Perfect totient numbers: Difference between revisions
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<lang rexx>/*REXX program calculates and displays the first N perfect totient numbers. */ |
<lang rexx>/*REXX program calculates and displays the first N perfect totient numbers. */ |
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parse arg N . /*obtain optional argument from the CL.*/ |
parse arg N . /*obtain optional argument from the CL.*/ |
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if N=='' | N=="," then N= 20 |
if N=='' | N=="," then N= 20 /*Not specified? Then use the default.*/ |
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@.= |
@.= . /*memoization array of totient numbers.*/ |
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p= 0 /*the count of perfect " " */ |
p= 0 /*the count of perfect " " */ |
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$= /*list of the " " " */ |
$= /*list of the " " " */ |
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say 'The first ' N " perfect totient numbers:" /*display the header to the terminal. */ |
say 'The first ' N " perfect totient numbers:" /*display the header to the terminal. */ |
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say strip($) /* " " list. " " " */ |
say strip($) /* " " list. " " " */ |
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exit |
exit 0 /*stick a fork in it, we're all done. */ |
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/*──────────────────────────────────────────────────────────────────────────────────────*/ |
/*──────────────────────────────────────────────────────────────────────────────────────*/ |
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gcd: parse arg x,y; do until y==0; parse value x//y y with y x; end; return x |
gcd: parse arg x,y; do until y==0; parse value x//y y with y x; end; return x |
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<lang rexx>/*REXX program calculates and displays the first N perfect totient numbers. */ |
<lang rexx>/*REXX program calculates and displays the first N perfect totient numbers. */ |
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parse arg N . /*obtain optional argument from the CL.*/ |
parse arg N . /*obtain optional argument from the CL.*/ |
||
if N=='' | N=="," then N= 20 |
if N=='' | N=="," then N= 20 /*Not specified? Then use the default.*/ |
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@.= |
@.= . /*memoization array of totient numbers.*/ |
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p= 0 /*the count of perfect " " */ |
p= 0 /*the count of perfect " " */ |
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$= /*list of the " " " */ |
$= /*list of the " " " */ |
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say 'The first ' N " perfect totient numbers:" /*display the header to the terminal. */ |
say 'The first ' N " perfect totient numbers:" /*display the header to the terminal. */ |
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say strip($) /* " " list. " " " */ |
say strip($) /* " " list. " " " */ |
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exit |
exit 0 /*stick a fork in it, we're all done. */ |
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/*──────────────────────────────────────────────────────────────────────────────────────*/ |
/*──────────────────────────────────────────────────────────────────────────────────────*/ |
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gcd: parse arg x,y; do until y==0; parse value x//y y with y x; end; return x |
gcd: parse arg x,y; do until y==0; parse value x//y y with y x; end; return x |
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