Initial data commit

Task/Five-weekends/CoffeeScript/five-weekends-1.coffee

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+startsOnFriday = (month, year) ->
+  # 0 is Sunday, 1 is Monday, ... 5 is Friday, 6 is Saturday
+  new Date(year, month, 1).getDay() == 5
+
+has31Days = (month, year) ->
+  new Date(year, month, 31).getDate() == 31
+
+checkMonths = (year) ->
+  month = undefined
+  count = 0
+  month = 0
+  while month < 12
+    if startsOnFriday(month, year) and has31Days(month, year)
+      count += 1
+      console.log year + ' ' + month + ''
+    month += 1
+  count
+
+fiveWeekends = ->
+  startYear = 1900
+  endYear = 2100
+  year = undefined
+  monthTotal = 0
+  yearsWithoutFiveWeekends = []
+  total = 0
+  year = startYear
+  while year <= endYear
+    monthTotal = checkMonths(year)
+    total += monthTotal
+    # extra credit
+    if monthTotal == 0
+      yearsWithoutFiveWeekends.push year
+    year += 1
+  console.log 'Total number of months: ' + total + ''
+  console.log ''
+  console.log yearsWithoutFiveWeekends + ''
+  console.log 'Years with no five-weekend months: ' + yearsWithoutFiveWeekends.length + ''
+  return
+
+fiveWeekends()