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 ...

Thinking recursively Let's test whether a sentence is a palindrome. A palindrome string is equal to itself when you reverse all characters. For ex: A man, a plan, a canal—Panama! Go hang a salami, I’m ...

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