Tech Mahindra 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. FindElement vs findElements
Ans. 
findElement is used to locate a single element on a web page, while findElements is used to locate multiple elements.
• findElement returns the first matching element on the page, while findElements returns a list of all matching elements.

• findElement throws NoSuchElementException if no element is found, while findElements returns an empty list.

• findElement is used when you expect only one element to be present, while findE...read more
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Q2. Largest number in array, Java program
Ans. 
Java program to find the largest number in an array of strings
• Convert each string element in the array to an integer using Integer.parseInt()

• Initialize a variable to store the largest number and compare each element to update it

• Return the largest number found in the array
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Q1. OOPS concepts, Testng
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Asked some questions on selenium, sql query and java programming

Q1. All about selenium and java
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Q2. JAVA oops concepts and selenium framework
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Q1. 1. Introduction including Education and Work Experience 2. SDLC and Models 3. Agile Ceremonies 4. Smoke, Sanity Testing 5. High Severity and High Priority with real project examples. 6. Difference between...read more
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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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