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What is hash-collision in a hash table and how was it handled in Java?

–1 vote
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What is hash-collision in a hash table and how was it handled in Java?
posted Aug 9 by anonymous

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+1 vote

This was asked today in interview any pointer.

"Design a unique hash function for every tweet in Twitter"

+1 vote

Example
Map data = new HashMap();
data.put("a","America");
data.put("a","Africa");
data.put("b","Bangladesh");

Need to have both "America" and "Africa" as value against key "a". Is there any mechanism to achieve this scenario.

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