Long year: Difference between revisions

=={{header|Lua}}==

<syntaxhighlight lang="lua">function isLongYear (y)

local function p (y)

local f = math.floor

return (y + f(y/4) - f(y/100) + f(y/400)) % 7

end

return p(y) == 4 or p(y - 1) == 3

end

print("Long years in the 21st century:")

for year = 2001, 2100 do

if isLongYear(year) then io.write(year .. " ") end

end</syntaxhighlight>

{{out}}

<pre>Long years in the 21st century:

2004 2009 2015 2020 2026 2032 2037 2043 2048 2054 2060 2065 2071 2076 2082 2088 2093 2099</pre>