1500+ Intern Interview Questions and Answers

Determining the price to pay to a housing society for their garbage collection and sale to 5 different vendors while making a 20% profit.

• Calculate the cost of collecting and transporting the garbage

• Research the market prices for each type of waste material

• Determine the profit margin required

• Calculate the selling price to each vendor based on market prices and profit margin

• Determine the price to pay to the society members based on the cost and profit margin

• Consider negotiating...read more

I am comfortable with multiple programming languages including Java, Python, and JavaScript.

• Proficient in Java for backend development

• Experienced in Python for data analysis and machine learning

• Skilled in JavaScript for frontend development

• Familiar with SQL for database management

• Comfortable with C++ for competitive programming

Create a digital marketing campaign targeting tourists and potential customers outside Jaipur.

• Create a website and social media pages to showcase the unique perfumes and their ingredients.

• Partner with local hotels and travel agencies to promote the perfumes to tourists.

• Offer discounts or promotions for customers who refer their friends and family.

• Create a loyalty program to incentivize repeat customers.

• Consider expanding the product line to include other unique scents.

• Collect...read more

The exact reason for facing losses cannot be determined without further analysis.

• Further analysis is needed to identify the root cause of the losses.

• Economic downturn, new competitors, and internal problems are all potential factors.

• Examples of internal problems could include poor management, inefficient processes, or high overhead costs.

The task is to count the number of subsequences in an array where all elements are equal.

• Iterate through the array and count the frequency of each element.

• For each element, calculate the number of subsequences using the formula (2^frequency - 1).

• Multiply the counts for each element to get the total number of subsequences.

• Print the result modulo 10^9 + 7.

Find the maximum difference between any two elements in an array and determine if it is even or odd.

• Iterate through the array to find the maximum and minimum elements

• Calculate the difference between the maximum and minimum elements

• Check if the difference is even or odd and return the result

Calculate the number of mismatching bits between two given integers in their binary representation.

• Convert the integers to binary representation using bitwise operations.

• Count the number of differing bits by comparing the binary representations.

• Return the count of mismatching bits for each test case.

Suggested innovative ideas to increase revenues for an e-commerce website selling jewellery, fashion products and apparel majorly for women.

• Introduce a loyalty program to retain customers and encourage repeat purchases

• Collaborate with social media influencers to promote the products and increase brand awareness

• Offer personalized styling services to customers to enhance their shopping experience

• Expand the product range to include men's fashion and accessories

• Implement a referr...read more

Implement a function to delete a node with a given value from a binary search tree (BST).

• Traverse the BST to find the node with the value K to be deleted.

• Handle different cases like node with no children, one child, or two children.

• Update the pointers of the parent node and child nodes accordingly.

• Return the root of the modified BST after deletion.

Find the unique element in a sorted array where all other elements appear twice.

• Iterate through the array and XOR all elements to find the unique element.

• Use a hash set to keep track of elements and find the unique one.

• Sort the array and check adjacent elements to find the unique one.

Company A has to decide whether to produce 1 crore beer bottles for customer B in case of increased demand due to IPL.

• Consider the cost of producing extra bottles versus the cost of buying from a third party.

• Evaluate the risk of buying a new machine that may be defective.

• Assess the probability of increased demand from customer B due to IPL.

• Analyze the potential impact on profits and market share.

• Consider the long-term implications of the decision on the company's growth and s...read more

Find frequency of 2 in sorted array of integers in log(n) time.

• Use binary search to find first and last occurrence of 2 in array.

• Calculate frequency by subtracting last index from first index and adding 1.

• Time complexity is O(log(n)).

Check if a given singly linked list of integers is a palindrome or not.

• Traverse the linked list to find the middle element using slow and fast pointers.

• Reverse the second half of the linked list.

• Compare the first half with the reversed second half to determine if it's a palindrome.

Find all nodes at distance K from a given node in a binary tree.

• Perform a depth-first search starting from the target node to find nodes at distance K.

• Use a recursive function to traverse the tree and keep track of the distance from the target node.

• Maintain a set to store visited nodes and avoid revisiting them.

• Return the list of nodes found at distance K from the target node.

• Example: For the given input tree, target node 5, and K = 2, the output should be [7, 4, 0, 8].

I am currently located in Varanasi, Lanka, Uttar Pradesh.

• I am residing in the historic city of Varanasi, also known as Kashi.

• Lanka is a locality within Varanasi, situated on the banks of the river Ganges.

• Uttar Pradesh is a state in northern India, known for its rich cultural heritage.

Given a binary tree and a specific node, find its inorder successor in the tree.

• Perform an inorder traversal of the binary tree to find the successor node.

• If the given node has a right child, the successor is the leftmost node in the right subtree.

• If the given node does not have a right child, backtrack to find the ancestor whose left child is the given node.

Remove keys outside given range from a Binary Search Tree while keeping it valid.

• Traverse the BST in inorder and remove nodes outside the specified range

• Recursively check left and right subtrees for nodes to remove

• Update pointers to maintain the validity of the BST

• Return the inorder traversal of the adjusted BST

My strong point in technical knowledge is programming languages like C, Java, and Python. I have experience with pointers, looping statements, and arrays.

• I have a strong understanding of pointers in C and how they are used to store memory addresses.

• I have experience using pointers in Java to manipulate objects and data structures.

• I have used pointers in Python to create efficient algorithms for data processing.

• I am familiar with the concept of null pointers and how to handle ...read more

I rate my programming skills at 8 out of 10.

• I have experience in multiple programming languages such as Java, Python, and C++.

• I have completed several projects including a web application and a mobile app.

• I am constantly learning and improving my skills through online courses and personal projects.

Find the maximum frequency integer to the right of each index in an array of numbers.

• Create a frequency map of the array.

• Iterate through the array and for each index, find the maximum frequency integer to the right using the frequency map.

• If there are no integers to the right, return -1.

To determine if a system is compromised or vulnerable, conduct regular vulnerability scans and penetration testing.

• Perform regular vulnerability scans using tools like Nessus or OpenVAS

• Conduct penetration testing to simulate attacks and identify vulnerabilities

• Monitor system logs for suspicious activity

• Stay up-to-date with security patches and updates

• Use intrusion detection and prevention systems

• Perform code reviews and security audits

• Educate employees on security best practi...read more

Bubble Sort algorithm to sort an array of non-negative integers in non-decreasing order.

• Implement Bubble Sort algorithm to sort the array in place

• Loop through the array and compare adjacent elements, swapping if necessary

• Repeat the process until the array is sorted

• Time complexity of O(n^2) in worst case scenario

The N Queens Problem involves finding all possible placements of N queens on an N x N chessboard where no two queens threaten each other.

• Use backtracking algorithm to explore all possible configurations.

• Keep track of rows, columns, and diagonals to ensure queens do not attack each other.

• Generate valid configurations recursively and print them out.

Debt market refers to the financial market where investors buy and sell debt securities, such as bonds and loans.

• Debt market is a part of the capital market where debt securities are traded.

• It provides a platform for companies, governments, and individuals to borrow or lend money.

• Debt securities include bonds, treasury bills, commercial papers, and mortgage-backed securities.

• Investors in the debt market earn interest on their investments.

• Debt market helps in raising capital f...read more

Yes, the pharma company should go ahead and sell the formula and rights to a potential buyer.

• Selling the formula and rights can generate significant revenue for the company.

• The potential buyer can further invest in research and development to bring the drug to market faster.

• The company can focus on other drug development projects with the funds obtained from the sale.

• The buyer may have the necessary resources and expertise to successfully market and distribute the drug global...read more

Transient analysis of capacitors in series with a switch closing at t>0 and initial voltage of 3V.

• Capacitors in series share the same charge but have different voltages across them.

• The total voltage across capacitors in series is the sum of individual voltages.

• If two capacitors, C1 and C2, are in series, V_total = V1 + V2.

• For example, if C1 has 2V and C2 has 1V, then V_total = 2V + 1V = 3V.

• When the switch closes at t=0, the capacitors will start charging based on the applied ...read more

Calculate cost of building a school on land vs selling the land by estimating cash flows in 10 years.

• Calculate cost of land, construction, staffing, and maintenance for school

• Estimate revenue from tuition fees and other sources for 10 years

• Compare cash flows with future worth of selling price of land

• Consider long-term benefits of building a school for community development

• Evaluate risks and uncertainties in both options