JUSPAY Software Developer Intern Interview Questions and Answers for Freshers

Q1. How set is implemented?
Ans. 
A set is implemented as a data structure that stores unique elements with no specific order.
• A set does not allow duplicate elements.

• Sets are commonly implemented using hash tables or binary search trees.

• Examples of set implementations include HashSet in Java and std::set in C++.
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Q2. How unordered set is implemented?
Ans. 
Unordered set is typically implemented using hash tables.
• Uses hash tables to store elements with unique keys

• Provides constant time complexity for insertion, deletion, and lookup operations

• Does not maintain any specific order of elements
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Round duration - 90 minutes
Round difficulty - Medium

Timing was late evening. Platform was good.

Q1. 
Largest Cycle in Maze Problem Statement
Given a maze represented by 'N' cells numbered from 0 to N-1, and an array arr of 'N' integers where arr[i] denotes the cell number that can be reached from the 'i'...read more
Ans. 
Identify the length of the largest cycle in a maze represented by cells and an array of integers.
• Iterate through each cell and find cycles using DFS or Floyd's Tortoise and Hare algorithm.

• Keep track of visited cells and cycle lengths to identify the largest cycle.

• If a cell has no exit (-1), mark it as visited to avoid infinite loops.
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Q2. 
Rat in a Maze Problem Statement
You need to determine all possible paths for a rat starting at position (0, 0) in a square maze to reach its destination at (N-1, N-1). The maze is represented as an N*N ma...read more
Ans. 
Find all possible paths for a rat in a maze from source to destination.
• Use backtracking to explore all possible paths in the maze.

• Keep track of visited cells to avoid revisiting them.

• Recursively try moving in all directions (up, down, left, right) until reaching the destination.

• Add the path to the result list when the destination is reached.

• Sort the result list in alphabetical order before returning.
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