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id	challengeType	title	forumTopicId
5900f38e1000cf542c50fea1	5	Problem 34: Digit factorials	301998

Description

145 is a curious number, as 1! + 4! + 5! = 1 + 24 + 120 = 145.

Find the numbers and the sum of the numbers which are equal to the sum of the factorial of their digits.

Note: as 1! = 1 and 2! = 2 are not sums they are not included.

Instructions

Tests

tests:
  - text: <code>digitFactorial()</code> should return an object.
    testString: assert.typeOf(digitFactorial(), 'object');
  - text: |
      <code>digitFactorial()</code> should return { sum: 40730, numbers: [145, 40585] }.      
    testString: |
      assert.deepEqual(digitFactorial(), { sum: 40730, numbers: [145, 40585] });

Challenge Seed

function digitFactorial() {

  var sum = 0;
  var numbers = [];
  return { sum, numbers };
}

digitFactorial();

Solution

// solution required

1.1 KiB Raw Blame History