Add solution #2427

Author: JoshCrozier

README.md

@@ -281,6 +281,7 @@
 2099|[Find Subsequence of Length K With the Largest Sum](./2099-find-subsequence-of-length-k-with-the-largest-sum.js)|Medium|
 2114|[Maximum Number of Words Found in Sentences](./2114-maximum-number-of-words-found-in-sentences.js)|Easy|
 2129|[Capitalize the Title](./2129-capitalize-the-title.js)|Easy|
+2427|[Number of Common Factors](./2427-number-of-common-factors.js)|Easy|
 
 ## License
 

solutions/2427-number-of-common-factors.js

@@ -0,0 +1,22 @@
+/**
+ * 2427. Number of Common Factors
+ * https://leetcode.com/problems/number-of-common-factors/
+ * Difficulty: Easy
+ *
+ * Given two positive integers a and b, return the number of common factors of a and b.
+ *
+ * An integer x is a common factor of a and b if x divides both a and b.
+ */
+
+/**
+ * @param {number} a
+ * @param {number} b
+ * @return {number}
+ */
+var commonFactors = function(a, b) {
+  let count = 0;
+  for (let i = Math.min(a, b); i > 0; i--) {
+    if (a % i === 0 && b % i === 0) count++;
+  }
+  return count;
+};