Top Algorithm Interview Questions Fully Explained; Ransom Notes using hashmaps

We have a magazine and a RansomNote draft and we want to know if we can create that RansomNote using the letters we have in the magazine. This can be solved in many ways. I'll do a standard hashmap solution first and later will show a solution which beats 95% of other peoples solutions; speed wise.

00:00 - Ransom Note using hashmaps interview questions 00:50 - Why hash maps 03:26 - Understanding the question and proposing the answer 06:33 - writing the solution 09:43 - Proposing a faster solution using set and count ... https://www.youtube.com/watch?v=V5NbOeaUCj8