Question

Your task is to complete a function
GetArrangements() that returns the
count of all the possible arrangements
of length N that can be derived from the
characters of an input string of length N.
The input string may or may not have
repeated characters. Your function
should handle all the possible cases.
For example,
for the input provided as 15llows:
ABCB
The function should return
12​

Answer 1

Answer:

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