Hash clash, Data Structure & Algorithms

Assignment Help:

Q. What do you understand by the term by hash clash? Explain in detail any one method to resolve the hash collisions.                                                                                                   

Ans:

Hashing is not a perfect technique. The collision occurs seldom when the two different key hash into the same hash value and are also assigned to the same array element by mistake. Programmers have come up with number of techniques for dealing with this problem. An ordinary way to deal with a collision is to create a linked list of entries that have their hash value same. For example, let the key of each entry hashes to the same hash value and this process result in both being assigned to the same array element of the particular hashtable.

Because the two entries cannot be assigned the same array element, the programmer makes a linked list. The first user-explained structure is assigned to the pointer in the array element. The second isn't assigned to any of the array element and is instead linked to the first user-defined structure, therefore forming a linked list.

For example: in the below table of the size 7

42, 56 both are mapped to index 0 as 42%7=0 and 56%7=0.

25, 42, 96, 101, 102, 162, 197 can be mapped as shown below:

174_Hash clash.png


Related Discussions:- Hash clash

Splaying steps - splay trees, Readjusting for tree modification calls for r...

Readjusting for tree modification calls for rotations in the binary search tree. Single rotations are possible in the left or right direction for moving a node to the root position

Quicksort and bubble sort algorithms, Task If quicksort is so quick, w...

Task If quicksort is so quick, why bother with anything else? If bubble sort is so bad, why even mention it? For that matter, why are there so many sorting algorithms? Your

Which are the two standard ways of traversing a graph, Which are the two st...

Which are the two standard ways of traversing a graph? i. The depth-first traversal   ii. The breadth-first traversal

Deletion of any element from the circular queue, Algorithm for deletion of ...

Algorithm for deletion of any element from the circular queue: Step-1: If queue is empty then say "queue is empty" & quit; else continue Step-2: Delete the "front" element

Data Warehousing, Assume you are in the insurance business. Find two exampl...

Assume you are in the insurance business. Find two examples of Type 2 slowly changing dimensions in that business. As an analyst on the project, write the specifications for applyi

Objectives of lists, After going through this unit, you will be able to: ...

After going through this unit, you will be able to: • define and declare Lists; • understand the terminology of Singly linked lists; • understand the terminology of Doubly

Four applications or implementation of the stack, Q. Write down any four ap...

Q. Write down any four applications or implementation of the stack.                                     Ans. (i)       The Conversion of infix to postfix form (ii)

Recurrence relation, solve the following relation by recursive method: T(n...

solve the following relation by recursive method: T(n)=2T(n^1/2)+log n

What is binary space partition, Binary Space Partition A binary space-p...

Binary Space Partition A binary space-partitioning (BSP) tree is an efficient method for determining object visibility by painting surfaces onto the screen from back to front,

Singly linked list , The two pointers per number of a doubly linked list pr...

The two pointers per number of a doubly linked list prepare programming quite easy. Singly linked lists as like the lean sisters of doubly linked lists. We need SItem to consider t

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd