TCS vs Expedia: Interview Question Comparison

When preparing for technical interviews, understanding company-specific patterns is crucial for efficient study. TCS (Tata Consultancy Services) and Expedia represent two distinct ends of the spectrum in terms of question volume and focus, despite sharing some common technical topics. TCS, as a large global IT services company, has a broad and voluminous question bank, while Expedia, a major online travel company, has a more curated and moderately difficult set. This comparison breaks down the key differences to help you strategize your preparation.

Question Volume and Difficulty

The most striking difference is the sheer number of documented questions. TCS's repository of 217 questions dwarfs Expedia's 54 questions. This volume suggests TCS's interviews may pull from a wider pool of problems or that their process has been documented more extensively over time.

The difficulty distribution also varies:

• TCS: Easy: 94 (43%), Medium: 103 (47%), Hard: 20 (9%)
• Expedia: Easy: 13 (24%), Medium: 35 (65%), Hard: 6 (11%)

TCS has a significant portion of Easy questions, indicating a strong focus on foundational problem-solving. Expedia's question set is heavily skewed towards Medium difficulty, suggesting they prioritize problems that require a solid grasp of algorithms and clean implementation under typical interview constraints.

Topic Overlap

Both companies emphasize core data structures. Array, String, and Hash Table problems form the backbone of interviews at both TCS and Expedia. Mastering these is non-negotiable.

The key differentiator lies in the next most frequent topics:

• TCS heavily features Two Pointers. This pattern is essential for solving a wide range of array and string problems efficiently, from checking for palindromes to finding pairs with a target sum.

# Two Pointers: Pair with Target Sum
def two_sum(nums, target):
    left, right = 0, len(nums) - 1
    while left < right:
        current_sum = nums[left] + nums[right]
        if current_sum == target:
            return [left, right]
        elif current_sum < target:
            left += 1
        else:
            right -= 1
    return []

• Expedia prominently lists Greedy algorithms. This indicates a focus on problems involving optimal local choices, such as activity selection, task scheduling, or coin change (for the minimum number of coins).

# Greedy: Minimum Coins (for canonical coin systems)
def min_coins(coins, amount):
    coins.sort(reverse=True)
    count = 0
    for coin in coins:
        if amount >= coin:
            count += amount // coin
            amount %= coin
    return count if amount == 0 else -1

Which to Prepare for First

Your preparation priority should be dictated by your interview timeline and the role's focus.

Prepare for TCS first if: You are early in your interview preparation cycle or targeting roles that test broad fundamentals. The large volume of questions, with a high percentage of Easy and Medium problems, makes TCS an excellent benchmark for solidifying core concepts in Arrays, Strings, Hash Tables, and Two Pointers. Solving a representative sample from their list will build strong general problem-solving muscles.

Prepare for Expedia first if: You have a solid foundation and are specifically targeting product-based companies or roles requiring optimized solutions. The concentration on Medium-difficulty questions and Greedy algorithms points to a focus on applying optimal algorithms to practical problems. Master the core topics (Array, String, Hash Table) and then drill deeply into Greedy patterns and common Medium-level problems on platforms like LeetCode.

A strategic approach is to build your foundation with TCS's broader set and then sharpen your skills with Expedia's more focused, medium-difficulty problems. This ensures you are well-rounded and can handle the specific algorithmic emphasis of each company.

For detailed question lists and patterns, visit the company pages: TCS Interview Questions and Expedia Interview Questions.