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Ingy döt Net 2013-04-10 22:43:41 -07:00
parent db842d013d
commit d066446780
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Task/Digital-root/PARI-GP/digital-root.pari Normal file
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dsum(n)=my(s); while(n, s+=n%10; n\=10); s
additivePersistence(n)=my(s); while(n>9, s++; n=dsum(n)); s
digitalRoot(n)=if(n, (n-1)%9+1, 0)