Software Engineer

You have been given an integer 'N'.

Your task is to return true if it is a power of two. Otherwise, return false.

An integer 'N' is a power of two, if it can be expressed as 2 ^ 'K' where 'K' is an integer.

For example:

'N' = 4,
4 can be represented as 2^2. So, 4 is the power of two, and hence true is our answer.

What will be output of below code snippet#include int *fun(){      int x = 5;      return &x;}int main(){      int *p = fun();      printf("%d\n", *p)      return 0;}

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You have been given an array/list 'ARR' of integers. Your task is to find the second largest element present in the 'ARR'.

Note:

a) Duplicate elements may be present.

b) If no such element is present return -1.

Example:

Input: Given a sequence of five numbers 2, 4, 5, 6, 8.

Output:  6

Explanation:
In the given sequence of numbers, number 8 is the largest element, followed by number 6 which is the second-largest element. Hence we return number 6 which is the second-largest element in the sequence.

Given a singly linked list of 'N' nodes. The objective is to determine the middle node of a singly linked list. However, if the list has an even number of nodes, we return the second middle node.

Note:

1. If the list is empty, the function immediately returns None because there is no middle node to find.
2. If the list has only one node, then the only node in the list is trivially the middle node, and the function returns that node.

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Given two candles. Each of them burns for one hour. They burn unevenly in different parts though. In addition, let’s have a box of matches. Measure 45 minutes and 15 minutes.

You have been given a singly Linked List of 'N' nodes with integer data and an integer 'K'.

Your task is to remove the 'K'th node from the end of the given Linked List and return the head of the modified linked list.

Example:

Input : 1 -> 2 -> 3 -> 4 -> 'NULL'  and  'K' = 2
Output: 1 -> 2 -> 4 -> 'NULL'
Explanation:
After removing the second node from the end, the linked list become 1 -> 2 -> 4 -> 'NULL'.

There is a song concert going to happen in the city. The price of each ticket is equal to the number obtained after reversing the bits of a given 32 bits unsigned integer ‘n’.