Permutation Generation in Order | Dataford Interview Questions

Write code to get all possible permutations of a given string in lexicographical order.

Implement permutations_lexicographical(s), returning a list of unique permutation strings in ascending lexicographical order. Repeated characters must not produce duplicate permutations.

Constraints

1 <= len(s) <= 9
s contains printable ASCII characters
The output must contain each unique permutation exactly once
The output must be sorted in lexicographical order

Function Signature

def permutations_lexicographical(s):

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Problem

Write code to get all possible permutations of a given string in lexicographical order.

Implement permutations_lexicographical(s), returning a list of unique permutation strings in ascending lexicographical order. Repeated characters must not produce duplicate permutations.

Constraints

1 <= len(s) <= 9
s contains printable ASCII characters
The output must contain each unique permutation exactly once
The output must be sorted in lexicographical order

Function Signature

def permutations_lexicographical(s):

Your question is Permutation Generation in Order. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.