Rotate a string in c++?

Question

I\'m looking for a way to rotate a string in c++. I spend all of my time in python, so my c++ is very rusty.

Here is what I want it to do: if I have a strin

Answer 1

Here's a solution that "floats" the first character to the end of the string, kind of like a single iteration of bubble sort.

#include 

string rotate(string s) {
  for (int i = 1; i < s.size(); i++)
    swap(s[i-1], s[i]);
  return s;
}

if you want the function to rotate the string in-place:

#include 

void rotate(string &s) {
  for (int i = 1; i < s.size(); i++)
    swap(s[i-1], s[i]);
}