Super-d numbers: Difference between revisions
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m (→{{header|REXX}}: added/changed whitespace and comments.) |
m (→{{header|REXX}}: changed a glyph in some comments.) |
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=={{header|REXX}}== |
=={{header|REXX}}== |
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<lang rexx>/*REXX program computes and displays the first N |
<lang rexx>/*REXX program computes and displays the first N super─d numbers for D from LO to HI.*/ |
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numeric digits 100 /*ensure enough decimal digs for calc. */ |
numeric digits 100 /*ensure enough decimal digs for calc. */ |
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parse arg n LO HI . /*obtain optional arguments from the CL*/ |
parse arg n LO HI . /*obtain optional arguments from the CL*/ |
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if n=='' | n=="," then n= 10 /*the number of |
if n=='' | n=="," then n= 10 /*the number of super─d numbers to calc*/ |
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if LO=='' | LO=="," then LO= 2 /*low end of D for the |
if LO=='' | LO=="," then LO= 2 /*low end of D for the super─d nums.*/ |
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if HI=='' | HI=="," then HI= 9 /*high " " " " " " " */ |
if HI=='' | HI=="," then HI= 9 /*high " " " " " " " */ |
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/* [↓] process D from LO ──► HI. */ |
/* [↓] process D from LO ──► HI. */ |
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do d=LO for HI-1; #= 0 |
do d=LO for HI-1; #= 0; $= /*count & list of super─d nums (so far)*/ |
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$= /* list " " " " " " */ |
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z= copies(d, d) /*the string that is being searched for*/ |
z= copies(d, d) /*the string that is being searched for*/ |
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do j=2 until #==n /*search for |
do j=2 until #==n /*search for super─d numbers 'til found*/ |
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if pos(z, d * j**d)==0 then iterate /*does product have the required reps? */ |
if pos(z, d * j**d)==0 then iterate /*does product have the required reps? */ |
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#= # + 1; $= $ j /*bump counter; add the number to list*/ |
#= # + 1; $= $ j /*bump counter; add the number to list*/ |
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