add youtube link for 100

fishercoder1534 · fishercoder1534 · commit c840a3ed6d34 · 2019-12-11T10:33:53.000-08:00
diff --git a/README.md b/README.md
@@ -716,7 +716,7 @@ _If you like this project, please leave me a star._ &#9733;
 |103|[Binary Tree Zigzag Level Order Traversal](https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_103.java)| O(n)|O(h) | |Medium| BFS,DFS
 |102|[Binary Tree Level Order Traversal](https://leetcode.com/problems/binary-tree-level-order-traversal/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_102.java)| O(n)|O(h) | |Medium| BFS
 |101|[Symmetric Tree](https://leetcode.com/problems/symmetric-tree/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_101.java)| O(n)|O(h) | |Easy| DFS
-|100|[Same Tree](https://leetcode.com/problems/same-tree/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_100.java)| O(n)|O(h) | |Easy| DFS
+|100|[Same Tree](https://leetcode.com/problems/same-tree/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_100.java)| O(n)|O(h) | [:tv:](https://www.youtube.com/watch?v=2Pe6e0KbgFI)|Easy| DFS
 |99|[Recover Binary Search Tree](https://leetcode.com/problems/recover-binary-search-tree/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_99.java) | O(?) | O(?) | |Hard |
 |98|[Validate Binary Search Tree](https://leetcode.com/problems/validate-binary-search-tree/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_98.java) | O(n) | O(h) | |Medium | DFS/Recursion
 |97|[Interleaving String](https://leetcode.com/problems/interleaving-string/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_97.java)| O(?)|O(?) | |Hard| DP
