/Kotlin/How to get index of item in arraylist in kotlin

How to get index of item in arraylist in kotlin

val b: List<Int> = a.mapIndexed { i, b -> if (b) i else null }.filterNotNull().toList()
val c: List<Int> = a.withIndex().filter { it.value }.map { it.index }

Similar codes

0 vote198 views1 answer
How to get current date in kotlin
Kotlin
1 vote179 views1 answer
Fileoutputstream kotlin example
Kotlin
2 votes193 views1 answer
Android garbage collection
Kotlin
4 votes224 views1 answer
Logging in java
Kotlin
0 vote232 views1 answer
Okhttp delete cache
Kotlin
0 vote179 views1 answer
Kotlin question mark
Kotlin
-1 vote181 views1 answer
Snackbar kotlin
Kotlin
0 vote186 views1 answer
Kotlin enum serialization
Kotlin
0 vote216 views3 answers
Kotlin list filter example
Kotlin
0 vote179 views1 answer
Capitalise text kotlin
Kotlin