Update 543_diameter_of_binary_tree.md

Joseph Luce · web-flow · commit 9953c154c352 · 2019-08-01T09:07:57.000-07:00
diff --git a/leetcode/easy/543_diameter_of_binary_tree.md b/leetcode/easy/543_diameter_of_binary_tree.md
@@ -2,9 +2,9 @@
 
 ## Best Solution
 - Runtime: O(N)
-- Space: O(D)
+- Space: O(H)
 - N = Number of elements in tree
-- D = Depth of Tree
+- H = Height of Tree
 
 Take this binary tree example:
 ```
