Algo8 AI Software Developer Interview Questions and Answers

Round duration - 120 minutes
Round difficulty - Easy

This was the first round and it consisted of MCQs and programming questions. This round was difficult.

Q1. 
Longest Palindromic Substring Problem Statement
You are provided with a string STR of length N. The task is to find the longest palindromic substring within STR. If there are several palindromic substring...read more
Ans. 
Given a string, find the longest palindromic substring within it, returning the one that starts with the smallest index if multiple substrings qualify.
• Iterate through the string and expand around each character to find palindromes

• Keep track of the longest palindrome found so far

• Return the longest palindromic substring that starts with the smallest index
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Q2. 
0-1 Knapsack Problem Statement
A thief plans to rob a store and can carry a maximum weight 'W' in his knapsack. There are 'N' items, with the i-th item weighing wi and having a value vi. Determine the max...read more
Ans. 
The 0-1 Knapsack Problem involves maximizing the value of items in a knapsack while respecting weight constraints.
• Iterate through all possible combinations of items to find the optimal solution.

• Use dynamic programming to store and reuse subproblem solutions.

• Consider the weight limit and value of each item to make the best choice.

• Example: For input [1, 2, 3], [10, 15, 40], and weight limit 6, the maximum value is 55.
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Q3. 
Reverse Linked List Problem Statement
Given a Singly Linked List of integers, your task is to reverse the Linked List by altering the links between the nodes.
Input:
The first line of input is an intege...read more
Ans. 
Reverse a singly linked list by altering the links between nodes.
• Iterate through the linked list and reverse the links between nodes

• Keep track of previous, current, and next nodes while reversing

• Update the head of the linked list to the last node after reversing
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Round duration - 90 minutes
Round difficulty - Hard

This round is last round in this round they give some coding questions as well as few questions they ask related to computer science main subjects. We have to correct all the questions in this round, to clear this round.

Q1. 
Maximum Value of Modulus Expression Problem
You are provided with two arrays ARR1 and ARR2 both having an equal length N. Your objective is to compute the maximum value of the expression:
|ARR1[ i ] - AR...read more
Ans. 
Compute the maximum value of a given expression involving two arrays.
• Iterate through all possible pairs of indices i and j to calculate the expression value

• Keep track of the maximum value found so far

• Use absolute function to handle negative values appropriately
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