Engati Interview Questions, Process, and Tips

Q1. Largest element in an array without using any stl functions
Ans. 
Find the largest element in an array without using any STL functions.
• Iterate through the array and compare each element with the current largest element.

• Update the largest element if a larger element is found.

• Return the largest element at the end.
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Q2. Basic puzzle problem
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Q3. Implementing queue from2 stacks
Ans. 
Implement a queue using two stacks
• Use two stacks - one for enqueue operation and one for dequeue operation

• When dequeue is called, check if the second stack is empty. If it is, pop all elements from the first stack and push them onto the second stack

• Time complexity for enqueue operation is O(1) and for dequeue operation is O(n)
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Q1. Managerial and basic hr questions like introduce yourself
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First round was an online test comprising of four different sections. Those were OOPs , Java, Data Interpretation, and Aptitude section. Each section had 12 questions which has to be solved in 11 minutes.

Q1. Second round was technical round and it was Face to Face round. They asked me questions based on OOP, OS, and on my projects.
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It has both coding and aptitude of 25 questions each

Q1. Find second smallest element in the array
Ans. 
The second smallest element in an array is found by sorting the array and selecting the element at index 1.
• Sort the array in ascending order

• Access the element at index 1 to get the second smallest element
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Q2. Mover zeros to the lend of the array without changing the order
Ans. 
Move zeros to the end of the array without changing the order.
• Iterate through the array and count the number of zeros

• Create a new array with all the non-zero elements

• Append the counted number of zeros at the end of the new array
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1 hour, 43 MCQ type questions

Q1. Reverse a string
Ans. 
Reverse a given string
• Use a loop to iterate through the characters of the string and build a new string in reverse order

• Alternatively, you can use built-in functions like reverse() or StringBuilder in some programming languages

• Make sure to handle edge cases like empty string or null input
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Q2. 3 ants on a triangle puzzle
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Program = Binary Search Treee

Logical question to think of different aspects of possibilities

Simple coding round. Have to complete the working code in a stipulated time.

Q1. Java basics questions. Theory and practical.
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Q2. Basic coding on data structures
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