<ans<<endl; } else{ cout<<"nai"<<endl; } return 0; }