Epic Software Engineer interview questions

1. Read in a text. Return # of occurrences of each character 2. Read in a string like "1,4,5,8,2,3,", and a target . Find a substring that adds up to the target 3. Given an NxN grid, search for a string 4. Find phone numbers of any length given these conditions a. No more than three repeats, b. If there are 4s in the string, it must start with a 4

What was the most difficult bug or challenged you faced in your latest project, and how did you resolve it? Describe your latest project to me? What do you know about Epic?