Infosys
Global leader in next-generation digital services and consulting.
3 Rounds
~14 Days
Medium
The Interview Loop
Recruiter Screen (30 min)
Standard fit check, behavioral questions, and resume overview.
Technical Loop (3-4 Rounds)
Deep dive into domain knowledge, coding, and system design.
Interview Question Bank
Cloud Engineer
•
Coding
•
easy
Write a function to find the first non-repeating character in a string. Return its index. If it does not exist, return -1.
#Strings
#Hash Maps
Cloud Engineer
•
Coding
•
easy
Given an array of integers, write a function to move all zeros to the end of the array while maintaining the relative order of the non-zero elements. Do this in-place.
#Arrays
#Two Pointers
Data Engineer
•
Coding
•
medium
Given an array of strings, write a Python function to group anagrams together.
#Python
#Hash Maps
#Strings
#Sorting
Data Engineer
•
Coding
•
easy
Write a Python program to find the missing number in an array containing integers from 1 to N.
#Python
#Math
#Arrays
Data Engineer
•
Coding
•
medium
Write a Python function to flatten a deeply nested JSON object/dictionary into a single-level dictionary.
#Python
#Recursion
#Data Structures
#JSON
Data Engineer
•
Coding
•
medium
Write a Python script to read a large CSV file (10GB) that doesn't fit into memory, filter rows based on a condition, and write to a new file.
#Python
#Generators
#File I/O
#Memory Management
Machine Learning Engineer
•
Coding
•
medium
Find the length of the longest substring without repeating characters in a given string.
#Strings
#Sliding Window
Machine Learning Engineer
•
Coding
•
medium
Given a list of intervals representing client server downtimes, merge all overlapping intervals.
#Arrays
#Sorting
Machine Learning Engineer
•
Coding
•
easy
Given an array of integers and an integer target, return indices of the two numbers such that they add up to target. Can you do it in O(n) time?
#Arrays
#Hash Map
Software Engineer
•
Coding
•
medium
Find the length of the longest substring without repeating characters.
#Strings
#Sliding Window
#Hash Table
Software Engineer
•
Coding
•
easy
Given an array of integers and a target sum, return the indices of the two numbers that add up to the target.
#Arrays
#Hash Table
Software Engineer
•
Coding
•
easy
Write a program to reverse a string in-place without using any built-in library functions.
#Strings
#Two Pointers
Software Engineer
•
Coding
•
easy
Find the second largest element in an unsorted integer array in O(n) time complexity.
#Arrays
#Optimization
Software Engineer
•
Coding
•
easy
Write a function to check if a given string is a valid palindrome, ignoring non-alphanumeric characters and case.
#Strings
#Two Pointers
Software Engineer
•
Coding
•
easy
Given an array containing n distinct numbers taken from 0, 1, 2, ..., n, find the one that is missing from the array.
#Arrays
#Math
#Bit Manipulation
Software Engineer
•
Coding
•
medium
Write a program to detect if there is a cycle in a singly linked list.
#Linked Lists
#Two Pointers
Software Engineer
•
Coding
•
medium
Merge two sorted arrays into a single sorted array without using extra space.
#Arrays
#Sorting
Software Engineer
•
Coding
•
easy
Find the first non-repeating character in a string and return its index. If it doesn't exist, return -1.
#Strings
#Hash Table
Software Engineer
•
Coding
•
medium
Implement a Stack using two Queues.
#Stack
#Queue
#Data Structures
Difficulty Radar
Based on recent AI-sourced data.
Meet Your Interviewers
The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
SimulateUnwritten Rules
Think Out Loud
Always explain your thought process before writing code or drawing architecture.