an algorithm that describes the steps the program takes to find the HCF (highest common factor) of two input numbers entered by the user:

1. Display a message asking the user to enter two numbers.
2. Create two input fields for the user to enter the numbers.
3. Create a button labeled "Calculate HCF".
4. When the "Calculate HCF" button is clicked, execute the calculate function.
5. Inside the calculate function, get the values entered by the user in the input fields.
6. Validate the user input to ensure that both numbers are positive integers.
7. Define a function gcd that takes two arguments a and b and returns the greatest common divisor of a and b.
8. Calculate the HCF of the two input numbers by using the gcd function.
9. Display the result to the user in a paragraph element.
10. This algorithm creates a simple and user-friendly calculator that finds the HCF of two input numbers entered by the user.

HCF Calculator BY TBLOG

Enter two numbers:

Calculate HCF