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object Test {
def main(args: Array[String]) {
val lst = List(1, 2, 3, 4, 5)
assert(lst.scanLeft(0)(_ + _) == List(0, 1, 3, 6, 10, 15))
assert(lst.scanRight(0)(_ + _) == List(15, 14, 12, 9, 5, 0))
val emp = List[Int]()
assert(emp.scanLeft(0)(_ + _) == List(0))
assert(emp.scanRight(0)(_ + _) == List(0))
}
}
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