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yashp1196
Frequent Visitor

Reverse an Array

Does anyone how to reverse an array?

Ex. [Alert 4, Alert 3, Alert 2, Alert 1] -> [Alert 1, Alert 2, Alert 3, Alert 4] 

 

1 ACCEPTED SOLUTION

Accepted Solutions
Rhiassuring
Community Champion
Community Champion

Hi there, 

 

You can use an Excel script to do that - that would be the most efficient way.  Paul Murana walks through that here, in his "Array Reverse" script.

https://www.tachytelic.net/2021/03/power-automate-sort-array/

If you're not into that, this works too:

 

Rhiassuring_0-1656739486565.png

 

1. Create a new array (I called mine arrBackwards)
2. Use an "Apply to Each" and point it at your original collection.

3. Get the last item in the Forwards array:  last(variables('arrForwards'))

4. Add it to the Backwards array.

5. Remove the last item from the Forwards array. take(variables('arrForwards'),add(length(variables('arrForwards')),-1))
6. Set the Forwards array to the previous compose so we reference that going forward.

 

 

That did the trick.

 

View solution in original post

1 REPLY 1
Rhiassuring
Community Champion
Community Champion

Hi there, 

 

You can use an Excel script to do that - that would be the most efficient way.  Paul Murana walks through that here, in his "Array Reverse" script.

https://www.tachytelic.net/2021/03/power-automate-sort-array/

If you're not into that, this works too:

 

Rhiassuring_0-1656739486565.png

 

1. Create a new array (I called mine arrBackwards)
2. Use an "Apply to Each" and point it at your original collection.

3. Get the last item in the Forwards array:  last(variables('arrForwards'))

4. Add it to the Backwards array.

5. Remove the last item from the Forwards array. take(variables('arrForwards'),add(length(variables('arrForwards')),-1))
6. Set the Forwards array to the previous compose so we reference that going forward.

 

 

That did the trick.

 

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