No matter how good your hash function is, collisions (two keys hashing to the same index) are inevitable due to the Pigeonhole Principle. There are two primary ways to handle them.
In a well-designed hash table, search, insertion, and deletion take O(1) time on average. c program to implement dictionary using hashing algorithms
Key 1 inserted. Key 2 inserted. Key 11 inserted (Collision handled). Key 21 inserted (Collision handled). Key 5 inserted. No matter how good your hash function is,
Our resizing trigger at 0.75 maintains near-optimal performance. c program to implement dictionary using hashing algorithms