6 lines
150 B
Text
6 lines
150 B
Text
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enc(s,n)={
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Strchr(Vecsmall(apply(k->if(k>96&&k<123,(k+n-97)%26+97, if(k>64&&k<91, (k+n-65)%26+65, k)),
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Vec(Vecsmall(s)))))
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};
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dec(s,n)=enc(s,-n);
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