Files
freeCodeCamp/curriculum/challenges/english/08-coding-interview-prep/project-euler/problem-56-powerful-digit-sum.english.md
Kristofer Koishigawa 6cfd0fc503 fix: improve Project Euler descriptions, challenge seeds, and test cases (#38016)
* fix: improve Project Euler descriptions and test case

Improve formatting of Project Euler test descriptions. Also add poker hands array and new test case for problem 54

* feat: add typeof tests and gave functions proper names for first 100 challenges

* fix: continue fixing test descriptions and adding "before test" sections

* fix: address review comments

* fix: adjust grids in 18 and 67 and fix some text that reference files rather than the given arrays

* fix: implement bug fixes and improvements from review

* fix: remove console.log statements from seed and solution
2020-02-28 06:39:47 -06:00

1.2 KiB

id, challengeType, title, forumTopicId
id challengeType title forumTopicId
5900f3a41000cf542c50feb7 5 Problem 56: Powerful digit sum 302167

Description

A googol (10100) is a massive number: one followed by one-hundred zeros; 100100 is almost unimaginably large: one followed by two-hundred zeros. Despite their size, the sum of the digits in each number is only 1.

Considering natural numbers of the form, ab, where a, b < 100, what is the maximum digital sum?

Instructions

Tests

tests:
  - text: <code>powerfulDigitSum()</code> should return a number.
    testString: assert(typeof powerfulDigitSum() === 'number');
  - text: <code>powerfulDigitSum()</code> should return 972.
    testString: assert.strictEqual(powerfulDigitSum(), 972);

Challenge Seed

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

powerfulDigitSum();

Solution

// solution required