JSC Institute Interview Questions and Answers

Create a program to count lowercase alphabets, digits, and white spaces in user input until '$' is encountered.

• Read characters from input stream until '$' is encountered

• Count lowercase alphabets, digits, and white spaces separately

• Print the counts of each character type as three integers separated by spaces

Detect if a singly linked list forms a cycle by checking if a node's next pointer points back to a previous node.

• Use Floyd's Tortoise and Hare algorithm to detect a cycle in O(N) time complexity and O(1) space complexity.

• Start with two pointers, slow and fast, moving at different speeds. If they meet at some point, there is a cycle.

• If the fast pointer reaches the end of the list (null), there is no cycle.

• Check if the next pointer of each node points to a previously visited no...read more

Find the height of a Binary Tree given its Inorder and Level Order traversals without constructing it.

• Use the properties of Inorder and Level Order traversals to determine the height of the Binary Tree.

• The height of a Binary Tree is the number of edges on the longest path from the root to a leaf node.

• Consider edge cases like a single node tree or empty tree while calculating the height.

Implement merge sort algorithm to sort a singly linked list of integers.

• Divide the linked list into two halves using slow and fast pointers.

• Recursively sort the two halves.

• Merge the sorted halves using a merge function.

• Handle the base case of empty or single node list.

• Ensure the termination of the linked list with -1 at the end.

• Example: For input 3 1 2 -1, output should be 1 2 3 -1.

The task is to return the spiral path of elements in a given matrix.

• Iterate through the matrix in a spiral path by adjusting the boundaries at each step.

• Keep track of the direction of traversal (right, down, left, up) to cover all elements.

• Handle edge cases like when the matrix is a single row or column.

• Implement a function that takes the matrix dimensions and elements as input and returns the spiral path.

Determine if a square matrix is symmetric by checking if its transpose is equal to itself.

• Iterate through the matrix and compare each element with its corresponding element in the transpose

• If any pair of elements are not equal, return false immediately

• If all pairs are equal, return true at the end

A responsive website is one that adapts to different screen sizes and devices.

• Uses flexible layouts and images

• Uses media queries to adjust styles based on screen size

• Provides optimal user experience on all devices

• Examples: Amazon, Netflix, and Google

Design a system for real-time monitoring of temperature and humidity in a warehouse.

• Utilize IoT sensors to collect temperature and humidity data

• Implement a centralized database to store the data

• Develop a web-based dashboard for real-time monitoring

• Set up alerts for abnormal temperature or humidity levels