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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)