Sonar Interview Question

What would you implement to process this string containing this arithmetical expression? (compiler exercise for 3h) What algorithm would you implement for finding at which step of the ladder the eggs would break if you had 1 egg only? if you had a basket of eggs...? What did you learn about yourself in the last 3-4 months? Cite 4 qualities of yours. What problem did you have at work recently? What did you do in there?