There are many steps in writing a program. You need to specify in which area you need help with, pseudocode, debugging, logic, or whatever.
We are not going to post a turn-key program for you because you will not have learned anything.
Learning to programme is 50% understanding the logic, 20% learning the syntax of a language and 30% practice/trial-and-error.
Different people learn in different ways, so the percentages may vary, but no one becomes competent in programming without coding.
