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Applesoft BASIC
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==={{header|Applesoft BASIC}}===
<syntaxhighlight lang="basic"> 10 I$ = "WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWWW"
20 GOSUB 100ENCODE
30 GOSUB 200DECODE
40 PRINT "INPUT: ";I$
50 PRINT "OUTPUT: ";
60 GOSUB 250 PRINT
70 END
100 O$ = MID$ (I$,1,1):N$ = MID$ ( CHR$ (0),1, LEN (O$)): IF LEN (I$) < 2 THEN RETURN
110 FOR I = 2 TO LEN (I$):C$ = MID$ (I$,I,1): IF C$ < > RIGHT$ (O$,1) THEN O$ = O$ + C$:N$ = N$ + CHR$ (0): NEXT I: RETURN
120 N$ = MID$ (N$,1, LEN (O$) - 1) + CHR$ ( ASC ( MID$ (N$, LEN (O$))) + 1): NEXT I: RETURN
200 I$ = "": IF LEN (O$) THEN FOR I = 1 TO LEN (O$): FOR J = 0 TO ASC ( MID$ (N$,I)):I$ = I$ + MID$ (O$,I,1): NEXT J,I
210 RETURN
250 IF LEN (O$) THEN FOR I = 1 TO LEN (O$): PRINT ASC ( MID$ (N$,I)) + 1; MID$ (O$,I,1);: NEXT I
260 RETURN
</syntaxhighlight>
{{out}}
<pre>INPUT: WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWWW
OUTPUT: 12W1B12W3B24W1B14W</pre>
=={{header|BASIC256}}==
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