javascript - Shortest code to reverse array - Stack Overflow

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I need to find the shortest code for reversing an array and at the moment I have this:

weirdReverse=a=>a.sort(()=>1)

This is a codewars challenge and the length of this is 29 bytes. I need to have a length <=28 so I need to remove 1 byte and I can't change this part:

weirdReverse=a=>a

And I can't use reverse().

I need to find the shortest code for reversing an array and at the moment I have this:

weirdReverse=a=>a.sort(()=>1)

This is a codewars challenge and the length of this is 29 bytes. I need to have a length <=28 so I need to remove 1 byte and I can't change this part:

weirdReverse=a=>a

And I can't use reverse().

• javascript
• arrays
• sorting
• reverse

Share Improve this question Follow edited May 22, 2018 at 22:32 Patrick Roberts 52k1010 gold badges117117 silver badges163163 bronze badges asked May 22, 2018 at 22:07 MariuszMariusz 14922 silver badges88 bronze badges 4

• 1 How is sort order determined, here? Couldn't you just leave out the ()=>1? – Daedalus Commented May 22, 2018 at 22:11
• Sorry im dumb , i need to reverse it i just look on sort() and i write i need to sort it , description is changed now – Mariusz Commented May 22, 2018 at 22:13
• 3 array.reverse() .. am I missing something?? – mhodges Commented May 22, 2018 at 22:14
• didnt write it too ... i can't use reverse() – Mariusz Commented May 22, 2018 at 22:15

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2 Answers 2

Sorted by: Reset to default 9

You can golf one byte off your anonymous arrow function by specifying an unused parameter instead of () to indicate no named parameters, bringing the total down to 28 bytes:

weirdReverse=a=>a.sort(_=>1)

You can use a named parameter instead of braces, like so:

weirdReverse=a=>a.sort(b=>1)

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