EGR221 Exercise 10 Problem Solving. Choosing the right data structures 1. You are given a string of parenthesis (i.e. (.).[:], { }, >) and you need to figure out if the parentheses are matching For example, {[0 ]} and {{}} is matching, but {{}] and [ is not. What is the right data structure and algorithm to solve this problem? Type Your Answer Here: 2. You want to call all the phone numbers with a particular area code in someone's phone book, given the area code. What is the right data structure and algorithm to solve this problem? What is the time complexity of your solution? What is the space complexity of your solution? Type Your Answer Here