a) Write down the algorithms to insert and delete item for QUEUE. b) Consider the following deque of characters where DEQUE is a circular array which is allocated in six memory cells: LEFT =2, RIGHT =4, DEQUE: ,A,C,D,,. Describe the deque while the following operations take place sequentially: i. F is added to the right of the deque. ii. Two letters on the right are deleted. iii. K,L and M are added to the left of the deque. iv. One letter on the left is deleted