Question

How to remove trailing nulls (0) from byte array in Scala

Answer 1

val byteArray: Array[Byte] = Array(1, 2, 3, 0, 0, 0, 0) 

// Remove trailing nulls (zeros)
val trimmedArray: Array[Byte] = byteArray.reverse.dropWhile(_ == 0).reverse

println(trimmedArray.mkString(", ")) 



 
/*
run:

1, 2, 3
  
*/

 

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Answer 2

val byteArray: Array[Byte] = Array(1, 2, 3, 0, 0, 0, 0) 

// Remove trailing nulls (zeros)
val trimmedArray: Array[Byte] = byteArray.take(byteArray.lastIndexWhere(_ != 0) + 1)

println(trimmedArray.mkString(", ")) 



 
/*
run:

1, 2, 3
  
*/

 

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