var a = arrayListOf<String>("hello","hello","lamine")

I need remove items match and reprint it again

CodePudding user response：

If you're trying to remove items that satisfy a particular condition, you just use removeAll: a.removeAll { str -> matches(str) }.

If you're trying to remove duplicates, you'll need an added Set:

val deduped = a.toSet()
a.clear()
a.addAll(deduped)

or you can write

a = a.distinct()

if a is a var.