If a hash function is given a student record object as an input, the int hash function produces.
When two items hash to the same place, we must have a systematic method for placing the second item in the hash table. This process is named collision resolution.
A collision, or more expressly, a hash code collision in a HashMap, is a situation where two or more key objects deliver the same final hash value and hence file to the same bucket location or collection index
A collision happens when two items hash to the same slot. Ideally, a perfect hash process is one in which no collision occurs.
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