How to implement this logic flow? - logic

Question

ok, here is the story...
I have 3 textfield for user to select....
[textfield A][textfield B][textfield C]
and a confirm button, the user need to add three textfield, after that , the user need to click the confirm button.... but based on different select order, the result is different, for example:
A>B>C, I will show red.
When the user select in this order:
B>A>C I will show green.
When the user select in this order:
C>B>A I will show the color blue....
based on different user select order, it will show different color....
But the question is, when I add more and more textfield, how can I implement this logic?
First, I design to have an array , when the user select one textfield, I store the textfield id to array, when user select the second one, I will store in the array, until the user click confirm, I read back the array to display the color....
But I think it will become very big & messy when more and more textfield is added, any better ideas? Thank you.

Answer 1

It's a bit of a hack, but what I'd be inclined to do is store the selections in a string that gets appended to each time (starting with empty string of course), trimming to the rightmost x characters. Then you can do a simple switch/case statement to determine the color. For example (C# fragments, sort of):
string selectStr = string.Empty;
void Select(string btn) {
selectStr += btn;
selectStr = selectStr.Remove(0, btn.Length - 3);
}
void Confirm() {
switch (selectStr) {
case "ABC" : /* make red */ break;
case "BAC" : /* make green */ break;
// etc.
}
}