Infosys vs Oracle Interview Questions
Infosys lists 105 LeetCode interview questions while Oracle lists 314. They share 64 problems — 61% of Infosys's bank and 20% of Oracle's. Focus on the overlap first, then drill into 41 Infosys-only and 250 Oracle-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 64 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Infosys and Oracle.
Step 2 — Company-specific depth: Add Infosys-specific problems like Maximum Good Subtree Score, Find Building Where Alice and Bob Can Meet, Minimum Reverse Operations and Oracle-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Oracle skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
64 Shared Questions
High-priority problems to practice for both Infosys and Oracle.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Valid Parentheses | Easy |
| Merge Sorted Array | Easy |
| Next Permutation | Medium |
| Palindrome Number | Easy |
| Remove Duplicates from Sorted Array | Easy |
| Maximum Subarray | Medium |
| Valid Anagram | Easy |
| Second Highest Salary | Medium |
| Rotate Image | Medium |
| Trapping Rain Water | Hard |
| Product of Array Except Self | Medium |
| Longest Common Prefix | Easy |
| Merge Intervals | Medium |
| Generate Parentheses | Medium |
| Spiral Matrix | Medium |
| Rotate Array | Medium |
| Coin Change | Medium |
| Reverse Integer | Medium |
| 3Sum | Medium |
| Group Anagrams | Medium |
| Set Matrix Zeroes | Medium |
| Linked List Cycle II | Medium |
| Move Zeroes | Easy |
| Reverse Words in a String | Medium |
| Two Sum II - Input Array Is Sorted | Medium |
| Add Two Numbers | Medium |
| Sort an Array | Medium |
Showing top 30 of 64 shared problems.
Unique to Infosys (41)
Problems in Infosys's list that do not appear at Oracle.
Unique to Oracle (250)
Problems in Oracle's list that do not appear at Infosys.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Top K Frequent Elements | Medium |
| Sliding Window Maximum | Hard |
| Merge k Sorted Lists | Hard |
| Meeting Rooms II | Medium |
| Minimum One Bit Operations to Make Integers Zero | Hard |
| LFU Cache | Hard |
| Asteroid Collision | Medium |
| Remove All Adjacent Duplicates in String II | Medium |
| Reverse Linked List | Easy |
| Min Stack | Medium |
| Minimum Absolute Difference | Easy |
Frequently Asked Questions
How many LeetCode questions do Infosys and Oracle share?
Infosys and Oracle share 64 LeetCode interview questions. 41 problems appear only in Infosys's list and 250 appear only in Oracle's list.
What topics overlap most between Infosys and Oracle?
The most common shared topics between Infosys and Oracle are Array (19 shared questions), Two Pointers (10 shared questions), String (7 shared questions), Hash Table (6 shared questions), Sorting (6 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Infosys or Oracle?
Infosys has 32 Easy, 57 Medium, and 16 Hard questions. Oracle has 61 Easy, 194 Medium, and 59 Hard questions. Oracle has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Infosys and Oracle?
Start with the 64 shared problems since they cover what both companies ask most often. Then add 20 Infosys-specific and 20 Oracle-specific questions to round out your prep.