Data commit

Task/Leap-year/Scala/leap-year-1.scala

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+//use Java's calendar class
+new java.util.GregorianCalendar().isLeapYear(year)

Task/Leap-year/Scala/leap-year-2.scala

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+java.time.LocalDate.ofYearDay(year, 1).isLeapYear()

Task/Leap-year/Scala/leap-year-3.scala

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+def isLeapYear(year:Int)=if (year%100==0) year%400==0 else year%4==0;
+
+//or use Java's calendar class
+def isLeapYear(year:Int):Boolean = {
+  val c = new java.util.GregorianCalendar
+  c.setGregorianChange(new java.util.Date(Long.MinValue))
+  c.isLeapYear(year)
+}