Test: Searching - 2 - CUET Humanities MCQ

When two elements map to the same slot in the hash table, it is called collision.

The time taken by different hash functions may be different, but it remains constant for a particular hash function.

It searches a hash table extremely fast just to find the hash value for the item that you're looking for.

The complexity of linear search is therefore O(n). If the element to be searched lived on the the first memory block then the complexity would be: O(1).

A serial search involves starting at the beginning of a file and checking each record in turn. You would need to check if the first record is the one you are looking for. If it is, then you can stop searching and report that you have found the record. If it isn't the one you are looking for, then you go on to the next record.

This is correct since, in an unsorted array, an element can be added in constant time.

The binary search algorithm cannot be applied to sorted linked list.

Hash value points to the element exactly using index.

The data is organised in a tree structure where the nodes represent the records and the branches of the tree represent the fields. Since the data is organized in a tree structure, the parent node has the links to its child nodes. If we want to search a record, we have to traverse the tree from the root through all its parent nodes to reach the specific record. Thus, searching for a record is very time consuming.The hashing function is used to locate the root.

Folding Method in Hashing: It breaks up a key value into precise segments that are added to form a hash value, and look at another technique is to apply a multiplicative hash function to each segment individually before adding. Some folding methods go one step further and reverse every other piece before the addition.