Wunderman Thompson Commerce Interview Questions, Process, and Tips

Round duration - 50 Minutes
Round difficulty - Medium

there were two coding question in first round.

Q1. 
Doctor Ninja's House Problem Statement
In a network of 'N' cities with 'M' paths connecting them, Doctor Ninja aims to purchase a house in a city 'X' such that it is possible to reach every other city fro...read more
Ans. 
The task is to find a city 'X' from which all other cities can be reached in a given graph.
• Find the mother vertices in the graph.

• If there are multiple mother vertices, return the minimum value.

• If there are no mother vertices, return -1.
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Round duration - 30 Minutes
Round difficulty - Medium

1 coding question of scrambled string.

Q1. 
Scramble String Problem Statement
You are given an integer 'N' and two strings S and R, each having the size N. Determine if you can scramble string S to obtain string R using specified operations.
Your ...read more
Ans. 
The question asks to determine if string 'R' can be obtained by scrambling string 'S' using certain operations.
• The length of both strings 'S' and 'R' should be the same.

• The operations can be applied recursively on the substrings of 'S'.

• If the length of 'S' is 1, the scrambling process stops.

• The strings only contain lowercase letters.
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Round duration - 30 Minutes
Round difficulty - Easy

oops and some sql queries

Round duration - 20 Minutes
Round difficulty - Easy

HR round

Round duration - 60 minutes
Round difficulty - Easy

Technical Interview round with questions around Java.

Q1. What is the difference between @RestController and @Controller in Spring?
Ans. 
The main difference is that @RestController is a specialized version of @Controller that is used for RESTful web services.
• RestController is used for creating RESTful web services, while Controller is used for handling web requests in a traditional MVC application

• RestController eliminates the need for annotating each method with @ResponseBody as it is done automatically

• RestController returns data directly in the respons...read more
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Q2. 
Swap Two Numbers Without Using a Third Variable
Your task is to swap two given numbers without utilizing an additional variable and print the swapped values.
Input:
The first line contains an integer 't...read more
Ans. 
Swapping two numbers without using a third variable in Java.
• Use bitwise XOR operation to swap the numbers without using a third variable.

• a = a XOR b; b = a XOR b; a = a XOR b; will swap the values of a and b.

• Ensure to handle edge cases like when a and b are the same number.
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Q3. What is the Singleton Design Pattern?
Ans. 
Singleton Design Pattern ensures a class has only one instance and provides a global point of access to it.
• Ensures a class has only one instance by providing a global access point to it.

• Uses a private constructor to restrict instantiation of the class from other classes.

• Provides a static method to access the single instance of the class.

• Commonly used in scenarios where only one instance of a class is needed, such as da
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Round duration - 30 minutes
Round difficulty - Easy

HR round with typical behavioral problems.