Index of array for an element with in array in Scala

Question

I have an Array of Array:

val arr = Array(Array("1","page"),Array("1","thankyou"))

I know that indexOf function is used to get the first index of an element in an array but not sure how to get the index of outer array based on inner array elements. Like index of "page" in arr is 0 and index of "thankyou" is 1. Kindly suggest a solution in Scala.

Thanks

Dmytro Mitin · Accepted Answer · 2023-02-08 12:53:01Z

3

Try

arr.map(_.indexOf("page"))     // 1, -1
arr.map(_.indexOf("thankyou")) // -1, 1

for the indexes in inner arrays (-1 means "not found") and

arr.indexWhere(_.exists(_ == "page"))     // 0
arr.indexWhere(_.exists(_ == "thankyou")) // 1

for the index in an outer array.

edited Feb 8, 2023 at 12:53

answered Feb 8, 2023 at 12:46

Dmytro Mitin

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