Diamonds On Call Interview Questions and Answers

Q1. 2Sum DSA leetcode problem
Ans. 
2Sum problem involves finding two numbers in an array that add up to a specific target.
• Use a hashmap to store the difference between the target and each element in the array.

• Iterate through the array and check if the current element's complement exists in the hashmap.

• Return the indices of the two numbers that add up to the target.
Answered by AI
Add your answer
Q2. Spiral traversal of a Binary tree
Ans. 
Spiral traversal of a Binary tree involves visiting nodes level by level alternating between left to right and right to left.
• Start by pushing the root node into a queue.

• While the queue is not empty, pop a node, print its value, and push its children into the queue.

• Alternate between popping nodes from the queue and printing their values in a spiral manner.
Answered by AI
Add your answer

Q1. A problem similar to coin change problem of leetcode
Add your answer
Q2. Aggressive cows problem
Ans. 
The aggressive cows problem involves finding the maximum distance between cows in a field while ensuring they are not too close to each other.
• Use binary search to find the maximum distance between cows.

• Sort the cows' positions and check if a certain distance is feasible.

• Consider the constraints of the problem such as the number of cows and the size of the field.
Answered by AI
Add your answer

Q1. Basic behavioural questions like why I am looking for a change and would I be able to handle the increased work pressure as I was shifting from MNC to a startup
Add your answer

Technical round 2 questions

Contracts review and abstraction

Q1. Contracts and essential elements
Add your answer

Q1. Education Details
Add your answer
Q2. Skills, Strength
Add your answer

CRUD Application using Angular

Q1. Node.js, OOPs concepts
Add your answer

Q1. Advanced formulas of Excel
Ans. 
Advanced Excel formulas are complex functions used for data analysis and manipulation.
• Advanced formulas in Excel include VLOOKUP, INDEX-MATCH, SUMIFS, COUNTIFS, and IFERROR.

• These formulas are used for tasks like data lookup, conditional calculations, and summarizing data.

• For example, VLOOKUP is used to search for a value in a table and return a corresponding value from another column.
Answered by AI
Add your answer

Core HTML, CSS and JS

JS deep dive and react

Q1. Mimic Promise.all, Array.flat, OTP Component etc
Add your answer

Problem solving approach check

Q1. Case study and problem solving
Add your answer
Q2. Root cause Analysis
Add your answer