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Which of the following statement is/are correct?

1. If we use only Front pointer in queue, then insertion takes O(n) time while deletion in O(1) time.

2. If we use only Rear pointer in queue, then insertion is O(1) and deletion is not possible.
asked in DS by Loyal (2.5k points)   | 200 views
Tushar.... What type of Data structure you are assuming in thus scenario?
it should be linked list

1 Answer

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What u are talking about is not implemented in simple queue.

so both are false.

1..If we use only Front pointer in queue, then insertion takes O(n) time while deletion in O(1) time.  flase.

Deletion in O(1) time thats ok but if 1st element insert then u can delete second in O(1) time.

2..If we use only Rear pointer in queue, then insertion is O(1) and deletion is not possible.

insertion not possible b/c u can go in left direction in simple queue.

 

answered by Veteran (43.2k points)  
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