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Moolya Software Testing
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Given a string ‘abbaca’ as input, output print -‘ca’ duplicates adjacent remove
Sql- write a query to delete email from user table with id, name
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I was interviewed before Mar 2021.
Round duration - 30 minutes
Round difficulty - Medium
This was a MCQ round. 30 ques in 30 mins consisting of difficult quantitative aptitude questions were to be solved.
Round duration - 60 minutes
Round difficulty - Medium
In this test round, 2 coding questions were given. Either write the code or pseudo code
Given an integer N
, find all possible placements of N
queens on an N x N
chessboard such that no two queens threaten each other.
A queen can attack another queen if they ar...
The N Queens Problem involves finding all possible placements of N queens on an N x N chessboard without threatening each other.
Use backtracking algorithm to explore all possible configurations.
Keep track of rows, columns, and diagonals to ensure queens do not threaten each other.
Generate all valid configurations and print them out.
Given an integer array arr
of size 'N' containing only 0s, 1s, and 2s, write an algorithm to sort the array.
The first line contains an integer 'T' representing the n...
Sort an array of 0s, 1s, and 2s in linear time complexity.
Use three pointers to keep track of 0s, 1s, and 2s while traversing the array.
Swap elements based on the values encountered to sort the array in-place.
Time complexity should be O(N) and space complexity should be O(1).
Round duration - 60 minutes
Round difficulty - Easy
This was a technical round with questions on DSA.
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...
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
You are provided with the head of a linked list containing integers. Your task is to determine if the linked list is circular.
Detect if a given linked list is circular by checking if it forms a closed loop.
Traverse the linked list using two pointers, one moving at double the speed of the other.
If the two pointers meet at any point, the linked list is circular.
If the faster pointer reaches the end of the list (NULL), the linked list is not circular.
Round duration - 30 minutes
Round difficulty - Easy
HR round with typical behavioral problems.
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Prime number and reverse a string
posted on 14 Sep 2021
I was interviewed in Jan 2021.
Round duration - 30 minutes
Round difficulty - Medium
It was in the morning around 9:00Am-9:30AM. Platform used for this round was hacerrank. Questions were of moderate to difficult level.
You are given an array of integers ARR
and an integer X
. Your task is to determine the number of subarrays of ARR
whose bitwise XOR is equal to X
.
Count the number of subarrays in an array whose XOR is equal to a given value.
Iterate through the array and keep track of XOR values and their frequencies using a hashmap.
For each element in the array, calculate the XOR value with all previous elements and check if it equals the given XOR value.
Use the concept of XOR to efficiently solve the problem.
Handle edge cases like XOR value being 0 separately.
Time complexity ca...
Given a string STR
, return all possible non-empty subsequences with distinct characters. The order of the strings returned is not important.
STR = ...
Return all possible non-empty subsequences with distinct characters from a given string.
Iterate through all possible subsequences of the input string
Check for distinct characters in each subsequence
Return the distinct character subsequences as an array of strings
Round duration - 15 minutes
Round difficulty - Easy
It was in the night around 8:00PM-8:20PM. Interviewer was very calm in questioning. Platform used for this round was Skype and the questions focused more on personality rather than total.
Tip 1 : Practice aptitude questions a lot.
Tip 2 : Do some projects
Tip 3 : Research about company thoroughly
Tip 1 : It should be in proper format.
Tip 2 : Each skills should be mentioned properly.
posted on 16 Sep 2021
I was interviewed before Sep 2020.
Round duration - 50 minutes
Round difficulty - Medium
Round duration - 20 minutes
Round difficulty - Medium
You are given an integer array 'ARR' of size 'N' and an integer 'S'. Your task is to find and return a list of all pairs of elements where each sum of a pair equals 'S'.
Given an array and a target sum, find pairs of elements that add up to the target sum.
Iterate through the array and for each element, check if the complement (target sum - current element) exists in a hash set.
If the complement exists, add the pair to the result list. Otherwise, add the current element to the hash set.
Sort the pairs based on the first element and then the second element to meet the required output form
Round duration - 20 minutes
Round difficulty - Easy
Round duration - 40 minutes
Round difficulty - Hard
Pointers in C/C++ are variables that store memory addresses. They are used to manipulate memory directly and improve performance.
Pointers are declared using an asterisk (*) before the variable name.
Pointers can be used to dynamically allocate memory using functions like malloc() and free().
Pointers can be used to pass variables by reference to functions.
Tip 1 : Do atleast 1 project
Tip 2 : Practice Data structure programming questions
Tip 3 : Prepare concepts with examples (Coding/Numericals)
Tip 1 : Mention Projects
Tip 2 : Mention only those technologies which you are confident enough.
Tip 3 : Mention extra curricular activities if have.
posted on 27 Mar 2024
I applied via Company Website and was interviewed before Mar 2023. There were 3 interview rounds.
Normal aptitude questions
Python basic and some basic coding questions
Advance level coding question
posted on 22 Jan 2025
I applied via Campus Placement and was interviewed in Mar 2024. There were 2 interview rounds.
Aptitude and coding of 2 hours
I applied via Campus Placement and was interviewed in Apr 2023. There were 4 interview rounds.
It was an 1hr interview session
Count the occurrence of each element in an array of strings
Iterate through the array and use a hashmap to store the count of each element
If element already exists in the hashmap, increment its count by 1
Return the hashmap with element counts
I applied via Campus Placement and was interviewed in Nov 2024. There were 2 interview rounds.
Easy 1 hr test and can be completed easily
based on 1 interview
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