DataWeave Interview Question: Reverse an Array After Combining Its Elements
This article will help you practice your DataWeave skills in MuleSoft. Use the article as a tutorial for learning more about DataWeave.
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Join For FreeThis article will help you practice your DataWeave skills in MuleSoft. Use the article as a tutorial for learning more about DataWeave.
Let's get started.
Input:
JSON
[
"uat", ["sit", "qa", "prod"]
]
Output:
[
"prod",
"qa",
"sit",
"uat"
]
Let's talk about the solution now.
In the first step, we will combine all the elements of an array into a single array using flatten function.
Step 1 Code:
DataWeave Script
%dw 2.0
output application/json
var combinedPayload = (flatten(payload))
---
combinedPayload
Step 1 Output:
JSON
[
"uat",
"sit",
"qa",
"prod"
]In the second step, we will reverse the contents of an array using the range selector.
Step 2 Code:
DataWeave Script
%dw 2.0
output application/json
var combinedPayload = (flatten(payload))
---
combinedPayload[(sizeOf(combinedPayload)) -1 to 0]
Step 2 Output:
JSON
[
"prod",
"qa",
"sit",
"uat"
]We have used sizeOf function to get the size of our combinedPayload along with the range selector to get the array in reverse format.
Happy Learning!
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