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Dive deep into the fascinating world of Data Structures and Algorithms with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Data Structures and Algorithms, a crucial aspect of GATE CSE Exam. In this section, you will encounter a diverse range of MCQs that cover various aspects of Data Structures and Algorithms, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within GATE CSE Exam.
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Data Structures and Algorithms MCQs | Page 4 of 30
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If a stack S contains the integers 2, -3, 2, -1, 2 in order from bottom to top, what is f(S)?
#include
#define EOF -1
void push (int); /* push the argument on the stack */
int pop (void); /* pop the top of the stack */
void flagError ();
int main ()
{ int c, m, n, r;
while ((c = getchar ()) != EOF)
{ if (isdigit (c) )
push (c);
else if ((c == '+') || (c == '*'))
{ m = pop ();
n = pop ();
r = (c == '+') ? n + m : n*m;
push (r);
}
else if (c != ' ')
flagError ();
}
printf("% c", pop ());
}
What is the output of the program for the following input ? 5 2 * 3 3 2 + * +void fun(Queue *Q)
{
Stack S; // Say it creates an empty stack S
// Run while Q is not empty
while (!isEmpty(Q))
{
// deQueue an item from Q and push the dequeued item to S
push(&S, deQueue(Q));
}
// Run while Stack S is not empty
while (!isEmpty(&S))
{
// Pop an item from S and enqueue the poppped item to Q
enQueue(Q, pop(&S));
}
}
What does the above function do in general?
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