Files
.github
api-server
client
config
curriculum
__fixtures__
challenges
_meta
arabic
chinese
english
01-responsive-web-design
02-javascript-algorithms-and-data-structures
basic-algorithm-scripting
basic-data-structures
basic-javascript
debugging
es6
functional-programming
intermediate-algorithm-scripting
arguments-optional.english.md
binary-agents.english.md
convert-html-entities.english.md
diff-two-arrays.english.md
dna-pairing.english.md
drop-it.english.md
everything-be-true.english.md
make-a-person.english.md
map-the-debris.english.md
missing-letters.english.md
pig-latin.english.md
search-and-replace.english.md
seek-and-destroy.english.md
smallest-common-multiple.english.md
sorted-union.english.md
spinal-tap-case.english.md
steamroller.english.md
sum-all-numbers-in-a-range.english.md
sum-all-odd-fibonacci-numbers.english.md
sum-all-primes.english.md
wherefore-art-thou.english.md
javascript-algorithms-and-data-structures-projects
object-oriented-programming
regular-expressions
03-front-end-libraries
04-data-visualization
05-apis-and-microservices
06-quality-assurance
07-scientific-computing-with-python
08-data-analysis-with-python
09-information-security
10-coding-interview-prep
11-machine-learning-with-python
12-certificates
portuguese
russian
spanish
schema
test
.babelrc
.editorconfig
.npmignore
.travis.yml
CHANGELOG.md
LICENSE.md
comment-dictionary.js
commitizen.config.js
commitlint.config.js
create-challenge-bundle.js
getChallenges.acceptance.test.js
getChallenges.js
getChallenges.test.js
gulpfile.js
lib.js
package-entry.js
package-lock.json
package.json
utils.js
cypress
docs
tools
utils
.editorconfig
.eslintignore
.eslintrc.json
.gitattributes
.gitignore
.gitpod.yml
.node-inspectorrc
.npmrc
.prettierignore
.prettierrc
.snyk
.vcmrc
CODE_OF_CONDUCT.md
CONTRIBUTING.md
Dockerfile.tests
HoF.md
LICENSE.md
README.md
SECURITY.md
change_volumes_owner.sh
crowdin.yml
cypress-install.js
cypress.json
docker-compose-shared.yml
docker-compose.tests.yml
docker-compose.yml
jest.config.js
lerna.json
lighthouserc.js
package-lock.json
package.json
sample.env
Oliver Eyton-Williams bd68b70f3d Feat: hide blocks not challenges ()
* fix: remove isHidden flag from frontmatter

* fix: add isUpcomingChange

Co-authored-by: Ahmad Abdolsaheb <ahmad.abdolsaheb@gmail.com>

* feat: hide blocks not challenges

Co-authored-by: Ahmad Abdolsaheb <ahmad.abdolsaheb@gmail.com>

Co-authored-by: Ahmad Abdolsaheb <ahmad.abdolsaheb@gmail.com>
2020-09-03 15:07:40 -07:00

1.8 KiB

id, title, isRequired, challengeType, forumTopicId
id title isRequired challengeType forumTopicId
a5229172f011153519423690 Sum All Odd Fibonacci Numbers true 5 16084

Description

Given a positive integer num, return the sum of all odd Fibonacci numbers that are less than or equal to num. The first two numbers in the Fibonacci sequence are 1 and 1. Every additional number in the sequence is the sum of the two previous numbers. The first six numbers of the Fibonacci sequence are 1, 1, 2, 3, 5 and 8. For example, sumFibs(10) should return 10 because all odd Fibonacci numbers less than or equal to 10 are 1, 1, 3, and 5.

Instructions

Tests

tests:
  - text: <code>sumFibs(1)</code> should return a number.
    testString: assert(typeof sumFibs(1) === "number");
  - text: <code>sumFibs(1000)</code> should return 1785.
    testString: assert(sumFibs(1000) === 1785);
  - text: <code>sumFibs(4000000)</code> should return 4613732.
    testString: assert(sumFibs(4000000) === 4613732);
  - text: <code>sumFibs(4)</code> should return 5.
    testString: assert(sumFibs(4) === 5);
  - text: <code>sumFibs(75024)</code> should return 60696.
    testString: assert(sumFibs(75024) === 60696);
  - text: <code>sumFibs(75025)</code> should return 135721.
    testString: assert(sumFibs(75025) === 135721);

Challenge Seed

function sumFibs(num) {
  return num;
}

sumFibs(4);

Solution

function sumFibs(num) {
  var a = 1;
  var b = 1;
  var s = 0;
  while (a <= num) {
    if (a % 2 !== 0) {
      s += a;
    }
    a = [b, b=b+a][0];
  }
  return s;
}