Hashedin vs Oracle Interview Questions
Hashedin lists 23 LeetCode interview questions while Oracle lists 314. They share 15 problems — 65% of Hashedin's bank and 5% of Oracle's. Focus on the overlap first, then drill into 8 Hashedin-only and 299 Oracle-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 15 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Hashedin and Oracle.
Step 2 — Company-specific depth: Add Hashedin-specific problems like Find Candidates for Data Scientist Position, Maximize Items, Maximum Points Inside the Square and Oracle-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Hashedin skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
15 Shared Questions
High-priority problems to practice for both Hashedin and Oracle.
| Problem | Difficulty |
|---|---|
| Minimize Length of Array Using Operations | Medium |
| Maximum Subarray | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Trapping Rain Water | Hard |
| Container With Most Water | Medium |
| Minimum Cost to Make Array Equal | Hard |
| Next Permutation | Medium |
| Jump Game II | Medium |
| Edit Distance | Medium |
| 3Sum | Medium |
| Group Anagrams | Medium |
| Isomorphic Strings | Easy |
| Number of Islands | Medium |
| Jump Game | Medium |
| Koko Eating Bananas | Medium |
Unique to Hashedin (8)
Problems in Hashedin's list that do not appear at Oracle.
| Problem | Difficulty |
|---|---|
| Find Candidates for Data Scientist Position | Easy |
| Maximize Items | Hard |
| Maximum Points Inside the Square | Medium |
| Count the Number of Powerful Integers | Hard |
| Chalkboard XOR Game | Hard |
| Maximum Product Subarray | Medium |
| Minimum Time to Repair Cars | Medium |
| Beautiful Arrangement | Medium |
Unique to Oracle (299)
Problems in Oracle's list that do not appear at Hashedin.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Two Sum | Easy |
| Top K Frequent Elements | Medium |
| Sliding Window Maximum | Hard |
| Valid Parentheses | Easy |
| Merge k Sorted Lists | Hard |
| Merge Intervals | Medium |
| Meeting Rooms II | Medium |
| Longest Palindromic Substring | Medium |
| Spiral Matrix | Medium |
| Minimum One Bit Operations to Make Integers Zero | Hard |
Frequently Asked Questions
How many LeetCode questions do Hashedin and Oracle share?
Hashedin and Oracle share 15 LeetCode interview questions. 8 problems appear only in Hashedin's list and 299 appear only in Oracle's list.
What topics overlap most between Hashedin and Oracle?
The most common shared topics between Hashedin and Oracle are Array (13 shared questions), Dynamic Programming (6 shared questions), Greedy (5 shared questions), Two Pointers (4 shared questions), Sorting (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Hashedin or Oracle?
Hashedin has 3 Easy, 15 Medium, and 5 Hard questions. Oracle has 61 Easy, 194 Medium, and 59 Hard questions. Hashedin has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Hashedin and Oracle?
Start with the 15 shared problems since they cover what both companies ask most often. Then add 8 Hashedin-specific and 20 Oracle-specific questions to round out your prep.