1. Computational problem solving: Developing strategies: Given a string, S, of n digits in the range from 0 to 9, describe an efficient strategy for converting S into the integer it represents.

2. Computational problem solving: Estimating problem solving time: Suppose there are three algorithms to solve a problem- a O(n) algorithm (A1), a O(nlogn) algorithm (A2) and a O(n2) algorithm (A3) where log is to the base 2. Using the techniques and assumptions in slide set L2- Buffet(SelectionProblem).ppt, determine how long in seconds it will take for each algorithm to solve a problem of size 200 million. You must show your work to get credit, i.e., a correct answer without showing how it was arrived at will receive zero credit.