How to Crack Zepto Coding Interviews in 2026

Zepto’s coding interviews are designed to assess strong problem-solving skills and the ability to write clean, efficient code under pressure. The process typically involves multiple rounds focusing on data structures, algorithms, and system design, with a clear emphasis on practical, scalable solutions. Success requires targeted preparation.

By the Numbers — Difficulty Breakdown and What It Means

An analysis of 28 Zepto coding questions reveals a distinct profile: a massive 82% (23 questions) are of Medium difficulty, with 14% (4 questions) Hard and only 4% (1 question) Easy. This distribution is critical. It signals that Zepto’s primary filter is your mastery of core algorithmic concepts applied to non-trivial problems. You won't be weeded out by simple syntax checks, but you must consistently solve problems that require combining multiple ideas, careful edge-case handling, and optimal time/space complexity. The Hard questions often appear in later rounds, testing depth of knowledge and resilience.

Top Topics to Focus On

Your study time must be prioritized. The top five topics, based on frequency, are:

1. Array: The foundation. Expect problems involving subarrays, rotations, and in-place manipulations.
2. Dynamic Programming (DP): A major focus. You must be comfortable with both 1D and 2D DP for problems related to optimization, counting, and string manipulation.
3. Sorting: Rarely just sort(). Think about using sorting as a pre-processing step to enable other algorithms like two-pointer or greedy approaches.
4. Depth-First Search (DFS): Essential for tree and graph traversal, pathfinding, and backtracking in problems like permutations or exploring grids.
5. Binary Search: Applied beyond sorted arrays. Master the template for searching in rotated arrays or for finding the optimal solution in an answer space (e.g., capacity planning).

Given DP's prominence, mastering a core pattern like the 0/1 Knapsack is non-negotiable. It forms the basis for many variations.

def knapsack(weights, values, capacity):
    n = len(weights)
    dp = [[0] * (capacity + 1) for _ in range(n + 1)]

    for i in range(1, n + 1):
        for w in range(1, capacity + 1):
            if weights[i-1] <= w:
                dp[i][w] = max(
                    values[i-1] + dp[i-1][w - weights[i-1]],
                    dp[i-1][w]
                )
            else:
                dp[i][w] = dp[i-1][w]
    return dp[n][capacity]

# Example
weights = [1, 3, 4, 5]
values = [1, 4, 5, 7]
capacity = 7
print(knapsack(weights, values, capacity))  # Output: 9

Preparation Strategy — A 4-6 Week Plan

Weeks 1-2: Foundation & Core Topics. Dedicate this phase to the top five topics. For each, solve 10-15 curated Medium problems. Understand the underlying pattern, then practice variations. For example, after learning DFS, solve problems on tree paths, island count, and permutation generation.

Weeks 3-4: Pattern Integration & Mock Interviews. Zepto's Medium problems often blend topics. Practice problems that combine, for instance, Sorting with Two-Pointers or Binary Search with Greedy. Begin timed practice sessions. Do at least 2-3 full mock interviews per week, simulating the actual pressure.

Weeks 5-6: Gaps, Hard Problems, and Polish. Systematically review your weak areas. Attempt the 1-2 Hard problems from each core topic. Focus on communicating your thought process clearly—practice explaining your approach before coding, discussing trade-offs, and walking through a test case.

Key Tips

1. Optimize from the Start. For Medium problems, a brute-force solution is rarely sufficient. When explaining your approach, immediately discuss the optimal time and space complexity target (e.g., O(n log n) and O(1)) and work towards it.
2. Clarify Constraints and Edge Cases. Before coding, always ask about input size, value ranges, and data characteristics. Verbally listing edge cases (empty input, single element, large values) demonstrates thoroughness.
3. Write Production-Ready Code. Use meaningful variable names, add brief comments for complex logic, and structure your code with clear helper functions if needed. Write clean code you'd be willing to ship.
4. Test with Your Own Cases. After coding, don't wait for the interviewer. Run through a small standard case, a edge case, and a larger case verbally to validate your logic.

Consistent, topic-focused practice is the key to handling Zepto's Medium-heavy question bank.

Browse all Zepto questions on CodeJeet