/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 vote113 views1 answer
Viewpager2 android dependency
Kotlin
8 votes257 views1 answer
SetOnClickListener example kotlin
Kotlin
0 vote148 views1 answer
Reverse string kotlin
Kotlin
3 votes148 views1 answer
Load img picaso ftp
Kotlin
6 votes158 views3 answers
Kotlin sleep
Kotlin
1 vote143 views1 answer
Kill other apps in kotlin
Kotlin
3 votes143 views1 answer
Kotlin convert string to char array
Kotlin
1 vote148 views1 answer
Kotlin create instance of class
Kotlin
1 vote140 views1 answer
Koltin measureTimeMillis
Kotlin
3 votes148 views1 answer
Bye bye find view by id extension in kotlin
Kotlin