2.06 Tree

Tree #

No.TitleSolutionDifficultyTimeComplexitySpaceComplexityFavoriteAcceptance
0094Binary Tree Inorder TraversalGoEasyO(n)O(1)72.9%
0095Unique Binary Search Trees IIGoMedium51.5%
0096Unique Binary Search TreesGoMediumO(n^2)O(n)59.2%
0098Validate Binary Search TreeGoMediumO(n)O(1)31.7%
0099Recover Binary Search TreeGoMediumO(n)O(1)50.2%
0100Same TreeGoEasyO(n)O(1)56.3%
0101Symmetric TreeGoEasyO(n)O(1)52.9%
0102Binary Tree Level Order TraversalGoMediumO(n)O(1)63.2%
0103Binary Tree Zigzag Level Order TraversalGoMediumO(n)O(n)55.1%
0104Maximum Depth of Binary TreeGoEasyO(n)O(1)73.1%
0105Construct Binary Tree from Preorder and Inorder TraversalGoMedium60.7%
0106Construct Binary Tree from Inorder and Postorder TraversalGoMedium57.4%
0107Binary Tree Level Order Traversal IIGoMediumO(n)O(1)60.3%
0108Convert Sorted Array to Binary Search TreeGoEasyO(n)O(1)69.0%
0109Convert Sorted List to Binary Search TreeGoMedium57.2%
0110Balanced Binary TreeGoEasyO(n)O(1)48.1%
0111Minimum Depth of Binary TreeGoEasyO(n)O(1)43.5%
0112Path SumGoEasyO(n)O(1)47.6%
0113Path Sum IIGoMediumO(n)O(1)56.6%
0114Flatten Binary Tree to Linked ListGoMediumO(n)O(1)61.1%
0116Populating Next Right Pointers in Each NodeGoMedium59.3%
0124Binary Tree Maximum Path SumGoHardO(n)O(1)38.4%
0129Sum Root to Leaf NumbersGoMediumO(n)O(1)58.6%
0144Binary Tree Preorder TraversalGoEasyO(n)O(1)64.6%
0145Binary Tree Postorder TraversalGoEasyO(n)O(1)66.5%
0173Binary Search Tree IteratorGoMediumO(n)O(1)69.0%
0199Binary Tree Right Side ViewGoMediumO(n)O(1)61.2%
0222Count Complete Tree NodesGoMediumO(n)O(1)57.4%
0226Invert Binary TreeGoEasyO(n)O(1)73.2%
0230Kth Smallest Element in a BSTGoMediumO(n)O(1)69.3%
0235Lowest Common Ancestor of a Binary Search TreeGoMediumO(n)O(1)60.1%
0236Lowest Common Ancestor of a Binary TreeGoMediumO(n)O(1)57.9%
0257Binary Tree PathsGoEasyO(n)O(1)60.5%
0297Serialize and Deserialize Binary TreeGoHard54.9%
0331Verify Preorder Serialization of a Binary TreeGoMedium44.2%
0337House Robber IIIGoMedium53.8%
0341Flatten Nested List IteratorGoMedium61.5%
0404Sum of Left LeavesGoEasyO(n)O(1)56.2%
0429N-ary Tree Level Order TraversalGoMedium70.6%
0437Path Sum IIIGoMediumO(n)O(1)48.8%
0508Most Frequent Subtree SumGoMedium64.3%
0513Find Bottom Left Tree ValueGoMedium66.4%
0515Find Largest Value in Each Tree RowGoMediumO(n)O(n)64.6%
0530Minimum Absolute Difference in BSTGoEasy56.8%
0538Convert BST to Greater TreeGoMedium67.3%
0543Diameter of Binary TreeGoEasy55.9%
0559Maximum Depth of N-ary TreeGoEasy71.6%
0563Binary Tree TiltGoEasy59.4%
0572Subtree of Another TreeGoEasy46.0%
0589N-ary Tree Preorder TraversalGoEasy76.3%
0617Merge Two Binary TreesGoEasy78.5%
0623Add One Row to TreeGoMedium59.4%
0637Average of Levels in Binary TreeGoEasyO(n)O(n)71.6%
0653Two Sum IV - Input is a BSTGoEasy60.9%
0662Maximum Width of Binary TreeGoMedium40.6%
0669Trim a Binary Search TreeGoMedium66.3%
0700Search in a Binary Search TreeGoEasy77.1%
0701Insert into a Binary Search TreeGoMedium74.6%
0703Kth Largest Element in a StreamGoEasy55.5%
0783Minimum Distance Between BST NodesGoEasy56.8%
0834Sum of Distances in TreeGoHard54.2%
0863All Nodes Distance K in Binary TreeGoMedium62.1%
0872Leaf-Similar TreesGoEasy65.2%
0897Increasing Order Search TreeGoEasy78.4%
0938Range Sum of BSTGoEasy85.3%
0958Check Completeness of a Binary TreeGoMedium53.8%
0968Binary Tree CamerasGoHard46.8%
0971Flip Binary Tree To Match Preorder TraversalGoMedium49.9%
0979Distribute Coins in Binary TreeGoMedium72.0%
0987Vertical Order Traversal of a Binary TreeGoHard44.6%
0993Cousins in Binary TreeGoEasyO(n)O(1)54.1%
1022Sum of Root To Leaf Binary NumbersGoEasy73.8%
1026Maximum Difference Between Node and AncestorGoMedium73.4%
1028Recover a Tree From Preorder TraversalGoHard72.8%
1038Binary Search Tree to Greater Sum TreeGoMedium85.4%
1104Path In Zigzag Labelled Binary TreeGoMedium74.9%
1110Delete Nodes And Return ForestGoMedium69.3%
1123Lowest Common Ancestor of Deepest LeavesGoMedium70.6%
1145Binary Tree Coloring GameGoMedium51.4%
1302Deepest Leaves SumGoMedium86.9%
1305All Elements in Two Binary Search TreesGoMedium79.8%
1600Throne InheritanceGoMedium63.7%
1609Even Odd TreeGoMedium53.7%
2096Step-By-Step Directions From a Binary Tree Node to AnotherGoMedium48.8%
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