add 2427

Author: fishercoder1534

README.md

@@ -8,7 +8,8 @@ _If you like this project, please leave me a star._ ★
 
 | #    |      Title     | Solutions                                                                                                                                | Video                                                                         | Difficulty                       | Tag                  
 |------|----------------|------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------|----------------------------------|-------------
-| 2432 |[The Employee That Worked on the Longest Task](https://leetcode.com/problems/the-employee-that-worked-on-the-longest-task/)| [Java](../master/src/main/java/com/fishercoder/solutions/_2432.java)                                                                       || Easy                                                                          ||
+| 2432 |[The Employee That Worked on the Longest Task](https://leetcode.com/problems/the-employee-that-worked-on-the-longest-task/)| [Java](../master/src/main/java/com/fishercoder/solutions/_2432.java)                                                                     || Easy                                                                          ||
+| 2427 |[Number of Common Factors](https://leetcode.com/problems/number-of-common-factors/)| [Java](../master/src/main/java/com/fishercoder/solutions/_2427.java)                                                                     || Easy                                                                          ||
 | 2399 |[Check Distances Between Same Letters](https://leetcode.com/problems/check-distances-between-same-letters/)| [Java](../master/src/main/java/com/fishercoder/solutions/_2399.java)                                                                     || Medium                                                                        ||
 | 2395 |[Find Subarrays With Equal Sum](https://leetcode.com/problems/find-subarrays-with-equal-sum/)| [Java](../master/src/main/java/com/fishercoder/solutions/_2395.java)                                                                     || Easy                                                                          ||
 | 2380 |[Time Needed to Rearrange a Binary String](https://leetcode.com/problems/time-needed-to-rearrange-a-binary-string/)| [Java](../master/src/main/java/com/fishercoder/solutions/_2380.java)                                                                     || Medium                                                                        ||

src/main/java/com/fishercoder/solutions/_2427.java

@@ -0,0 +1,17 @@
+package com.fishercoder.solutions;
+
+public class _2427 {
+    public static class Solution1 {
+        public int commonFactors(int a, int b) {
+            int ans = 1;
+            int num = 2;
+            while (num <= a && num <= b) {
+                if (a % num == 0 && b % num == 0) {
+                    ans++;
+                }
+                num++;
+            }
+            return ans;
+        }
+    }
+}