Nuclei Java Developer Interview Questions, Process, and Tips

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Q1. Based on cn and dsa
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Q2. Based on the os
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Round duration - 45 minutes
Round difficulty - Medium

Timing was 12 PM. Interviewer was nice.

Q1. Reverse the String
You are given a string 'STR'. The string contains [a-z] [A-Z] [0-9] [special characters]. You have to find the reverse of the string.
For example:
 If the given string is: STR...read more
Ans. Optimal Solution
• Traverse the string and swap the first character with the last character, the second character with the second last character and so on.
• Basically, you need to swap the i-th character with the (N-i-1)-th character where N is the length of the string and 0-based indexing is considered.
Space Complexity: O(1)Explanation:
O(1).
 
In the worst case, only constant extra space is required.
Time Complexity: O(...read more
Answered by CodingNinjas
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Q2. Move Zeros To Left
You are given an array 'ARR' of integers. Your task is to modify the array so that all the array elements having zero values get pushed to the left and all the array elements hav...read more
Ans. Solution Using Extra space
The idea is to use an extra vector to store all the non-zero elements while maintaining their relative order. So we will first add all the non-zero elements to a vector and then iterate that vector backwards and start updating the array values from end. In the end we will set all the array values whose values were not updated to 0. 
Steps:
1. Let storeNonZero be the vector that stores non-zero...read more
Answered by CodingNinjas
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Q3. SQL Question
Write SQL query to find second highest salary from a table.
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Q4. Aptitude Question
Given a Circle and Six Straight Lines. What is the maximum number of pieces that one can cut the circle using these six straight lines?
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