not really agree with the answer. how about this: bool OneEdit(string a, string b) { if (abs(int(a.size()-b.size()))>1) return false; int i=0; for (;ib.size()) return a.substr(i+1)==b.substr(i); else if (a.size()

You can solve it via the regular method. Check if there is a character mismatch and if there is then go ahead in the loop and if another mismatch is found you return false. You have to consider some edge cases such as different length of strings. Easier way to do it is : Psuedocode boolean oneEditAway(String string1,String string2) for(int i =0;i