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#	Problem	Status	Practice On Practice	Companies
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1	Validate Binary Search Tree			A A B B A Validate Binary Search Tree · 10 Companies A Amazon A Apple B Bloomberg B ByteDance F Facebook G Google LinkedIn M Meta M Microsoft U Uber
2	Kth Smallest Element in a BST			A A B F A Kth Smallest Element in a BST · 7 Companies A Amazon A Apple B Bloomberg F Facebook G Google M Microsoft U Uber
3	Lowest Common Ancestor of a Binary Search Tree			A A B F A Lowest Common Ancestor of a Binary Search Tree · 7 Companies A Amazon A Apple B Bloomberg F Facebook G Google LinkedIn M Microsoft
4	Binary Search Tree Iterator			A A F G A Binary Search Tree Iterator · 6 Companies A Amazon A Apple F Facebook G Google LinkedIn M Microsoft
5	Trim a Binary Search Tree			A B F G A Trim a Binary Search Tree · 5 Companies A Amazon B Bloomberg F Facebook G Google M Microsoft
6	Delete Node in a BST			A A F G A Delete Node in a BST · 5 Companies A Adobe A Amazon F Facebook G Google M Microsoft
7	Convert Sorted List to Binary Search Tree			A A B F A Convert Sorted List to Binary Search Tree · 6 Companies A Amazon A Apple B Bloomberg F Facebook G Google M Microsoft
8	Construct Binary Search Tree from Preorder Traversal			A B F M A Construct Binary Search Tree from Preorder Traversal · 4 Companies A Amazon B Bloomberg F Facebook M Microsoft
9	Predecessor And Successor			A A F M A Predecessor And Successor · 4 Companies A Accenture A Amazon F Flipkart M Microsoft
10	Binary Search Tree to Greater Sum Tree			A G M A Binary Search Tree to Greater Sum Tree · 3 Companies A Amazon G Google M Microsoft
11	Balance a Binary Search Tree			A B F G A Balance a Binary Search Tree · 5 Companies A Amazon B Bloomberg F Facebook G Google M Microsoft
12	Preorder Traversal And Bst			A F M S A Preorder Traversal And Bst · 4 Companies A Amazon F Flipkart M Microsoft S Snapdeal