update 236: add a solution link

lazzzis · web-flow · commit 7066a84aa3a8 · 2018-07-20T22:01:20.000-04:00
diff --git a/236/Solution.java b/236/Solution.java
@@ -1,3 +1,5 @@
+// https://www.youtube.com/watch?v=WqNULaUhPCc
+
 class Solution {
     public TreeNode lowestCommonAncestor(TreeNode root, TreeNode p, TreeNode q) {
         if (root == null || root == p || root == q) return root;

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,5 @@`
	`1`	`+// https://www.youtube.com/watch?v=WqNULaUhPCc`
	`2`	`+`
`1`	`3`	`class Solution {`
`2`	`4`	`public TreeNode lowestCommonAncestor(TreeNode root, TreeNode p, TreeNode q) {`
`3`	`5`	`if (root == null \|\| root == p \|\| root == q) return root;`