TCS Selenium Automation Tester Interview Questions and Answers

Q1. Given a set of strings, swap pair of character in each string. Eg “Selenium Automation Testing” should print as “eselinmu uaotamitno ettsnig”
Ans. 
Swap pair of characters in each string of an array of strings.
• Iterate through each string in the array

• For each string, swap pairs of characters by iterating through the string with a step of 2

• Return the modified array of strings
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Q2. Given a set of strings, find out the duplicate characters for the entire list of strings.
Ans. 
Find duplicate characters in a set of strings.
• Iterate through each string in the array.

• For each string, iterate through each character and store them in a hashmap with their frequency.

• Identify characters with frequency greater than 1 as duplicates.
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Q1. 5 error codes of sql
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Q2. 5 maven commands
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Q1. OOPS concepts, Testng
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Asked some questions on selenium, sql query and java programming

Q1. 1)Diff between continue and break ? 2)what is maven3)write code for extent report
Ans. 
1) continue - skips the current iteration and continues with the next iteration in a loop. break - exits the loop immediately. 2) Maven is a build automation tool used primarily for Java projects. 3) Extent Report is a reporting library for Selenium test automation.
• continue statement is used to skip the current iteration and continue with the next iteration in a loop

• break statement is used to exit the loop immediately

• M...read more
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Q1. 1. Find the second non repetitive character
Ans. 
The second non-repetitive character is to be found in a given array of strings.
• Iterate through each character in the strings and count their occurrences

• Identify the characters that occur only once

• Return the second non-repetitive character
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