/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

3 votes291 views1 answer
Kotlin round double string
Kotlin
2 votes324 views1 answer
Kotlin regex
Kotlin
0 vote277 views1 answer
How to get current date in kotlin
Kotlin
0 vote270 views1 answer
Android studio recyclerview show item bottom
Kotlin
3 votes286 views1 answer
Kotlin remove findviewbyid plugin
Kotlin
1 vote322 views1 answer
Detected multiple kotlin daemon sessions at build/kotlin/sessions
Kotlin
0 vote277 views1 answer
Change time to readable time in kotlin
Kotlin
0 vote259 views1 answer
Kotlin string to float
Kotlin
2 votes276 views1 answer
Kotlin read all inputstream
Kotlin
1 vote283 views1 answer
Jointostring kotlin
Kotlin