Merge branch 'master' of https://github.com/azl397985856/leetcode

kevin-ke · Jun 25, 2019 · 39e2696 · 39e2696
2 parents 5c47873 + 83fbb65
commit 39e2696
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/problems/144.binary-tree-preorder-traversal.md b/problems/144.binary-tree-preorder-traversal.md
@@ -107,7 +107,6 @@ var preorderTraversal = function(root) {
     if (!root) return [];
     const ret = [];
     const stack = [root];
-    let left = root.left;
     let t = stack.pop();
 
     while(t) {