freeCodeCamp/factorialize-a-number.english.md at ed4bbfdbcd8b1cce441c79931a6b7b93d043739b

gaspersic/freeCodeCamp

Fork 0

Files

.github

api-server

client

config

curriculum

challenges

_meta

arabic

chinese

english

01-responsive-web-design

02-javascript-algorithms-and-data-structures

basic-algorithm-scripting

boo-who.english.md

chunky-monkey.english.md

confirm-the-ending.english.md

convert-celsius-to-fahrenheit.english.md

factorialize-a-number.english.md

falsy-bouncer.english.md

find-the-longest-word-in-a-string.english.md

finders-keepers.english.md

mutations.english.md

repeat-a-string-repeat-a-string.english.md

return-largest-numbers-in-arrays.english.md

reverse-a-string.english.md

slice-and-splice.english.md

title-case-a-sentence.english.md

truncate-a-string.english.md

where-do-i-belong.english.md

basic-data-structures

basic-javascript

debugging

es6

functional-programming

intermediate-algorithm-scripting

javascript-algorithms-and-data-structures-projects

object-oriented-programming

regular-expressions

03-front-end-libraries

04-data-visualization

05-apis-and-microservices

06-information-security-and-quality-assurance

08-coding-interview-prep

09-certificates

portuguese

russian

spanish

formattingConversion

math-challenges

requiresTests

schema

test

.babelrc

.editorconfig

.npmignore

.travis.yml

CHANGELOG.md

LICENSE.md

commitizen.config.js

commitlint.config.js

create-challenge-bundle.js

getChallenges.js

gulpfile.js

index.js

lib.js

md-translation.js

package-entry.js

package-lock.json

package.json

utils.js

docs

guide

mock-guide

search-indexing

tools

.editorconfig

.eslintignore

.eslintrc.json

.gitattributes

.gitignore

.node-inspectorrc

.prettierrc

.snyk

.travis.yml

.vcmrc

CODE_OF_CONDUCT.md

CONTRIBUTING.md

Dockerfile.tests

LICENSE.md

README.french.md

README.italian.md

README.korean.md

README.md

SECURITY.md

azure-pipelines.yml

change_volumes_owner.sh

docker-compose-shared.yml

docker-compose.tests.yml

docker-compose.yml

lerna.json

libcimp_index_js.patch

package-lock.json

package.json

patch_npm_and_install.sh

sample.env

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

2.0 KiB

Raw Blame History

id, title, isRequired, challengeType

id	title	isRequired	challengeType
a302f7aae1aa3152a5b413bc	Factorialize a Number	true	5

Description

Return the factorial of the provided integer. If the integer is represented with the letter n, a factorial is the product of all positive integers less than or equal to n. Factorials are often represented with the shorthand notation n! For example: 5! = 1 * 2 * 3 * 4 * 5 = 120 Only integers greater than or equal to zero will be supplied to the function. Remember to use Read-Search-Ask if you get stuck. Write your own code.

Instructions

Tests

tests:
  - text: <code>factorialize(5)</code> should return a number.
    testString: assert(typeof factorialize(5) === 'number', '<code>factorialize(5)</code> should return a number.');
  - text: <code>factorialize(5)</code> should return 120.
    testString: assert(factorialize(5) === 120, '<code>factorialize(5)</code> should return 120.');
  - text: <code>factorialize(10)</code> should return 3628800.
    testString: assert(factorialize(10) === 3628800, '<code>factorialize(10)</code> should return 3628800.');
  - text: <code>factorialize(20)</code> should return 2432902008176640000.
    testString: assert(factorialize(20) === 2432902008176640000, '<code>factorialize(20)</code> should return 2432902008176640000.');
  - text: <code>factorialize(0)</code> should return 1.
    testString: assert(factorialize(0) === 1, '<code>factorialize(0)</code> should return 1.');

Challenge Seed

function factorialize(num) {
  return num;
}

factorialize(5);

Solution

function factorialize(num) {
  return num < 1 ? 1 : num * factorialize(num - 1);
}

factorialize(5);

2.0 KiB Raw Blame History