Infosys Specialist Programmer Interview Questions, Process, and Tips

Simple Coding round. 3 questions. Managed to solve 2/3. Basic questions but strict timing constraints.

Q1. What are you expecting from the job?
Add your answer
Q2. Standard DSA questions. Binary Search, Merge Sort.
Add your answer

There were 3 coding questions and 3 hours time to solve them. They were of three levels easy, medium and hard. I solved two of them.

Q1. They asked three coding questions, and questions from OS, CN, DBMS, SQL and SE.
Add your answer
Q2. What is stack data structure?
Ans. 
Stack is a linear data structure that follows Last In First Out (LIFO) principle.
• Elements are added and removed from the top of the stack.

• Push operation adds an element to the top of the stack.

• Pop operation removes the top element from the stack.

• Peek operation returns the top element without removing it.

• Examples: function call stack, undo-redo operations in text editors.
Answered by AI
Add your answer
Q3. Write a program to print frequencies of elementsof an array.
Ans. 
Program to print frequencies of elements in an array.
• Create a dictionary to store the frequency of each element.

• Iterate through the array and update the frequency in the dictionary.

• Print the dictionary to display the frequency of each element.
Answered by AI
Add your answer
Q4. Swap two numbers without using third variable?
Ans. 
To swap two numbers without using third variable, use arithmetic operations.
• Add the two numbers and store the result in the first variable.

• Subtract the second variable from the sum and store the result in the second variable.

• Subtract the second variable from the original sum and store the result in the first variable.
Answered by AI
Add your answer
Q5. What is immutability in Python?
Ans. 
Immutability in Python refers to the property of objects that cannot be changed after creation.
• Immutable objects cannot be modified once created

• Immutable objects include numbers, strings, and tuples

• Immutable objects are useful for caching and as dictionary keys
Answered by AI
Add your answer

There were 2 easy - medium coding questions in only java/python with 20 mcq like 10 of java and 10 of dbms, u need to solved both

There were 3 hard coding questions one is from bit masking, 2nd one is from greedy and third one from dp+ binary search, i solved 2 only and got the opportunity for interview!

Q1. Interviewer was very friendly, he asked me two coding questions, 1. Longest consecutive subsequence and 2.check anagram. Then he asked be basic questions related to java oops cn. Advice : learn basic the...read more
Add your answer

Standard coding test consisting of 1 heard,1 medium and 1 easy leetcode style question.

Q1. Invert a binary tree?
Ans. 
Inverting a binary tree involves swapping the left and right children of each node recursively.
• Start at the root node and swap its left and right children

• Recursively invert the left and right subtrees

• Repeat the process for each node in the tree

• Example: Original tree - 1 Inverted tree - 1

• / \ / \

• 2 3 3...read more
Answered by AI
Add your answer
Q2. Array related question
Add your answer
Q3. Hashing related question
Add your answer

Q1. Projects you have worked on
Add your answer