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Quicksort chapter javaScript added #770

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@berquist berquist added Chapter This provides a new chapter. (md files are edited) Implementation This provides an implementation for an algorithm. (Code and maybe md files are edited.) labels Oct 16, 2020
@berquist berquist added hacktoberfest-accepted Hacktoberfest The label for all Hacktoberfest related things! labels Oct 27, 2020
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leios commented Nov 4, 2020

Thanks for the chapter! I'll try to do chapter reviews over the weekend!


##### Text

The text of this chapter was written by [James Schloss](https://github.com/leios) and is licensed under the [Creative Commons Attribution-ShareAlike 4.0 International License](https://creativecommons.org/licenses/by-sa/4.0/legalcode).
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I think this could be an instance where it wasn't by the amazing @leios


{% method %}
{% sample lang="js" %}
[import:31-38, lang:"javascript"](Code/javascript/quicksort.js)
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this seems like a restrictive range, why not the whole file?

@@ -33,7 +35,7 @@
* [Physics Solvers](contents/physics_solvers/physics_solvers.md)
* [Verlet Integration](contents/verlet_integration/verlet_integration.md)
* [Quantum Systems](contents/quantum_systems/quantum_systems.md)
* [Split-Operator Method](contents/split-operator_method/split-operator_method.md)
* [Split-Operator Method](contents/split-operator_method/split-operator_method.md)
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unintended whitespace change?

Comment on lines -26 to +29
* [Jarvis March](contents/jarvis_march/jarvis_march.md)
* [Graham Scan](contents/graham_scan/graham_scan.md)
* [Jarvis March](contents/jarvis_march/jarvis_march.md)
* [Graham Scan](contents/graham_scan/graham_scan.md)
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unintended whitespace change?

@@ -15,6 +15,8 @@
* [Sorting and Searching](contents/sorting_and_searching/sorting_and_searching.md)
* [Bubble Sort](contents/bubble_sort/bubble_sort.md)
* [Bogo Sort](contents/bogo_sort/bogo_sort.md)
* [Merge Sort](contents/merge_sort/merge_sort.md)
* [Quick Sort](contents/quick_sort/quick_sort.md)
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not seeing a merge_sort.md file added? is that intentional?

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ntindle commented Aug 28, 2021

[lang: javascript]

@github-actions github-actions bot added the lang: javascript Javascript programming language label Aug 28, 2021
@Amaras Amaras changed the title Quicksort javaScript added Quicksort chapter javaScript added Aug 28, 2021
}

function partition(arr, left, right) {
let middle = Math.floor((right + left) / 2),
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It is good practice to use const instead of let for variables where the value doesn't change. (see let len on line 5 too)

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FYI, I'm not sure how important it is, but it's generally good practice to do something like:

...
  let middle = Math.floor( left + (right - left)/2 ),
...

As this avoids the possibility of overflow (see here).

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leios commented Nov 7, 2021

I realize it's been a year, but we are now willing to merge community chapters into the algorithm archive, so we can work on this if you are still willing to help!

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