Posted by Mark on Friday, October 12, 2007 at 7:16am.
Most computer languages have a command that assigns a numerical value to a character variable, such as VAL($A) in Visual Basic.
I used to assign such a problem as you stated and found the "bubble method" to be the easiest to use for most students.
Assign your data into an array of 30 subscripted string variables.
Assign the first string variable as $large.
Set up a loop that runs from 1 to 30, or n, comparing each item to $large.
if the item is less than or equal to VAL($large) keep going in the loop, if the item is greater then assign its value to $large. Keep track of where you found the largest with a variable.
At the end of the first loop, the largest value,(the highest name in your alpha list) will be exchanged with the last entry, and that last entry will be placed in the position where $large was found.
Repeat the loop from 1 to 29, or n-1, the second largest will now be in the second last position etc.
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