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Change Case of a String

Routine Summary Inputs Outputs Variables Used Authors Download
Converts a string to lower/upper case. Str1 - The string to convert
A - The case to convert to: 0 for lower, 1 for upper		 Ans or Str1- The converted string Str1, Str2, A, B, N Electromagnet8 http://www.cemetech.net/forum/viewtopic.php?p=235430#235430 Cemetech 
" "+Str1+" →Str1 
length(Ans→B 
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz→Str2 
For(N,2,B 
inString(sub(Str2,1+A26,26),sub(Str1,N,1 
If Ans 
sub(Str1,1,N-1)+sub(Str2,Ans+not(A)26,1)+sub(Str1,N+1,B-N→Str1 
End 
sub(Str1,2,B-2→Str1

We pad the string with spaces to prevent a domain error.

With our string stored in Str1, we loop through each character in order.

To convert to lowercase, we search for the uppercase characters in Str2.
To convert to uppercase, we search for the lowercase characters in Str2.

If it finds the other case character, we replace that character with the other case character. Otherwise, we skip the code to replace.

Example use:

"helLO wOrld"
converted to lowercase is
"hello world"

"H^:'[]{}/ello* world"
converted to uppercase is
"H^:'[]{}/ELLO* WORLD"

Authors: KG