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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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27
Task/Rot-13/GAP/rot-13.gap Normal file
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rot13 := function(s)
local upper, lower, c, n, t;
upper := "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
lower := "abcdefghijklmnopqrstuvwxyz";
t := [ ];
for c in s do
n := Position(upper, c);
if n <> fail then
Add(t, upper[((n+12) mod 26) + 1]);
else
n := Position(lower, c);
if n <> fail then
Add(t, lower[((n+12) mod 26) + 1]);
else
Add(t, c);
fi;
fi;
od;
return t;
end;
a := "England expects that every man will do his duty";
# "England expects that every man will do his duty"
b := rot13(a);
# "Ratynaq rkcrpgf gung rirel zna jvyy qb uvf qhgl"
c := rot13(b);
# "England expects that every man will do his duty"