How to apply hashing in intersection problem

#1

What should be the approach to solve intersection problem using Hashing concept

#2

@prateekad99,
You can use a Hashset. Put all elements of array 1 in a hashset. And search element wise for array 2 elements in the hashset.

#3

https://ide.codingblocks.com/s/195536 Still

#4

Getting wrong output after applying hashset concept

#5

@prateekad99,
https://ide.codingblocks.com/s/195725 I have edited your code. Kindly complete the intersection function. I have put all the elements from array 1 in a hashmap with their respective frequencies.

#6

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