Bloomberg vs Cognizant Interview Questions
Bloomberg lists 1,200 LeetCode interview questions while Cognizant lists 29. They share 27 problems — 2% of Bloomberg's bank and 93% of Cognizant's. Focus on the overlap first, then drill into 1,173 Bloomberg-only and 2 Cognizant-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 27 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Bloomberg and Cognizant.
Step 2 — Company-specific depth: Add Bloomberg-specific problems like Merge Intervals, Insert Delete GetRandom O(1), Number of Islands and Cognizant-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Bloomberg skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
27 Shared Questions
High-priority problems to practice for both Bloomberg and Cognizant.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Add Two Numbers | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Valid Parentheses | Easy |
| Longest Palindromic Substring | Medium |
| 3Sum | Medium |
| Longest Common Prefix | Easy |
| Median of Two Sorted Arrays | Hard |
| Reverse Integer | Medium |
| Merge Sorted Array | Easy |
| Valid Anagram | Easy |
| Remove Duplicates from Sorted Array | Easy |
| Palindrome Number | Easy |
| Merge Two Sorted Lists | Easy |
| Maximum Subarray | Medium |
| Move Zeroes | Easy |
| Search Insert Position | Easy |
| Binary Search | Easy |
| Managers with at Least 5 Direct Reports | Medium |
| Fibonacci Number | Easy |
| Happy Number | Easy |
| Rising Temperature | Easy |
| Second Highest Salary | Medium |
| Students and Examinations | Easy |
| Count Primes | Medium |
| Fizz Buzz | Easy |
| Product Sales Analysis I | Easy |
Unique to Bloomberg (1,173)
Problems in Bloomberg's list that do not appear at Cognizant.
| Problem | Difficulty |
|---|---|
| Merge Intervals | Medium |
| Insert Delete GetRandom O(1) | Medium |
| Number of Islands | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Trapping Rain Water | Hard |
| Invalid Transactions | Medium |
| Flatten a Multilevel Doubly Linked List | Medium |
| Word Search | Medium |
| Majority Element | Easy |
| Container With Most Water | Medium |
| Decode String | Medium |
| LRU Cache | Medium |
Unique to Cognizant (2)
Problems in Cognizant's list that do not appear at Bloomberg.
| Problem | Difficulty |
|---|---|
| Count Subarrays of Length Three With a Condition | Easy |
| Smallest Value of the Rearranged Number | Medium |
Frequently Asked Questions
How many LeetCode questions do Bloomberg and Cognizant share?
Bloomberg and Cognizant share 27 LeetCode interview questions. 1173 problems appear only in Bloomberg's list and 2 appear only in Cognizant's list.
What topics overlap most between Bloomberg and Cognizant?
The most common shared topics between Bloomberg and Cognizant are Array (11 shared questions), Math (7 shared questions), String (6 shared questions), Two Pointers (6 shared questions), Database (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Bloomberg or Cognizant?
Bloomberg has 395 Easy, 645 Medium, and 160 Hard questions. Cognizant has 18 Easy, 10 Medium, and 1 Hard questions. Bloomberg has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Bloomberg and Cognizant?
Start with the 27 shared problems since they cover what both companies ask most often. Then add 20 Bloomberg-specific and 2 Cognizant-specific questions to round out your prep.