Problem 2320. Pandigital number n°2 (Inspired by Project Euler 32)

An n-digit number is pandigital if it makes use of all the digits 1 to n exactly ONCE.
For example, the 5-digit number 15234, is 1 through 5 pandigital.
Find the number of pandigital numbers in a given interval [xlower,xupper] (inclusive if it is not explicit enough).
The test suite is simple here, but how to compute this number with BIG interval (pandigital number length > 7) in Cody time?
For example, between 58755 and 99899923?

Solution Stats

52.94% Correct | 47.06% Incorrect
Last Solution submitted on May 04, 2024

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