How to convert, in Scala, an Array[VertexIds] to a Map?

Question

In Scala, I have a an array of VertexIds

v: Array[org.apache.spark.graphx.VertexId] = Array(-2634311911308936962, 2326575714372975825, ...)

that i want to convert to a map where

Map(-2634311911308936962 -> 0,
    2326575714372975825  -> 1,
    ...
)

What is the most efficient way of doing this?

v.zipWithIndex.toMap make some effort – mavarazy Jul 07 '16 at 10:55 — mavarazy, Jul 07 '16 at 10:55

score 1 · Accepted Answer · answered Jul 07 '16 at 10:56

1

v.zipWithIndex.toMap

won't be sorted though

answered Jul 07 '16 at 10:56

Gavin

1 Answers1