java.lang.ArrayIndexOutOfBoundsException: -1

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java.lang.ArrayIndexOutOfBoundsException: -1
at com.tcs.QueueUsingAraay.QueueImpl.dequeue(QueueImpl.java:51)
at com.tcs.QueueUsingAraay.QueueImpl.reverse(QueueImpl.java:93)
at com.tcs.QueueUsingAraay.QueueImpl.main(QueueImpl.java:78)

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