Question

ps1 problem 3, a few questions about the solution set:
1. The first loop is a while True loop. Is there ever a point which would return a False value, or does ending the loop depending on a break?
2. The test for finding a solution is: "if (high_payment - low_payment < 0.005)". Why not if ....<.01? Isn't .01 the accuracy required in the problem? Would <.01 not give an accurate enough response? Why?
3. Instead of the above two, I did while abs(balance)>.01 and nested another loop to simulate the passage of time. Is this better, worse, equivalent?
4. Why recompute the balance and months?

Answer 1

1. The while True loop is an infinite loop. It will only end with a break.
2. Not sure.
3. Not sure.
4. I was wondering the same, so I tried it with and without recomputing the balance. The difference was that without recalculating post-rounding the balance was +$0.01, and when recalculated after rounding the balance is -$0.01. Thus, by rounding up to the highest cent we change the final balance by two cents.