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Comparison of Collision Resolution Methods
• Chaining: Simple, flexible, but requires extra memory for lists.
• Linear Probing: Easy to implement, but clustering can occur.
• Quadratic Probing: Reduces clustering but may leave unused slots.
• Double Hashing: Best distribution but requires two good hash functions.
9.5 Performance Analysis
The efficiency of a hash table depends on how well the hash function distributes keys
and how collisions are resolved. Performance is typically measured in terms of time
complexity for insertion, deletion, and search operations. While hash tables are designed to
provide constant-time average performance ( (1)), collisions can degrade performance,
especially if the table becomes too full or the hash function is poor.
9.5.1 Load Factor and Efficiency
The load factor ( ) is defined as:
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