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Urban Ladder Written Test.

May 19, 2015 by Dhaval Dave

I have given Urban Ladder Online Test and my experience and questions are as below.

MCQ ROUND

Q1) An implementation of a queue Q, using two stacks S1 and S2, is given below:

void insert(Q, x) {
   push (S1, x);
} 
void delete(Q){
   if(stack-empty(S2)) then 
      if(stack-empty(S1)) then {
          print(“Q is empty”);
          return;
      }
      else while (!(stack-empty(S1))){
          x=pop(S1);
          push(S2,x);
      }
   x=pop(S2);
}

Let n insert and m (<=n) delete operations be performed in an arbitrary order on an empty queue Q. Let x and y be the number of push and pop operations performed respectively in the process. Which one of the following is true for all m and n?

Max. Marks 10.0
Q2)  If f, r are the front, rear indices respectively in a circular queue (implemented as array) then the condition (( f – r + size) % size == 1) && ((f != 0) || (r != -1)) represents
Max. Marks 10.0
 Q3)  Group A consists of X students and their total age is 221 and their average is an integer. When Group A is merged with Group B with twice the number of students (number of students between 30 and 40), average age of Group B is reduced by 1, what is the original age of Group B.
Max. Marks 10.0
Q4) What will be output when you will execute following c code?
#include<stdio.h>
#define var 3
int main(){
char *cricket[var+~0]={"clarke","kallis"};
char *ptr=cricket[1+~0];
printf("%c",*++ptr);
return 0;
}
Max. Marks 10.0

CODING ROUND

1 ) Print Fizz Buzz 

2) Wordify

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