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GATE CS 2022: Data Structure-4 (App update required to attempt this test)
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Question 1
Which of the following variable cannot be used by switch-case statement?
Question 2
What will be the output of the program?
Question 3
The post order traversal of binary search tree is given by 2, 7, 6, 10, 9, 8, 15, 17, 20, 19, 16, 12. The height of the tree is ________.
Question 4
With given preorder and 5 labelled nodes, number of possible binary trees are ____.
Question 5
Consider the following C function:
int gradeup(int n)
{
auto int r = 0;
if (n <=0) return 1;
if (n > 3)
{
r = n;
return gradeup(n – 2) + r;
}
return gradeup(n – 1) + r;
}
What is the value of gradeup(7)?
Question 6
Evaluate the following postfix expression?
6 7 + 9 + 11 / 6 * 8 7 + *
6 7 + 9 + 11 / 6 * 8 7 + *
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