String

CheatSheet

• always remember to take care of an empty string.

• Substring constructor

  int begin, length;
  sub_string = s.substr(begin, length);
  

• Reverse a string

  sort(string.begin(), string.begin()+length);
  

• Note the char stuff

  string s;
  char c = s[i];
  // it is wrong to write c == " "
  if ( c == ' ' ) cout << "It is a space.\n" << endl;