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

Created by Jean-Marie Sainthillier

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After Problem 2319.
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?

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Last Solution submitted on Nov 29, 2025

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GeeTwo on 8 Aug 2022

Instructions are incorrect. The instructions ask for pandigitals between the bounds, but at least the lower bound must be included to pass some of the tests.

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

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

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Last 200 Solutions

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Problem Recent Solvers66

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More from this Author43

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