Design a system for counting how many times an item is clicked on. You need to record clicks and be able to report how many clicks for a given item. Be able to report which items are the most popular. Keep in mind scalability, since this is Amazon we're talking about.
What is the time complexity of your solution?
How could you represent days and month using 2 6 sided dice
The logic part was not that easy for me
easy
1) A puzzle to find 3 numbers in an array which summed to 0.
Given a list of n elements...every element has a duplicate except one...Find that lone number?
Reverse the words in a sentence. For example, "Have a nice day" becomes "day nice a Have"
You have two linked lists that merge at some node. The lists could be billions of nodes long. Find the node where the lists merge in the most optimal time while using a low amount of memory.
string compression: aaabbbbcc ->a3b4c2
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