Randell Dawson e0e6334628
fix(curriculum): Consolidated comments for JavaScript Algorithms and Data Structures challenges - part 3 of 4 (#38264)
* fix: remove example code from challenge seed

* fix: remove declaration from solution

* fix: added sum variable back in

* fix: reverted description back to original version

* fix: added examples to description section

* fix: added complete sentence

Co-Authored-By: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>

* fix: corrected typo

Co-Authored-By: Manish Giri <manish.giri.me@gmail.com>

* fix: reverted to original desc with formatted code

* fix: removed unnecessary code example from description section

Co-Authored-By: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>

* fix: failiing test on iterate through array with for loop

* fix: changed to Only change this line

Co-Authored-By: Manish Giri <manish.giri.me@gmail.com>

Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
Co-authored-by: Manish Giri <manish.giri.me@gmail.com>
Co-authored-by: moT01 <tmondloch01@gmail.com>
2020-03-25 16:07:13 +01:00

1.6 KiB

id, title, challengeType, videoUrl, forumTopicId
id title challengeType videoUrl forumTopicId
56104e9e514f539506016a5c Iterate Odd Numbers With a For Loop 1 https://scrimba.com/c/cm8n7T9 18212

Description

For loops don't have to iterate one at a time. By changing our final-expression, we can count by even numbers. We'll start at i = 0 and loop while i < 10. We'll increment i by 2 each loop with i += 2.
var ourArray = [];
for (var i = 0; i < 10; i += 2) {
  ourArray.push(i);
}

ourArray will now contain [0,2,4,6,8]. Let's change our initialization so we can count by odd numbers.

Instructions

Push the odd numbers from 1 through 9 to myArray using a for loop.

Tests

tests:
  - text: You should be using a <code>for</code> loop for this.
    testString: assert(code.match(/for\s*\(/g).length > 1);
  - text: <code>myArray</code> should equal <code>[1,3,5,7,9]</code>.
    testString: assert.deepEqual(myArray, [1,3,5,7,9]);

Challenge Seed

// Setup
var myArray = [];

// Only change code below this line


After Test

if(typeof myArray !== "undefined"){(function(){return myArray;})();}

Solution

var ourArray = [];
for (var i = 0; i < 10; i += 2) {
  ourArray.push(i);
}
var myArray = [];
for (var i = 1; i < 10; i += 2) {
  myArray.push(i);
}