gaspersic/freeCodeCamp
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Modified the sort function (#25978)

Browse Source 
Modification in the sort function to implement the better practice of returning 0 for the same elements. Not implementing the practice can break the function in new browsers.
This commit is contained in:
Utkarsh Raj Singh
2018-10-23 04:01:24 +05:30
committed by Aditya
parent e3059ee4c8
commit 02206a2123
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
curriculum/challenges/english/02-javascript-algorithms-and-data-structures/functional-programming/sort-an-array-alphabetically-using-the-sort-method.english.md
View File

@@ -8,7 +8,7 @@ challengeType: 1
<section id='description'> <section id='description'>
The <code>sort</code> method sorts the elements of an array according to the callback function. The <code>sort</code> method sorts the elements of an array according to the callback function.
For example: For example:
<blockquote>function ascendingOrder(arr) {<br>&nbsp;&nbsp;return arr.sort(function(a, b) {<br>&nbsp;&nbsp;&nbsp;&nbsp;return a - b;<br>&nbsp;&nbsp;});<br>}<br>ascendingOrder([1, 5, 2, 3, 4]);<br>// Returns [1, 2, 3, 4, 5]<br><br>function reverseAlpha(arr) {<br>&nbsp;&nbsp;return arr.sort(function(a, b) {<br>&nbsp;&nbsp;&nbsp;&nbsp;return a < b;<br>&nbsp;&nbsp;});<br>}<br>reverseAlpha(['l', 'h', 'z', 'b', 's']);<br>// Returns ['z', 's', 'l', 'h', 'b']</blockquote> <blockquote>function ascendingOrder(arr) {<br>&nbsp;&nbsp;return arr.sort(function(a, b) {<br>&nbsp;&nbsp;&nbsp;&nbsp;return a - b;<br>&nbsp;&nbsp;});<br>}<br>ascendingOrder([1, 5, 2, 3, 4]);<br>// Returns [1, 2, 3, 4, 5]<br><br>function reverseAlpha(arr) {<br>&nbsp;&nbsp;return arr.sort(function(a, b) {<br>&nbsp;&nbsp;&nbsp;&nbsp;return a === b ? 0 : a < b ? : 1 : -1;<br>&nbsp;&nbsp;});<br>}<br>reverseAlpha(['l', 'h', 'z', 'b', 's']);<br>// Returns ['z', 's', 'l', 'h', 'b']</blockquote>
Note: It's encouraged to provide a callback function to specify how to sort the array items. JavaScript's default sorting method is by string Unicode point value, which may return unexpected results. Note: It's encouraged to provide a callback function to specify how to sort the array items. JavaScript's default sorting method is by string Unicode point value, which may return unexpected results.
</section> </section>