Is coding round difficult?

The difficulty of the coding round in an IBM interview can range from moderate to challenging, depending on the role you are applying for and your level of preparation. Here's a breakdown of what makes the coding round difficult and how you can manage it:

1. Problem Complexity

• IBM coding rounds usually focus on data structures and algorithms, with problems that range from easy to hard. You may be given problems that require solutions in areas like:
  • Arrays and strings
  • Linked lists
  • Trees and graphs
  • Dynamic programming
  • Sorting and searching algorithms
• Some problems may seem simple but can require optimized solutions to meet time and space complexity requirements, making them more difficult.

2. Time Constraints

• The coding round typically lasts between 60 to 90 minutes, during which you must solve 2 to 3 problems. Managing your time effectively can be challenging, especially if you encounter a hard problem early on.

3. Edge Cases

• You’ll need to handle edge cases (like empty inputs, large data sets, or null values) in your solutions. If you miss an edge case, even if your main solution is correct, your code may fail some test cases.

4. Efficiency

• IBM expects you to not only solve the problem but also to write efficient code. Solutions with high time complexity may not pass all test cases, especially for large input sizes. It’s essential to be familiar with optimizing algorithms in terms of both time and space complexity.

5. Pressure to Perform

• Coding under time pressure can increase the difficulty of the round, especially if you feel stressed or nervous. Being able to stay calm, think clearly, and solve problems efficiently is key.

Conclusion:

Yes, the IBM coding round can be difficult due to the complexity of problems, time constraints, and the need to handle edge cases and optimization. However, with proper preparation and consistent practice on platforms like LeetCode, HackerRank, and Grokking the Coding Interview, you can manage the difficulty and improve your chances of success.

By focusing on solving medium-to-hard problems and understanding common problem-solving patterns, you can build the skills needed to excel in the coding round.