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258. Add Digits 496. Next Greater Element I 538. Convert BST to Greater Tree 453. Minimum Moves to Equal Array Elements 463. Island Perimeter 637. Average of Levels in Binary Tree 669. Trim a Binary Search Tree 389. Find the Difference 653. Two Sum IV - Input is a BST 226. Invert Binary Tree 448. Find All Numbers Disappeared in an Array
258. Add Digits
496. Next Greater Element I
538. Convert BST to Greater Tree
453. Minimum Moves to Equal Array Elements
463. Island Perimeter
637. Average of Levels in Binary Tree
669. Trim a Binary Search Tree
389. Find the Difference
653. Two Sum IV - Input is a BST
226. Invert Binary Tree
448. Find All Numbers Disappeared in an Array