HR approached me via email, asked to tell a little bit about my self, and what is my strongest programming language, sent me a mail with pointer where to learn from. An phone Interview was set up for 3 weeks later. it was on collabedit.com with skype. the interviewer was very nice, asked to talk a little bit about what I do. asked one question. if you need to implement bool Find(string str) which finds if a string exists in a dictionary describe the data structure you will use. a.write how one node of it will look like, b. implement the function and add support for "?" wildcard which can return more than once.