refactor 623

Author: fishercoder1534

src/main/java/com/fishercoder/solutions/_623.java

@@ -2,72 +2,6 @@
 
 import com.fishercoder.common.classes.TreeNode;
 
-/**
- * 623. Add One Row to Tree
- *
- * Given the root of a binary tree,
- * then value v and depth d,
- * you need to add a row of nodes with value v at the given depth d.
- * The root node is at depth 1.
-
- The adding rule is: given a positive integer depth d,
- for each NOT null tree nodes N in depth d-1,
- create two tree nodes with value v as N's left subtree root and right subtree root.
- And N's original left subtree should be the left subtree of the new left subtree root,
- its original right subtree should be the right subtree of the new right subtree root.
- If depth d is 1 that means there is no depth d-1 at all,
- then create a tree node with value v as the new root of the whole
- original tree, and the original tree is the new root's left subtree.
-
- Example 1:
- Input:
- A binary tree as following:
-      4
-    /   \
-   2     6
-  / \   /
- 3   1 5
-
- v = 1
-
- d = 2
-
- Output:
-       4
-      / \
-     1   1
-    /     \
-   2       6
-  / \     /
- 3   1   5
-
-
- Example 2:
- Input:
- A binary tree as following:
-    4
-    /
-   2
-  / \
- 3   1
-
- v = 1
-
- d = 3
-
- Output:
-        4
-       /
-      2
-     / \
-    1   1
-   /     \
-  3       1
-
- Note:
- The given d is in range [1, maximum depth of the given tree + 1].
- The given binary tree has at least one tree node.
- */
 public class _623 {
 
     public static class Solution1 {