DTDC Express Senior Sdet Test Engineer Interview Questions and Answers

Q1. DSA, collection, Java questions, sorting and searching
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Q1. Code to reverse words in string
Ans. 
Code to reverse words in string
• Split the string into an array of words

• Reverse the array of words

• Join the reversed array back into a string
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Data Structure, Array, Hashmap

Q1. The qes related to Selenium, TestNG annotations, Array(find common elements)
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Q2. In Array find the common elements
Ans. 
Find common elements in an array of strings.
• Iterate through the array and compare each element with the rest of the elements.

• Use a nested loop to compare each element with all other elements.

• If an element is found to be common, add it to a separate array or list.

• Return the array or list of common elements.
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Q3. TestNG Annotations
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Q1. Pre screening of 30 mins . Basic about java, automation , testing concepts.
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Q1. DS Algo round , coding question and framework part
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Q1. DS Algo round (advance as compared to round 2 ) , Automation and CI/CD part was asked.Java concept will be asked in all the rounds.
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Q1. Hiring manager round . Technical question as well coding question was there.
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Round duration - 60 Minutes
Round difficulty - Medium

It was technical discussion plus coding round

Q1. 
Count Ways To Reach The N-th Stair Problem Statement
You are given a number of stairs, N. Starting at the 0th stair, you need to reach the Nth stair. Each time you can either climb one step or two steps. ...read more
Ans. 
It should be resolved using recursion and DP.
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Q2. 
Clone a Linked List with Random Pointers
You are provided with a linked list where each node has two pointers. The first pointer directs to the next node, and the second one, known as the 'random' pointer...read more
Ans. 
Each node's next pointer points to next. But previous pointer points to a random node.
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2-3 questions were asked on ds and algo.

Q1. Asked to code in react or angular.
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Q1. Asked to code in react or angular.
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Q1. It was taken by some director out of india. Faced lot of communication issues. He asked to write code. Some design questions and diff in angular and reactjs.
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Mixtures and Segregation, Distance based questions

Freedom is a myth was the given topic

Q1. We were asked questions based on our resume alone
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