freeCodeCamp/problem-178-step-numbers.english.md at 92377cf71af628cb5ea6b28ff7d6fa66a9b52449

mrugesh 22afc2a0ca feat(learn): python certification projects (#38216 )

Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
Co-authored-by: Kristofer Koishigawa <scissorsneedfoodtoo@gmail.com>
Co-authored-by: Beau Carnes <beaucarnes@gmail.com>

2020-05-27 13:19:08 +05:30

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id, challengeType, isHidden, title, forumTopicId

id	challengeType	isHidden	title	forumTopicId
5900f41e1000cf542c50ff31	5	false	Problem 178: Step Numbers	301813

Description

Consider the number 45656. It can be seen that each pair of consecutive digits of 45656 has a difference of one. A number for which every pair of consecutive digits has a difference of one is called a step number. A pandigital number contains every decimal digit from 0 to 9 at least once.

How many pandigital step numbers less than 1040 are there?

Instructions

Tests

tests:
  - text: <code>euler178()</code> should return 126461847755.
    testString: assert.strictEqual(euler178(), 126461847755);

Challenge Seed

function euler178() {
  // Good luck!
  return true;
}

euler178();

Solution

// solution required

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