Raja Software Labs Interview Questions, Process, and Tips

20 questions and 40 minutes time, questions were asked from computer science basics and aptitude

5 coding questions and 1 hr time. Questions were easy to medium level and mostly asked on topics like array, strings and basic data structures

Q1. Next 3 rounds were technical interviews. Coding questions were asked in all rounds and some hr questions in 3rd interview.
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20 basic coding and non coding mcq with 60 min time.

5 basic coding problems with 60 min time based on arrays string and numbers.

Q1. 1St Technical Interview 3 coding problems 1) leap Year 2)binary to decimal 3)prime number
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Q1. 2nd Technical Interview 1)input: "Raja Software Labs" output: "Raja%20Software%20Labs" 2) find contigious subarray with max sum
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Q1. 3rd Technical Interview did not qualify for this round
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Round duration - 90 minutes
Round difficulty - Medium

They share doc file link which consist of 5 programming questions

Q1. 
Reverse Words in a String: Problem Statement
You are given a string of length N. Your task is to reverse the string word by word. The input may contain multiple spaces between words and may have leading o...read more
Ans. 
Reverse words in a string while handling leading, trailing, and multiple spaces.
• Split the input string by spaces to get individual words

• Reverse the order of the words

• Join the reversed words with a single space in between
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Q2. 
Fibonacci Membership Check
Given an integer N, determine if it is a member of the Fibonacci series. Return true if the number is a member of the Fibonacci series, otherwise return false.
Fibonacci Series...read more
Ans. 
Check if a given integer is a member of the Fibonacci series.
• Calculate Fibonacci numbers iteratively until reaching or exceeding the given integer N.

• Check if the last calculated Fibonacci number is equal to N.

• Return true if N is a Fibonacci number, otherwise return false.
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Q3. 
Maximum Difference Problem Statement
Given an array ARR of N elements, your task is to find the maximum difference between any two elements in ARR.
If the maximum difference is even, print EVEN; if it is...read more
Ans. 
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.
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Q4. 
Remainder When Divided By 11 Problem Statement
Determine the remainder when a given number, 'N' in the form of a string, is divided by 11.
Input:
The first line contains an integer 'T' denoting the numb...read more
Ans. 
Find the remainder when a given number is divided by 11.
• Convert the given number 'N' from string to integer.

• Use the property that the remainder when a number is divided by 11 is the same as the remainder when the alternating sum of its digits is divided by 11.

• Iterate through the digits of 'N' and calculate the alternating sum.

• Finally, find the remainder of the alternating sum when divided by 11.

• Output the remainder as
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Round duration - 60 minutes
Round difficulty - Medium

In this round interviewer asked me to solve 3 programming questions.

Q1. 
Selection Sort Algorithm
Selection sort is a sorting technique that works by repeatedly finding the minimum element (considering ascending order) from the unsorted part and placing it at the beginning of ...read more
Ans. 
Implement Selection Sort algorithm to sort an array of non-negative integers in non-decreasing order.
• Iterate through the array and find the minimum element in the unsorted part.

• Swap the minimum element with the first element of the unsorted part.

• Repeat the process for the remaining unsorted part until the entire array is sorted.
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Q2. 
String Palindrome Verification
Given a string, your task is to determine if it is a palindrome considering only alphanumeric characters.
Input:
The input is a single string without any leading or trailing...read more
Ans. 
Check if a given string is a palindrome considering only alphanumeric characters.
• Remove non-alphanumeric characters from the input string.

• Convert the string to lowercase for case-insensitive comparison.

• Compare characters from start and end of the string to determine if it's a palindrome.
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Q3. 
Star Pattern Problem Statement
Display the star pattern for a given positive integer N.
Example:
Input:
N = 4
Output:
   *
  ***
 *****
*******
 
Explanation:
The dots in the image represent spaces. Al...read more
Ans. 
Display a pyramid star pattern for a given positive integer N with spaces in between.
• Start by printing spaces before the first star in each row, then print stars in increasing order

• Continue this pattern until the last row where all spaces are filled with stars

• Use a loop to iterate through each row and column to print the pattern

• Adjust the number of spaces and stars based on the row number and total number of rows
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Round duration - 60 minutes
Round difficulty - Easy

This was the HR round. They asked me simple HR questions and 1 coding question.

Q1. 
Character Counting Challenge
Create a program that counts and prints the total number of specific character types from user input. Specifically, you need to count lowercase English alphabets, numeric digi...read more
Ans. 
Create a program to count lowercase alphabets, digits, and white spaces until '$' is encountered in user input.
• Read characters from input stream until '$' is encountered

• Count lowercase alphabets, digits, and white spaces separately

• Print the counts of each character type as output
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