1077. Kuchiguse (20)

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

  找最大相同后缀，遍历就好

  #include<cstdio>
  #include<cmath>
  #include<algorithm>
  #include<iostream>
  #include<cstring>
  #include<queue>
  #include<vector>
  using namespace std;
  
  int main(){
  	int n;
  	cin>>n;
  	getchar();
  	char s1[1000];
  	gets(s1);
  	int sum=strlen(s1);
  	for(int i=1;i<n;i++){
  		char s2[1000];
  		gets(s2);
  		int cnt=0;
  		for(int j=strlen(s1)-1,k=strlen(s2)-1;j>=0&&k>=0;j--,k--){
  			if(s1[j]==s2[k]){
  				cnt++;
  			}
  			else break;
  		}
  		//strcpy()
  		if(cnt<sum) sum=cnt;
  	}
  	if(sum==0){
  		cout<<"nai";
  	}
  	else{
  		for(int i=strlen(s1)-sum;i<strlen(s1);i++) cout<<s1[i];
  	}
  	return 0;
  }