freeCodeCamp/problem-213-flea-circus.english.md at 81a0c0c8e07a6c3a4f99228a8af10967fa0c53d9

Valeriy 79d9012432 fix(curriculum): quotes in tests (#18828 )

* fix(curriculum): tests quotes

* fix(curriculum): fill seed-teardown

* fix(curriculum): fix tests and remove unneeded seed-teardown

2018-10-20 23:32:47 +05:30

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id, challengeType, title

id	challengeType	title
5900f4411000cf542c50ff54	5	Problem 213: Flea Circus

Description

A 30×30 grid of squares contains 900 fleas, initially one flea per square. When a bell is rung, each flea jumps to an adjacent square at random (usually 4 possibilities, except for fleas on the edge of the grid or at the corners).

What is the expected number of unoccupied squares after 50 rings of the bell? Give your answer rounded to six decimal places.

Instructions

Tests

tests:
  - text: <code>euler213()</code> should return 330.721154.
    testString: assert.strictEqual(euler213(), 330.721154, '<code>euler213()</code> should return 330.721154.');

Challenge Seed

function euler213() {
  // Good luck!
  return true;
}

euler213();

Solution

// solution required

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