Question
In open addressing, if a collision occurs and the hash function h(key) maps to an occupied slot, which probing technique attempts to find the next available slot by checking (h(key) + i^2) % table_size for increasing values of i?
Solution
Quadratic probing is an open addressing technique where, upon a collision at h(key), subsequent probes are made at (h(key) + 1² ) % table_size, (h(key) + 2² ) % table_size, and so on.
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