Sri Hari: Batch-5/Neetcode-ALL/Added-articles (#3822)

* Batch-5/Neetcode-ALL/Added-articles * Batch-5/Neetcode-ALL/Added-articles * Batch-5/Neetcode-ALL/Added-articles
neetcode-gh · Jan 22, 2025 · 1063ce2 · 1063ce2
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diff --git a/articles/binary-tree-from-preorder-and-inorder-traversal.md b/articles/binary-tree-from-preorder-and-inorder-traversal.md
@@ -240,11 +240,11 @@ class Solution {
 ### Time & Space Complexity
 
 * Time complexity: $O(n ^ 2)$
-* Space complexity: $O(n ^ 2)$
+* Space complexity: $O(n)$
 
 ---
 
-## 2. Hash Map
+## 2. Hash Map + Depth First Search
 
 ::tabs-start
 
@@ -780,4 +780,4 @@ class Solution {
 ### Time & Space Complexity
 
 * Time complexity: $O(n)$
-* Space complexity: $O(n)$
+* Space complexity: $O(n)$ for recursion stack.