What is Hashing

Medium
15 views 22 Dec 2025
Explain hashing and why hash tables are used for efficient data storage and retrieval....

Hash Table Implementation

Medium
12 views 22 Dec 2025
Design a basic hash table and explain how keys are mapped to indices....

Collision Handling Techniques

Medium
14 views 22 Dec 2025
Explain different collision handling techniques such as chaining and open addressing....

Chaining in Hashing

Medium
18 views 22 Dec 2025
Explain separate chaining technique with an example....

Linear Probing

Medium
13 views 22 Dec 2025
Explain linear probing for collision resolution in hashing....

Quadratic Probing

Medium
15 views 22 Dec 2025
Describe quadratic probing and how it reduces clustering compared to linear probing....

Double Hashing

Medium
14 views 22 Dec 2025
Explain double hashing and why it is considered better than other probing methods....

Load Factor

Medium
16 views 22 Dec 2025
Define load factor in hashing and explain its impact on performance....

Rehashing

Medium
15 views 22 Dec 2025
Explain rehashing and when it is required....

Find Frequency of Elements

Medium
14 views 22 Dec 2025
Find the frequency of each element in an array using hashing....

Check Duplicate Elements

Medium
17 views 22 Dec 2025
Check whether an array contains duplicate elements using hashing....

First Non-Repeating Element

Medium
18 views 22 Dec 2025
Find the first non-repeating element in an array using hashing....

Two Sum Problem

Medium
13 views 22 Dec 2025
Find two numbers in an array that add up to a target sum using hashing....

Subarray with Zero Sum

Medium
15 views 22 Dec 2025
Check whether a subarray with zero sum exists using hashing....

Longest Subarray with Given Sum

Medium
19 views 22 Dec 2025
Find the longest subarray with a given sum using hashing....

Intersection of Two Arrays

Medium
16 views 22 Dec 2025
Find the intersection of two arrays using hashing....

Union of Two Arrays

Medium
17 views 22 Dec 2025
Find the union of two arrays using hashing....

Longest Consecutive Sequence

Medium
14 views 22 Dec 2025
Find the length of the longest consecutive elements sequence using hashing....

Group Anagrams

Medium
18 views 22 Dec 2025
Group strings that are anagrams using hashing....

Check Isomorphic Strings

Medium
14 views 22 Dec 2025
Check whether two strings are isomorphic using hashing....