Kohinoor Asiana Hotel Full Stack Developer Interview Questions and Answers

Round duration - 90 minutes
Round difficulty - Medium

The test happened at 9 PM, and the duration was of 90 mins. The test was held on Codility platform.

Q1. Reach the destination
Given a source point (sx, sy) and a destination point (dx, dy), the task is to check if it is possible to reach the destination point using the following valid moves:
(a, b) -> (a...read more
Ans. Brute force approach
The naive approach to solve this problem is to consider each and every possible move until we reach the destination.
 
This can be done using recursion. Below is the algorithm:
 
• Check for the bases:
  • If the source and destination coordinates are the same, return true.
  • Return false, if the x (or y) coordinate of source point is greater than the x (or y) coordinate of the destination point. As the...read more
Answered by CodingNinjas
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Q2. Circular Move
You have a robot currently standing at the origin (0, 0) of a two-dimensional grid and facing north direction. You are given a sequence of moves for the robot in the form of a string of size...read more
Ans. Optimal Approach
Initialize a variable ‘direction’ with 0 which means that the robot is initially facing towards the north.
direction: 0 -> Robot is facing towards the North
direction: 1 -> Robot is facing towards the West 
direction: 2 -> Robot is facing towards the South 
direction: 3 -> Robot is facing towards the West
 
Initialize two variables ‘x’ and ‘y’ as 0. They will represent the position ...read more
Answered by CodingNinjas
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Q3. Buy and Sell Stock
You are Harshad Mehta’s friend. He told you the price of a particular stock for the next ‘N’ days. You can either buy or sell a stock. Also, you can only complete at most 2-transactions....read more
Ans. Recursion
This problem can be solved by solving its subproblems and then combining the solutions of the solved subproblems to solve the original problem. We will do this using recursion.
Basically, we have to buy the stock at the minimum possible price and sell at the maximum possible price, keeping in mind that we have to sell the stock before buying it again.
 
 
Below is the detailed algorithm: 
 
1. Call ...read more
Answered by CodingNinjas
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Round duration - 45 minutes
Round difficulty - Easy

The timing for this round was around 10 AM. How to optimize website assets loading? Explain Hoisting in javascript.

Q1. Number Of Pairs With Given Sum
You have been given an integer array/list(arr) and a number 'Sum'. Find and return the total number of pairs in the array/list which when added, results equal to the ...read more
Ans. Brute Force Approach
• Initialize the ans = 0
• Run two loops first from i = 0 to n-1 and second from j = i+1 to  n-1 and if arr[i] + arr[j] == Sum then increase the ans by 1.
• Return ans
Space Complexity: O(1)Explanation:
O(1)
 
As constant extra space is used.
Time Complexity: O(n^2)Explanation:
O(N^2), where N is the size of the array.

As we are running two nested loops of size N.
Answered by CodingNinjas
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Round duration - 30 minutes
Round difficulty - Easy

This was a problem solving round and consisted of puzzles and mathematical problems.

Q1. Puzzle
A man fell in a 50m deep well. He climbs 4 meters up and slips 3 meters down in one day. How many days would it take for him to come out of the well?
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Q2. Puzzle
Suppose you take 5 mins to think for a coding task, another 10 mins to code where you write 100 lines of code. You take a break of 5 mins every 10 mins. How much lines of code will you have written a...read more
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Q3. Puzzle
There is a room with a door (closed) and three light bulbs. Outside the room, there are three switches, connected to the bulbs. You may manipulate the switches as you wish, but once you open the door...read more
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Q4. Puzzle
You are given Rs 100 every week. Every day you put Rs 5 in you piggy bank except on Sunday you put Rs 10. You take a bus to college, one side trip costs Rs 4, you do 2 trips a day. You have your lunc...read more
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It consists 2 coding questions and you have to answer in 40 mins

Q1. HR asked general questions about yourself
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Q2. Done discussion related to projects and experience
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It was good and nice to talk

Q1. Introduction about yourself
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Q2. Oops concept question
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Q1. About youself job profile
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Q2. Salary negotations
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