Write a recursive function for generating all permutations of an input string. Return them as a set. If we're making all permutations for "cat," we take all permutations for "ca" and then put "t" in ...

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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 ...

Recursion and iteration in Python helps one to write a few lines of codes to perform repetitive tasks with a common pattern By Rajkumar Lakshmanamoorthy A computer program consists of line-by-line ...