acm Think Different

 

思想：把所有字母都换成小写之后再找

 

#include <iostream>#include <string>using namespace std;int main(){            string s, sub, t = "think different";            int i, ans;            while (getline(cin, s))            {                    for (i = 0; i < s.length(); i++)                            if (s[i] >= 'A' && s[i] <= 'Z')                                    s[i] += 32;                    for (ans = i = 0; i < s.length(); i++)                    {                            if (i + 14 < s.length())                            {                                    sub = s.substr(i, 15);                                    if (sub == t)                                            ans++;                            }                    }                    cout << ans << endl;            }            return 0;    }