refactor 677

Author: fishercoder1534

src/main/java/com/fishercoder/solutions/_677.java

@@ -6,22 +6,20 @@
 /**
  * 677. Map Sum Pairs
  *
- *  Implement a MapSum class with insert, and sum methods.
-
- For the method insert, you'll be given a pair of (string, integer).
- The string represents the key and the integer represents the value.
- If the key already existed, then the original key-value pair will be overridden to the new one.
-
- For the method sum, you'll be given a string representing the prefix,
- and you need to return the sum of all the pairs' value whose key starts with the prefix.
-
- Example 1:
-
- Input: insert("apple", 3), Output: Null
- Input: sum("ap"), Output: 3
- Input: insert("app", 2), Output: Null
- Input: sum("ap"), Output: 5
-
+ * Implement a MapSum class with insert, and sum methods.
+ *
+ * For the method insert, you'll be given a pair of (string, integer).
+ * The string represents the key and the integer represents the value.
+ * If the key already existed, then the original key-value pair will be overridden to the new one.
+ *
+ * For the method sum, you'll be given a string representing the prefix,
+ * and you need to return the sum of all the pairs' value whose key starts with the prefix.
+ *
+ * Example 1:
+ * Input: insert("apple", 3), Output: Null
+ * Input: sum("ap"), Output: 3
+ * Input: insert("app", 2), Output: Null
+ * Input: sum("ap"), Output: 5
  */
 public class _677 {
     public static class Solution1 {