Infosys vs Accenture: Interview Question Comparison

When preparing for technical interviews at large IT services firms, understanding the specific focus areas and difficulty distribution of each company's question bank can significantly streamline your study process. Both Infosys and Accenture assess core problem-solving skills, but their technical interviews exhibit distinct profiles in volume, difficulty, and topic emphasis. This comparison analyzes their question patterns to help you prioritize your preparation effectively.

Question Volume and Difficulty

The total number of cataloged questions is similar, but the distribution by difficulty level is markedly different.

Infosys presents a more balanced challenge with 158 questions distributed as Easy (42), Medium (82), and Hard (34). The significant portion of Medium and Hard questions (over 73% combined) indicates that Infosys interviews frequently test candidates on problems requiring multi-step logic, optimization, and a firm grasp of algorithmic patterns beyond the fundamentals.

Accenture, with 144 questions, has a notably different skew: Easy (65), Medium (68), and Hard (11). With nearly 92% of its questions categorized as Easy or Medium, Accenture's technical screen tends to emphasize foundational understanding, clean implementation, and problem-solving on common scenarios. The low number of Hard questions suggests that deeply complex algorithmic puzzles are less common in their standard process.

This distinction means your preparation intensity should vary. For Accenture, mastering fundamentals and common patterns is crucial. For Infosys, you must also practice optimizing solutions and tackling more intricate problems.

Topic Overlap

Both companies heavily test Array and String manipulation, as these are fundamental data structures for representing and processing data. Math problems also appear prominently for both, often involving number properties, basic arithmetic, or simple combinatorial logic.

The key divergence is in the third and fourth most frequent topics.

• Infosys lists Dynamic Programming (DP) as a top topic. This aligns with its higher difficulty profile, as DP problems are classic medium-to-hard challenges testing optimal substructure and state management.
• Accenture lists Hash Table as a top topic. This points to an emphasis on problems involving efficient lookups, frequency counting, and deduplication—common needs in business logic and data processing tasks.

This topic focus translates to different practice priorities. For Accenture, ensure you are proficient in using hash maps (or dictionaries) to solve problems in a single pass.

# Accenture-style example: Find the first non-repeating character
def first_uniq_char(s: str) -> int:
    freq = {}
    for ch in s:
        freq[ch] = freq.get(ch, 0) + 1
    for i, ch in enumerate(s):
        if freq[ch] == 1:
            return i
    return -1

For Infosys, you must build competency in breaking down problems into overlapping subproblems, a core DP skill.

# Infosys-style example: Classic DP - Climbing Stairs
def climbStairs(n: int) -> int:
    if n <= 2:
        return n
    dp = [0] * (n + 1)
    dp[1], dp[2] = 1, 2
    for i in range(3, n + 1):
        dp[i] = dp[i-1] + dp[i-2]
    return dp[n]

Which to Prepare for First

Prepare for Accenture first if you are early in your interview preparation journey. Its focus on Easy and Medium problems on foundational topics provides a solid platform to build core coding skills, especially with arrays, strings, and hash tables. Success here will boost your confidence.

Shift your focus to Infosys after you are comfortable with the fundamentals. The increased proportion of Medium and Hard problems, plus the explicit focus on Dynamic Programming, requires dedicated study of advanced patterns and optimization techniques. Preparing for Infosys will inherently cover the difficulty level needed for Accenture, but the reverse is not true.

Ultimately, use the company-specific question lists to tailor your final review. Practice Infosys questions to stress-test your algorithmic thinking, and practice Accenture questions to solidify clean, efficient implementations of common patterns.

For targeted practice, visit the Infosys question list at /company/infosys and the Accenture question list at /company/accenture.