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Perfect numbers: Difference between revisions
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→optimized using only even numbers: optimized further by using even numbers.
m (→traditional method: added whitespace (blank line).) |
m (→optimized using only even numbers: optimized further by using even numbers.) |
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if low=='' then low=1 /*if no LOW, then assume unity.*/
if high=='' then high=low /*if no HIGH, then assume LOW. */
if low//2 then low=low+1 /*if LOW is odd, bump it by one.*/
w=length(high) /*use W for formatting output. */
numeric digits max(9,w+2) /*ensure enough digits to handle#*/
do i=low to high by
if isPerfect(i) then say right(i,w) 'is a perfect number.'
end /*i*/
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