The interview was 3 hours long. There was a technical section, which asked: given an abstract programming language and its syntax rules, can you evaluate these expressions? The second section was the programming interview, which tested you on basic string parsing.

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.