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GATE | Gate IT 2008 | Question 70
A Binary Search Tree (BST) stores values in the range 37 to 573. Consider the following sequence of keys.
I. 81, 537, 102, 439, 285, 376, 305
II. 52, 97, 121, 195, 242, 381, 472
III. 142, 248, 520, 386, 345, 270, 307
IV. 550, 149, 507, 395, 463, 402, 270
Which of the following statements is TRUE?
I. 81, 537, 102, 439, 285, 376, 305
II. 52, 97, 121, 195, 242, 381, 472
III. 142, 248, 520, 386, 345, 270, 307
IV. 550, 149, 507, 395, 463, 402, 270
Which of the following statements is TRUE?
(A)
I, II and IV are inorder sequences of three different BSTs
(B)
I is a preorder sequence of some BST with 439 as the root
(C)
II is an inorder sequence of some BST where 121 is the root and 52 is a leaf
(D)
IV is a postorder sequence of some BST with 149 as the root
Answer
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