Data commit

Task/Five-weekends/Sidef/five-weekends.sidef

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+require('DateTime');
+
+var happymonths = [];
+var workhardyears = [];
+var longmonths = [1, 3, 5, 7, 8, 10, 12];
+
+range(1900, 2100).each { |year|
+   var countmonths = 0;
+   longmonths.each { |month|
+        var dt = %s'DateTime'.new(
+            year => year,
+            month => month,
+            day   => 1
+        );
+
+        if (dt.day_of_week == 5) {
+            countmonths++;
+            var yearfound = dt.year;
+            var monthfound = dt.month_name;
+            happymonths.append(join("  ", yearfound, monthfound));
+      }
+   }
+
+    if (countmonths == 0) {
+        workhardyears.append(year);
+    }
+}
+
+say "There are #{happymonths.len} months with 5 full weekends!";
+say "The first 5 and the last 5 of them are:";
+say happymonths.first(5).join("\n");
+say happymonths.last(5).join("\n");
+say "No long weekends in the following #{workhardyears.len} years:";
+say workhardyears.join(",");