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DO...LOOP Statement Example
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' This example uses a DO...LOOP statement to perform tests at the end of the
' loop because the entire array must be examined at least once to see if
' it is in order. In general, test at the end of a loop only if you know
' that you always want the statement block executed at least once.
 
' To try this example:
' 1. Choose New Project from the File menu
' 2. Copy the code example below to the code window
' 3. Press F5 to run the example
 
 CONST NOEXCH = -1       ' Set up a special value to indicate no exchanges
 DIM Exes(12)
 CLS                     ' Clear the screen
 FOR i = 1 TO 12 STEP 2  ' Load the array and mix it up
         Exes(i) = 13 - i
         Exes(i + 1) = 0 + i
 NEXT i
 Limit = 12
 PRINT "This is the list of numbers to sort in ascending order:"
 PRINT
 FOR i = 1 TO 12
         PRINT USING " ### "; Exes(i);
 NEXT i
 PRINT
 
 PRINT : PRINT "Press any key to continue..."
 DO                        ' DO...LOOP with test at the bottom of the loop
 LOOP WHILE INKEY$ = ""
 DO
     Exchange = NOEXCH
     FOR i = 1 TO Limit - 1             ' Make one pass over the array
         IF Exes(i) > Exes(i + 1) THEN
              SWAP Exes(i), Exes(i + 1) ' Exchange array elements
              Exchange = i              ' Record location of most
         END IF                         ' recent exchange
     NEXT i                        ' Sort on next pass only to where
     Limit = Exchange              ' last exchange was done
 LOOP UNTIL Exchange = NOEXCH      ' Sort until no elements are exchanged
 PRINT : PRINT "Sorting is completed. This is the sorted list:": PRINT
 FOR i = 1 TO 12
         PRINT USING " ### "; Exes(i);
 NEXT i
 END