If we're making all permutations for "cat," we take all permutations for "ca" and then put "t" in each possible position in each of those permutations. We use this approach recursively: # Recursive ...

Python Differences The Python version of the solution uses the built-in itertools.permutations function to generate all permutations of the input, which is more efficient and concise than the ...

A recursive approach (which is what I would use) would involve breaking the problem into isomorphic subproblems: to find all permutations of a string, find all permutations of the string without a ...