12 lines
352 B
Scala
12 lines
352 B
Scala
val q=new Queue[Int]()
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println("isEmpty = " + q.isEmpty)
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try{q dequeue} catch{case _:java.util.NoSuchElementException => println("dequeue(empty) failed.")}
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q enqueue 1
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q enqueue 2
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q enqueue 3
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println("queue = " + q)
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println("front = " + q.front)
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println("dequeue = " + q.dequeue)
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println("dequeue = " + q.dequeue)
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println("isEmpty = " + q.isEmpty)
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