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Ingy döt Net 2013-10-27 23:48:49 +00:00
parent 776bba907c
commit 372c577f83
233 changed files with 0 additions and 6724 deletions
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45
Task/Five-weekends/JavaScript/five-weekends.js
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@ -1,45 +0,0 @@
function startsOnFriday(month, year)
{
// 0 is Sunday, 1 is Monday, ... 5 is Friday, 6 is Saturday
return new Date(year, month, 1).getDay() === 5;
}
function has31Days(month, year)
{
return new Date(year, month, 31).getDate() === 31;
}
function checkMonths(year)
{
var month, count = 0;
for (month = 0; month < 12; month += 1)
{
if (startsOnFriday(month, year) && has31Days(month, year))
{
count += 1;
document.write(year + ' ' + month + '<br>');
}
}
return count;
}
function fiveWeekends()
{
var
startYear = 1900,
endYear = 2100,
year,
monthTotal = 0,
yearsWithoutFiveWeekends = [],
total = 0;
for (year = startYear; year <= endYear; year += 1)
{
monthTotal = checkMonths(year);
total += monthTotal;
// extra credit
if (monthTotal === 0)
yearsWithoutFiveWeekends.push(year);
}
document.write('Total number of months: ' + total + '<br>');
document.write('<br>');
document.write(yearsWithoutFiveWeekends + '<br>');
document.write('Years with no five-weekend months: ' + yearsWithoutFiveWeekends.length + '<br>');
}
fiveWeekends();