Category Archives: programming

MCQ on Stack and Queue – Data Structure Practice Questions

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MCQ on stack and queue data structure. Both Stack and Queue data structure is very important in computer science. In this tutorial, you are going to learn about stack and queue data structure. Also you’ll find MCQ on stack and queues.

In my previous post, i have discussed how to implement stack and queue data structure.

Stack program in C using Array.

Queue data structure and their implementation.

The purpose of this objective questions is to test how well you understand the concept of stack and queue.

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Find the Second Largest Number in an Array

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Let’s discuss a problem to find the second largest number in an array.

Given an unsorted array of integers, write a code to find the second largest number in an array.

For example –

Input – arr[] = { 4, 1, 5, 2, 8, 0, 3, 55}

Output – 8

The second max element in this array is 8.

Before checking the solution, let’s think for a moment, how do you approach this problem?  There are multiple ways to solve this problem. Which approach you prefer and why? At the end of this tutorial, I have shared the link to the video tutorial.

In this tutorial, I am going to cover following topics –

  • How to find the second largest number in an array using sorting.
  • C program to find the second largest number in an array.
  • C++ program to find the second largest number in an array.
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