Persistent Systems QA Engineer Interview Questions and Answers

Current Technologies

Duration 1 hr, Coding,GK and English

Q1. Xpath/ diffrence between "/" &"//" basic programs java
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Q1. Remove duplicates in string
Ans. 
Remove duplicates in a string array
• Iterate through the array and use a Set to store unique strings

• Convert the Set back to an array to get the final result
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Q2. Remove spaces in string
Ans. 
Remove spaces in a string
• Use string.replace() method with regex to replace spaces with empty string

• Alternatively, loop through each character in the string and build a new string without spaces

• Consider trimming the string first to remove leading and trailing spaces
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Q3. What is testing
Ans. 
Testing is the process of evaluating a system or application to identify defects or errors.
• Testing involves executing software to find bugs or issues.

• It ensures that the software meets the specified requirements.

• Types of testing include functional, performance, security, and regression testing.

• Examples of testing tools include Selenium, JUnit, and Postman.
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Q1. Strings remove duplicate and count
Ans. 
Remove duplicate strings in an array and count occurrences of each string.
• Iterate through the array and use a Set to remove duplicates.

• Use a HashMap to count occurrences of each string.

• Return the unique strings and their counts.
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Q1. Discussed about salary
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