IBM Coding Assessment Questions and Solutions for Freshers 2025

IBM's hiring process is structured to assess technical proficiency, problem-solving capabilities, and adaptability, with the IBM Coding Assessment being a critical step. For freshers aspiring to work at IBM, acing this assessment requires a combination of technical knowledge and strategic preparation.

What is the IBM Coding Assessment?

The IBM Coding Assessment evaluates candidates on their ability to solve real-world problems using programming skills. It typically features:

• Coding Challenges: Focus on algorithms, data structures, and logical reasoning.
• Programming Languages: You can choose from popular options like Python, Java, and C++.

Exam Pattern and Key Topics

Exam Structure

Core Topics to Cover

1. Data Structures: Arrays, strings, stacks, and queues.
2. Algorithms: Sorting, searching, recursion, and dynamic programming.
3. Real-world scenarios: Data analysis, system design, and error handling.
4. Code Debugging: Identifying and fixing syntax and logic errors in the provided code.

Sample Question Types

Are you looking for IBM coding assessment questions? Click here to access coding practice sessions from moderate to challenging levels.

Top 5 Problem Statements for IBM Coding Assessment 

Problem Statement 1

John works in a coin factory where each coin has an ID. He has an array 'nums' of size N. In the factory, coins are assigned to boxes based on the sum of the digits of their IDs. For example, if the ID of a coin is 321, the sum of its digits is 6 (since 3 + 2 + 1 = 6), so the coin will be placed in box 6.

John has been given a task to work with coins that have IDs in the range from the smallest number in 'nums', called the low limit, to the largest number in 'nums', called the high limit. For each number in this range (from low-limit to high-limit, inclusive), John needs to calculate the sum of the digits and place the coin in the corresponding box.

Help John determine which box contains the most coins and output the number of coins in that box.

Note: The factory has coins with IDs ranging from 0 to infinity, but John only needs to work with coins whose IDs lie between the low limit and high limit (inclusive).

Input Format

The first line contains an integer N, representing the number of elements in nums.

The second line contains n space-separated integers representing the elements of the array nums.

Output Format

Print a single integer representing the maximum number of coins placed in any one box.

Constraints

1 <=N <=10^5

0 <= nums[i] <= 10^4

Solution C++

Solution Java

Solution Python

Problem Statement 2

You were learning the array data structure till your friend challenged you with a problem. Given an array of queries of positive integers between 1 and k, you have to process all queries[i]  according to the following rules:

In the beginning, you have the permutation P=[1,2,3,...,m].

For the current i, find the position of queries[i] in the permutation P (indexing from 0) and then move this at the beginning of the permutation P.

Notice that the position of queries[i] in the permutation P is the result for queries[i]. Print an array containing the result for the given queries.

Input Format

The first line contains m, the initial permutation P = [1,2,3,….,m]

The following line contains q, the number of queries

The following line contains q numbers denoting the ith query, starting from 0 to q-1.

Output Format

Print the result of all queries in a space-separated single-line fashion.

Constraints

1<=m<=5*10^4

1<=q<=m

1<=queries[i]<=m

Solution C++

Solution Java

Solution Python 

Problem Statement 3

Ram spots a line of N cars on the busy street, each with a unique feature. You're provided with an array called "features," where features[i] represent a distinctive feature of the ith car. Ram's quest is to discover the widest separation between two cars with different features. Can you help Ram with his quest?

Remember, this distance is determined by the absolute difference in their positions (abs(i - j)).

Input Format

The first line contains an integer N, the number of cars.

The second line contains N space-separated integers, where each integer denotes the feature of the i-th car.

Output Format

Print a single integer, which is the widest separation between any two cars that have different features.

Constraints

2 <= N <= 10^2

0 <= features[i] <= 10^3

Solution C++

Solution Java

Solution Python 

Problem Statement 4

Given a n * m matrix of ones and zeros, where 0 denotes water and 1 denotes island now you have to count the number of square sub-island. 

Input Format

First line contains n and m, where n is the number of rows and m is the column.

Second line contains the element of the arr matrix.

Output Format

Print the count of the number of square sub-island. 

Constraints

1 <= arr.length <= 300

1 <= arr[0].length <= 300

0 <= arr[i][j] <= 1

Solution C++

Solution Java

Solution Python 

Problem Statement 5

Aryan and Ankit play a game with N boxes. There are an even number of boxes arranged in a row, and each box has a positive integer number of stone balls, denoted by balls(i). The objective of the game is to end with the most balls. The total number of balls across all the boxes is odd, so there are no ties.

Rules:

Aryan and Ankit take turns picking all the balls from either the beginning or the end of the row of boxes. Aryan always plays first. Both players play optimally, meaning they make decisions to maximize their number of balls.

The game ends when there are no more boxes left. Assume Aryan and Ankit play optimally. Print Aryan if Aryan wins, and print Ankit if Ankit wins.

Input Format

The first line of input contains an integer N, representing the size of the array.

The second line of input contains N space-separated integers representing the number of balls in the boxes.

Output Format

Display "Aryan" if Aryan wins or Display"Ankit" if Ankit wins.

Constraints

1<=N<=10^2

Assuming Arr denotes the array and Arr(i) denotes array element at ith index of the array.

1<=Arr(i)<=10^4

Solution C++

Solution Java

Solution Python 

Preparation Tips for IBM Coding 

1. Practice Coding Daily: Search for available online platforms to practice IBM-style problems.
2. Master Time Management: Simulate test conditions to improve speed and accuracy.
3. Review Past Questions: Many coding patterns repeat, so reviewing previous IBM questions is invaluable.
4. Learn Debugging: Develop the ability to quickly identify and resolve issues in code.

Conclusion

The IBM Coding Assessment is your gateway to joining one of the most innovative tech companies. With structured preparation and regular practice, freshers can enhance their chances of success. Focus on understanding core concepts, practising coding daily, and learning from past papers to approach the test confidently.

Frequently Asked Questions (FAQs)

1. What programming languages are supported in IBM’s coding assessment?

Most common programming languages like Python, Java, and C++ are allowed.

2. What is the level of difficulty for IBM coding questions?

Questions range from beginner to intermediate levels, with occasional advanced challenges.

3. Can I revisit questions during the assessment?

The ability to navigate between questions depends on the test platform used.

4. What resources can help with preparation?

Search for available online platforms to practice coding prep resources, which are highly recommended.

5. Does IBM evaluate only coding skills?

Along with coding, IBM assesses problem-solving, logical reasoning, and adaptability.

Disclaimer: While we strive for accuracy, we do not guarantee its completeness or reliability. Readers are encouraged to verify all facts and statistics from the official company website or check independently before making decisions. 

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