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Which scheme uses a randomization approach?

(a) hashing by division

(b) hashing by multiplication

(c) universal hashing

(d) open addressing

My question comes from Hash Tables topic in chapter Hash Tables of Data Structures & Algorithms I

I have been asked this question in semester exam.

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Correct option is (c) universal hashing

The best I can explain: Universal hashing scheme uses a randomization approach whereas hashing by division and hashing by multiplication are heuristic in nature.

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