refactor 278

fishercoder1534 · fishercoder1534 · commit 8802fb575f5d · 2020-02-16T10:47:03.000-08:00
diff --git a/src/main/java/com/fishercoder/solutions/_278.java b/src/main/java/com/fishercoder/solutions/_278.java
@@ -6,11 +6,20 @@
  * You are a product manager and currently leading a team to develop a new product.
  * Unfortunately, the latest version of your product fails the quality check.
  * Since each version is developed based on the previous version, all the versions after a bad version are also bad.
+ *
  * Suppose you have n versions [1, 2, ..., n] and you want to find out the first bad one,
  * which causes all the following ones to be bad.
  *
  * You are given an API bool isBadVersion(version) which will return whether version is bad.
- * Implement a function to find the first bad version. You should minimize the number of calls to the API.*/
+ * Implement a function to find the first bad version. You should minimize the number of calls to the API.
+ *
+ * Example:
+ * Given n = 5, and version = 4 is the first bad version.
+ * call isBadVersion(3) -> false
+ * call isBadVersion(5) -> true
+ * call isBadVersion(4) -> true
+ * Then 4 is the first bad version.
+ * */
 public class _278 {
 
 	public static class Solution1 {
