How to convert an Array[Byte] to an Array[Int] in scala/spark?

Question

I have an Array[Byte] and I want to convert it to an Array[Int]:

for example,

val x : Array[Byte] = Array(192.toByte, 168.toByte, 1.toByte, 9.toByte)

val y : Array[Int] = Array(192, 168, 1, 9)

How can I convert x to y ?

temonehm · Accepted Answer · 2018-07-16 09:27:19Z

2

You can use simply map

val y:Array[Int] = x.map(_.toInt)

edited Jul 16, 2018 at 9:27

temonehm

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answered Jul 16, 2018 at 9:17

koiralo

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Sebastiaan van den Broek · Accepted Answer · 2018-07-16 09:16:30Z

1

Try this:

val y = x.map(_.toInt)

answered Jul 16, 2018 at 9:16

Sebastiaan van den Broek

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Comments

Pang · Accepted Answer · 2018-07-16 09:29:58Z

0

I tried this and it works:

val y = x.map(_.toInt & 0xff).deep

edited Jul 16, 2018 at 9:29

Pang

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answered Jul 16, 2018 at 9:26

Arwa Z

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2 Comments

RAGHHURAAMM Over a year ago

This will do and retain the values as they are I checked, but gives return type of IndexedSeq[Any] Can you please explian those & 0xff and .deep. Arwa Z?

Arwa Z Over a year ago

When I do simply val y = x.map(_.toInt) it returns I@50930bff, and when I do val y = x.map(_.toInt).deep it returns Array(-64, -88, 1, 9). That is why I add & 0xff so the result is Array(192, 168, 1, 9).

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