Raja Software Labs Software Developer Interview Questions, Process, and Tips

5 coding questions in the first round

Q1. About yourself , about your project explaination.
Ans. Explianation about your project they'll ask fine details also.
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Q2. Find prime numbers value.
Ans. 
A prime number is a number greater than 1 that is divisible only by 1 and itself.
• Start with a loop to iterate through numbers

• Check if each number is divisible by any number from 2 to its square root

• If not divisible, add it to the list of prime numbers
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5-6 questions were provided and a day was given.

Q1. DSA question related to array and string
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Q1. Find the minimum number of coins to make a given value. (Coin Change)
Ans. 
Find minimum number of coins to make a given value using dynamic programming.
• Use dynamic programming to find the minimum number of coins needed.

• Create a dp array to store the minimum number of coins for each value up to the given value.

• Iterate through each coin denomination and update the dp array accordingly.

• Return the value at the given value index in the dp array.
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Q1. First non repeating character in a string
Ans. 
Find the first non-repeating character in a string.
• Create a hash table to store character frequency

• Iterate through the string and update the hash table

• Iterate through the string again and return the first character with frequency 1
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Q2. Longest substring pallandrome in a string
Ans. 
Find the longest substring that is a palindrome in a given string.
• Use dynamic programming to solve the problem efficiently.

• Create a 2D boolean array to store the results of subproblems.

• Check for palindromes of length 1 and 2 separately.

• For substrings of length greater than 2, check if the first and last characters are the same and the substring between them is also a palindrome.

• Update the result if a longer palindrome
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Q1. MCQ test. 20 questions were asked and attempted in 30 minutes.
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1hr duration, test can be attempted in any language. I have attempted in python.