Added easy/third_greatest

bradhanson · bradhanson · commit c10a26219438 · 2018-08-01T17:02:10.000-04:00
diff --git a/easy/third_greatest.js b/easy/third_greatest.js
@@ -0,0 +1,23 @@
+/**
+ * Have the function thirdGreatest(strArr) take the array of strings stored in
+ * strArr and return the third largest word within in. So for example: if strArr
+ * is ["hello", "world", "before", "all"] your output should be world because
+ * "before" is 6 letters long, and "hello" and "world" are both 5, but the
+ * output should be world because it appeared as the last 5 letter word in the
+ * array. If strArr was ["hello", "world", "after", "all"] the output should be
+ * after because the first three words are all 5 letters long, so return the
+ * last one. The array will have at least three strings and each string will
+ * only contain letters.
+ *
+ * https://www.coderbyte.com/results/bhanson:Third%20Greatest:JavaScript
+ *
+ * @param  {array} strArr
+ * @return {string}
+ */
+function thirdGreatest(strArr) {
+    strArr.sort((a, b) => b.length - a.length);
+
+    return strArr[2];
+}
+
+module.exports = thirdGreatest;
diff --git a/easy/third_greatest.test.js b/easy/third_greatest.test.js
@@ -0,0 +1,11 @@
+const thirdGreatest = require('./third_greatest');
+
+describe('thirdGreatest()', () => {
+    test('correctly returns third larget word', () => {
+        expect(thirdGreatest(['hello', 'world', 'before', 'all'])).toBe(
+            'world'
+        );
+
+        expect(thirdGreatest(['hello', 'world', 'after', 'all'])).toBe('after');
+    });
+});
