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object Test {
def f = (1 to 100).toArray.view
def main(args: Array[String]): Unit = {
val xs = (f filter (_ < 50)).reverse.filter(_ % 2 == 0).map(_ / 2).flatMap(x => Array(1, x))
assert(xs.size == 48)
val ys = xs.toArray
assert(ys.size == 48)
assert(xs.sum == ys.sum)
}
}
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