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1
GATE CSE 2000
MCQ (Single Correct Answer)
+1
-0.3
Consider the following nested representation of binary trees: (X Y Z) indicates Y and Z are the left and right sub stress, respectively, of node X. Note that Y and Z may be NULL, or further nested. Which of the following represents a valid binary tree?
A
(1 2 (4 5 6 7))
B
(1 (2 3 4) 5 6) 7)
C
(1 (2 3 4)(5 6 7))
D
(1 (2 3 NULL) (4 5))
2
GATE CSE 1998
MCQ (Single Correct Answer)
+1
-0.3
Which of the following statements is false?
A
A tree with a n nodes has (n – 1) edges
B
A labeled rooted binary tree can be uniquely constructed given its postorder and preorder traversal results.
C
A complete binary tree with n internal nodes has (n + 1) leaves.
D
The maximum number of nodes in a binary tree of height h is ( 2h+1 - 1 ).
3
GATE CSE 1996
MCQ (Single Correct Answer)
+1
-0.3
Which of the following sequences denotes the post order traversal sequence of the tree of previous question?
A
f e g c d b a
B
g c b d a f e
C
g c d b f e a
D
f e d g c b a
4
GATE CSE 1996
MCQ (Single Correct Answer)
+1
-0.3
In the balanced binary tree in Fig. given below, how many nodes will become unbalanced when a node is inserted as a child of the node “g”? GATE CSE 1996 Data Structures - Trees Question 89 English
A
1
B
3
C
7
D
8
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