solved 06

06_leapYears/leapYears.js

@@ -1,6 +1,23 @@
-const leapYears = function() {
+const leapYears = function (year) {
+    if(year % 4 === 0) {
+        if (year % 100 === 0) {
+            if(year % 400 === 0) {
+                return true;
+            } else {
+                return false;
+            }
+        }
 
+        return true;
+    }
+
+    return false;
 };
 
 // Do not edit below this line
+
+// Leap years are years divisible by four
+// However, years divisible by 100 are not leap years 
+// unless they are divisible by 400 
+
 module.exports = leapYears;

06_leapYears/leapYears.spec.js

@@ -4,19 +4,19 @@ describe('leapYears', () => {
   test('works with non century years', () => {
     expect(leapYears(1996)).toBe(true);
   });
-  test.skip('works with non century years', () => {
+  test('works with non century years', () => {
     expect(leapYears(1997)).toBe(false);
   });
-  test.skip('works with ridiculously futuristic non century years', () => {
+  test('works with ridiculously futuristic non century years', () => {
     expect(leapYears(34992)).toBe(true);
   });
-  test.skip('works with century years', () => {
+  test('works with century years', () => {
     expect(leapYears(1900)).toBe(false);
   });
-  test.skip('works with century years', () => {
+  test('works with century years', () => {
     expect(leapYears(1600)).toBe(true);
   });
-  test.skip('works with century years', () => {
+  test('works with century years', () => {
     expect(leapYears(700)).toBe(false);
   });
 });