Hash Table Implementation

Objective : To implement a Hash Table

Input:  A set of pairs of keys and values

Approach:

    • Create a Hash Table
      • Hashtable<Integer, String> ht = new Hashtable<Integer, String>();
    • Insert values in hash table using put(key,value)
      • ht.put(key, value);

  • Get values from hash table using get(key)
    • ht.get(key);
hash table

hash table

Advantage : The search time for any element is O(1) since it uses key to find an element so it takes constant time. But drawback is that it takes extra space.

Complete Code:

Output:

All values inserted
Employee with ID 1 is Sumit
Employee with ID 3 is Rishi

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