Python Katas EN

2. Katas

Solution:

1. Create a function that takes two variables.
2. We pass to a part of the help variables:
   • start_balance - to duplicate the outstanding balance, later it will come in handy.
   • monthlyPercentRate - monthly percent rate.
   • lowerPay - lower limit of payment.
   • upperPay - upper limit of payment.
   • epsilon - comparison variable.
   • count - for the number of attempts for which the program has found the minimum payment.
3. We pass to the main part of the program:
   • We will use the cycle while, since we do not know how many attempts we will need.
   • Help variables in the cycle itself:
     • minPay - minimum payment at the moment.
     • OutStandingBalance - original outstanding balance.
     • count - add 1 to the number of attempts.
   • Apply the algorithm, which we disassembled in Example.
   • Check the outstanding balance after one year:
     • If it is larger than epsilon, then we change the lower limit to minPay and we return to item 3.
     • If it is smaller than epsilon, then we change the upper limit to minPay and we return to item 3.
     • In other cases, we exit the cycle
   • Round minPay up to the second digit after the comma and return the string by condition

That's all.

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