Zidio Development Software Trainee Intern Interview Questions and Answers

It includes multiple-choice questions for the field you are applying to.

Some basic data structure and algorithm questions; you can choose your preferred language to code.

Q1. What type of company do you prefer to work for?
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Q2. What is JIT in Java?
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Q1. What is time complexity, and how can it be reduced?
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Q2. What are the advantages and disadvantages of different search methods?
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Aptitude questions with some basic coding questions

They have given 3 coding questions and some pseudo codings

Q1. Tell about your self
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Q2. Some coding questions
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Basic aptitude questions were asked of easy level.

Q1. Dbms , oops , C++ , sql , aws , powerpoint
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Q1. Peak element in array
Ans. 
A peak element in an array is an element that is greater than or equal to its neighbors.
• Iterate through the array and check if the current element is greater than its neighbors.

• If the element at index i is greater than or equal to elements at indices i-1 and i+1, it is a peak element.

• Example: ['1', '3', '2', '4', '1'] has peak elements at index 1 and 3.
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Q2. 2 dimentional array rotate 90 degree
Ans. 
Rotate a 2D array by 90 degrees clockwise
• Transpose the array

• Reverse each row of the transposed array
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Pollitices current generation

Aptitude questions were easy and basics

Q1. They asked about projects, SQL basics, oops concepts and about java concepts
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Q2. It was an easy and average interview
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Aptitude test was quite easy; it had normal intelligence questions as well as some math

The coding test consisted of 2 medium HackerRank questions in any language

Q1. I had a face-to-face virtual interview. The interview round went for 45 minutes. They asked all sort of questions, from JAVA to SQL to basic Python. Also, DSA questions were asked.
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Q2. Difference between Truncate, Delete and Drop
Ans. 
Truncate removes all rows from a table, Delete removes specific rows, and Drop deletes the entire table structure.
• Truncate is a DDL command that removes all rows from a table but keeps the table structure intact.

• Delete is a DML command that removes specific rows based on a condition.

• Drop is a DDL command that deletes the entire table structure along with all its data.

• Truncate is faster than Delete as it does not log in...read more
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Q3. Difference between Sets, Lists, Tuples
Ans. 
Sets, Lists, and Tuples are all data structures in Python with different characteristics and use cases.
• Sets are unordered collections of unique elements. Example: {1, 2, 3}

• Lists are ordered collections of elements that can be modified. Example: [1, 2, 3]

• Tuples are ordered collections of elements that cannot be modified. Example: (1, 2, 3)
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Q1. Round 4 was another face-to-face interview with a senior.
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Q1. Modify the triger
Ans. 
Modify the trigger in the software system.
• Identify the current trigger functionality and the desired modification.

• Update the trigger logic or conditions as needed.

• Test the modified trigger to ensure it functions correctly.
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Q1. Find the second most occurrence if string in JavaScript
Ans. 
Find the second most occurrence of a string in an array of strings in JavaScript.
• Create a map to store the count of each string in the array

• Sort the map by values in descending order to find the most occurrence

• Return the key of the second element in the sorted map
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