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Ingy döt Net 2026-02-01 16:33:20 -08:00
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Task/Long-year/Phix/long-year.phix
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@ -1,20 +1,26 @@
(phixonline)-->
<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">week_number</span><span style="color: #0000FF;">(</span><span style="color: #004080;">integer</span> <span style="color: #000000;">y</span><span style="color: #0000FF;">,</span><span style="color: #000000;">m</span><span style="color: #0000FF;">,</span><span style="color: #000000;">d</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">integer</span> <span style="color: #000000;">doy</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">day_of_year</span><span style="color: #0000FF;">(</span><span style="color: #000000;">y</span><span style="color: #0000FF;">,</span><span style="color: #000000;">m</span><span style="color: #0000FF;">,</span><span style="color: #000000;">d</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">dow</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">day_of_week</span><span style="color: #0000FF;">(</span><span style="color: #000000;">y</span><span style="color: #0000FF;">,</span><span style="color: #000000;">m</span><span style="color: #0000FF;">,</span><span style="color: #000000;">d</span><span style="color: #0000FF;">),</span>
<span style="color: #000000;">week</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">floor</span><span style="color: #0000FF;">((</span><span style="color: #000000;">doy</span><span style="color: #0000FF;">-</span><span style="color: #000000;">dow</span><span style="color: #0000FF;">+</span><span style="color: #000000;">10</span><span style="color: #0000FF;">)/</span><span style="color: #000000;">7</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">return</span> <span style="color: #000000;">week</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
with javascript_semantics
function week_number(integer y,m,d)
integer doy = day_of_year(y,m,d),
dow = day_of_week(y,m,d),
week = floor((doy-dow+10)/7)
return week
end function
--/* -- or: (same results)
constant Thursday = 4
function long_year(integer y)
return day_of_week(y,1,1)=Thursday
or day_of_week(y,12,31)=Thursday
end function
--*/
<span style="color: #008080;">for</span> <span style="color: #000000;">c</span><span style="color: #0000FF;">=</span><span style="color: #000000;">20</span> <span style="color: #008080;">to</span> <span style="color: #000000;">22</span> <span style="color: #008080;">do</span>
<span style="color: #004080;">sequence</span> <span style="color: #000000;">long_years</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{}</span>
<span style="color: #004080;">integer</span> <span style="color: #000000;">century</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">(</span><span style="color: #000000;">c</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)*</span><span style="color: #000000;">100</span>
<span style="color: #008080;">for</span> <span style="color: #000000;">year</span><span style="color: #0000FF;">=</span><span style="color: #000000;">century</span> <span style="color: #008080;">to</span> <span style="color: #000000;">century</span><span style="color: #0000FF;">+</span><span style="color: #000000;">99</span> <span style="color: #008080;">do</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">week_number</span><span style="color: #0000FF;">(</span><span style="color: #000000;">year</span><span style="color: #0000FF;">,</span><span style="color: #000000;">12</span><span style="color: #0000FF;">,</span><span style="color: #000000;">28</span><span style="color: #0000FF;">)=</span><span style="color: #000000;">53</span> <span style="color: #008080;">then</span>
<span style="color: #000000;">long_years</span> <span style="color: #0000FF;">&=</span> <span style="color: #000000;">year</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"Long years in the %d%s century:%v\n"</span><span style="color: #0000FF;">,</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">c</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">ord</span><span style="color: #0000FF;">(</span><span style="color: #000000;">c</span><span style="color: #0000FF;">),</span><span style="color: #000000;">long_years</span><span style="color: #0000FF;">})</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<!--
for c=20 to 22 do
sequence long_years = {}
integer century = (c-1)*100
for year=century to century+99 do
if week_number(year,12,28)=53 then
-- if long_year(year) then
long_years &= year
end if
end for
printf(1,"Long years in the %d%s century:%v\n", {c,ord(c),long_years})
end for