Wissen Technology Intern Interview Questions and Answers for Freshers

Paper pen coding test

Q1. Easy-medium level sliding window problem
Ans. 
Find the maximum sum of a subarray of size k in an array of integers.
• Use a sliding window approach to keep track of the sum of the current subarray.

• Slide the window by adding the next element and subtracting the previous element.

• Keep track of the maximum sum encountered so far.

• Return the maximum sum found.
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Q2. Easy-medium level array problem
Ans. 
Find the longest common prefix among an array of strings.
• Iterate through the characters of the first string and compare with other strings.

• Stop when a character doesn't match or reach the end of any string.

• Return the prefix found so far.
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Q3. Gave me a condition and asked what data structure i would use. Problem was related to data retrieval so we would use hashmaps.
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Q4. They also asked sql queires and dbms related concepts (ACID, etc)
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