Summary

double_hashing is a collision_resolution method for an open_addressing hash_table. It uses a primary_hash h1(key) and a secondary_hash h2(key). Probes follow a probe_sequence: index = (h1 + i*h2) % table_size. Require h2(key) != 0 and relatively prime to the table_size; a prime_modulus helps. It reduces primary_clustering versus linear probing. Control load_factor to keep performance. Searches and inserts follow the same sequence. Deletions mark a tombstone_marker, not empty. Stop on empty slot or found key.