最长公共字串:字符串截取,查找
include<bits/stdc++.h>
using namespace std;
int main()
{
string a ,b ,c;
cin >> a >>b;
int len =0 ;
for(int i=0;i<a.length();i++) { for(int j=a.length()-i; j>=2;j--) { if(b.find(a.substr(i,j)) != -1 && a.substr(i,j).length() >= len) { len = a.substr(i,j).length() ; } } } cout << len <<endl; return 0;
}