MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

DATA STRUCTURES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How do you call this special function that is used to map a given value with a particular key for faster access of elements?
A
merge
B
sorted array
C
hash
D
bubble
Explanation: 

Detailed explanation-1: -Hash table is one of the most important data structures that uses a special function known as a hash function that maps a given value with a key to access the elements faster.

Detailed explanation-2: -Hash Organization Hash Function – A hash function, abbreviated as h, refers to a mapping function that connects all of the search-keys K to that address in which the actual records are stored.

Detailed explanation-3: -A hash function is any function that can be used to map data of arbitrary size to fixed-size values, though there are some hash functions that support variable length output. The values returned by a hash function are called hash values, hash codes, digests, or simply hashes.

Detailed explanation-4: -Hashing is a technique or process of mapping keys, and values into the hash table by using a hash function. It is done for faster access to elements. The efficiency of mapping depends on the efficiency of the hash function used. Let a hash function H(x) maps the value x at the index x%10 in an Array.

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