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Data analyst Q&A 25. What is a hash table collision? How can it be prevented?
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25. What is a hash table collision? How can it be prevented? This is one of the important data analyst interview questions. The sample answer is… When two separate keys hash to a common value, a hash table collision occurs. This means that two different data cannot be stored in the same slot. Hash collisions can be avoided by two methods : · Separate chaining – In this method, a data structure is used to store multiple items hashing to a common slot. · Open addressing – This method seeks out empty slots and stores the item in the first empty slot available.
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