Hashing Visualizers

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Step through every Hashing problem with animated runtime state, source highlighting, and curated test cases. Built for coding-interview prep and durable algorithmic intuition.

Group Anagrams - Approach 2 - Hashed Key

Hash 26-letter frequency counts so every anagram shares the same signature without sorting.

Frequency Signature Hash

KMP (Knuth-Morris-Pratt) Algorithm

Build the LPS table and reuse prefix matches so substring search skips redundant comparisons.

LPS / Prefix Function

Linked List Cycle - Hash Table

Store visited node references in a hash set and stop the first time a node repeats.

Valid Palindrome - Approach 1 - Extra Space

Create a cleaned lowercase copy, reverse it into extra space, and compare both strings directly.

Sanitize + Reverse Copy