Persistent Systems Software Engineer Interview Questions, Process, and Tips

MCQ based on logical, quantitative, qualitative and english

Two easy questions based on string manipulation

Q1. Find count of each characters in string
Ans. 
The task is to count the occurrences of each character in a given string.
• Iterate through the string and use a hashmap to store the count of each character

• Convert the string to an array of characters for easier manipulation

• Handle edge cases like empty string or null input

• Consider using built-in functions like HashMap in Java or Counter in Python
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Q2. Find Freq of words in a sentence
Ans. 
Use a hashmap to store word frequencies in a sentence.
• Split the sentence into words using a space delimiter.

• Create a hashmap to store word frequencies.

• Iterate through the words and update the frequencies in the hashmap.

• Return the hashmap with word frequencies.
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Detailed coding process

Q1. What is array in. Python
Ans. 
An array in Python is a data structure that can hold multiple values of the same data type.
• Arrays in Python are created using square brackets []

• Elements in an array can be accessed using their index starting from 0

• Example: names = ['Alice', 'Bob', 'Charlie']
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Strong aptitude and verbal skill and 2 coding questions

Q1. What is default values of variables?
Ans. 
Default values of variables are the initial values assigned to variables if no value is explicitly provided.
• Default value for integer variables is 0

• Default value for floating point variables is 0.0

• Default value for boolean variables is false

• Default value for string variables is null

• Default value for arrays is null
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Q2. Question based on the program give by them like find errors or output of code
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Q3. Question based on data structures
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Q1. About your project
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Q2. They will give the problem we have write the code for that problem
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Q1. It is very easy round they will only ask about yourself, strength, weakness, ready to relocate etc
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It was an online aptitude test.

It was an online Coding test.

Q1. Basic concepts of DBMS & DSA.
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Q1. He told me to write the logic for pattern printing & some basic concepts of OOPS.
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Q1. All about myself & my hobbies & my reasons for choosing Persistent Systems.
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