A data structure for n elements and O(1) operations
Propose a data structure for the following:
The data structure would hold elements from 0 to n-1. There is no order on the elements (no ascending/descending order requirement)
The complexity of the operations should be as follows:
* Insertion of an element – O(1)
* Deletion of an element – O(1)
* Finding an element – O(1)
We strongly recommend to minimize the browser and try this yourself first.
A boolean array works here. Array will have value ‘true’ at ith index if i is present, and ‘false’ if absent.
We create an array of size n and initialize all elements as absent.
Insertion of an element:
Deletion of an element:
Finding an element:
As an exercise, change the data structure so that it holds values from 1 to n instead of 0 to n-1.
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