Where can I find company-wise LeetCode questions for Oracle?

LeetMap Pro provides a complete, verified list of 314 company-wise Oracle coding interview questions filtered by 30-day, 3-month, and 6-month recency windows, 100% free with no paywall or subscription.

How does LeetMap track Oracle interview problem recency?

LeetMap weights problem occurrences across 30-day, 3-month, and 6-month recency windows to ensure candidates focus on problems actively being asked in the current hiring cycle.

What difficulty distribution should I expect in Oracle coding rounds?

For Oracle, Medium difficulty problems represent the largest share (193 problems), followed by Easy (61) and Hard (60). Mastering foundational patterns like Trees, Graphs, and Dynamic Programming is essential.

OracleLeetCode Questions

Verified

314 questions·61 Easy·193 Medium·60 Hard

Company-wise coding interview questions asked by Oracle, ranked by real frequency across 30-day, 3-month, and 6-month recency windows.

SQL (3)

⌘K

#146LRU Cache

Medium·Freq 100%·Acc 47.6%

#3Longest Substring Without Repeating Characters

Medium·Freq 88%·Acc 39.4%

#200Number of Islands

Medium·Freq 88%·Acc 64.7%

#1Two Sum

Easy·Freq 88%·Acc 57.8%

#49Group Anagrams

Medium·Freq 82%·Acc 72.9%

#347Top K Frequent Elements

Medium·Freq 76%·Acc 66.8%

#23Merge k Sorted Lists

Hard·Freq 75%·Acc 60.0%

#239Sliding Window Maximum

Hard·Freq 75%·Acc 49.0%

#20Valid Parentheses

Easy·Freq 75%·Acc 44.5%

#56Merge Intervals

Medium·Freq 75%·Acc 52.3%

#54Spiral Matrix

Medium·Freq 75%·Acc 57.2%

#253Meeting Rooms II

Medium·Freq 75%·Acc 52.7%

#33Search in Rotated Sorted Array

Medium·Freq 68%·Acc 45.2%

#460LFU Cache

Hard·Freq 66%·Acc 49.7%

#5Longest Palindromic Substring

Medium·Freq 64%·Acc 38.2%

#206Reverse Linked List

Easy·Freq 64%·Acc 80.8%

#1209Remove All Adjacent Duplicates in String II

Medium·Freq 64%·Acc 61.6%

#11Container With Most Water

Medium·Freq 63%·Acc 60.4%

#53Maximum Subarray

Medium·Freq 63%·Acc 53.5%

#155Min Stack

Medium·Freq 63%·Acc 58.4%

#735Asteroid Collision

Medium·Freq 63%·Acc 48.4%

#1200Minimum Absolute Difference

Easy·Freq 63%·Acc 75.2%

#153Sum

Medium·Freq 63%·Acc 39.4%

#42Trapping Rain Water

Hard·Freq 63%·Acc 67.7%

#3438Find Valid Pair of Adjacent Digits in String

Easy·Freq 63%·Acc 61.1%

#13Roman to Integer

Easy·Freq 63%·Acc 66.8%

#22Generate Parentheses

Medium·Freq 63%·Acc 78.9%

#128Longest Consecutive Sequence

Medium·Freq 63%·Acc 47.2%

#199Binary Tree Right Side View

Medium·Freq 63%·Acc 70.7%

#242Valid Anagram

Easy·Freq 63%·Acc 68.3%

#394Decode String

Medium·Freq 63%·Acc 62.9%

#1797Design Authentication Manager

Medium·Freq 63%·Acc 58.7%

#875Koko Eating Bananas

Medium·Freq 63%·Acc 50.2%

#121Best Time to Buy and Sell Stock

Easy·Freq 63%·Acc 57.0%

#2506Count Pairs Of Similar Strings

Easy·Freq 63%·Acc 73.8%

#2836Maximize Value of Function in a Ball Passing Game

Hard·Freq 63%·Acc 31.5%

#994Rotting Oranges

Medium·Freq 63%·Acc 59.0%

#236Lowest Common Ancestor of a Binary Tree

Medium·Freq 63%·Acc 69.7%

#2466Count Ways To Build Good Strings

Medium·Freq 63%·Acc 58.9%

#2580Count Ways to Group Overlapping Ranges

Medium·Freq 63%·Acc 39.3%

#2549Count Distinct Numbers on Board

Easy·Freq 63%·Acc 61.8%

#3012Minimize Length of Array Using Operations

Medium·Freq 63%·Acc 36.1%

#3015Count the Number of Houses at a Certain Distance I

Medium·Freq 63%·Acc 58.1%

#3017Count the Number of Houses at a Certain Distance II

Hard·Freq 63%·Acc 23.8%

#2192All Ancestors of a Node in a Directed Acyclic Graph

Medium·Freq 63%·Acc 62.3%

#1380Lucky Numbers in a Matrix

Easy·Freq 63%·Acc 80.1%

#1410HTML Entity Parser

Medium·Freq 63%·Acc 50.1%

#1611Minimum One Bit Operations to Make Integers Zero

Hard·Freq 63%·Acc 78.3%

#295Find Median from Data Stream

Hard·Freq 58%·Acc 54.7%

#75Sort Colors

Medium·Freq 56%·Acc 70.0%

#207Course Schedule

Medium·Freq 56%·Acc 51.8%

#1353Maximum Number of Events That Can Be Attended

Medium·Freq 56%·Acc 39.0%

#3799Word Squares II

Medium·Freq 56%·Acc 55.2%

#4Median of Two Sorted Arrays

Hard·Freq 53%·Acc 47.0%

#14Longest Common Prefix

Easy·Freq 53%·Acc 47.9%

#41First Missing Positive

Hard·Freq 53%·Acc 43.2%

#93Restore IP Addresses

Medium·Freq 53%·Acc 56.4%

#169Majority Element

Easy·Freq 53%·Acc 66.4%

#322Coin Change

Medium·Freq 53%·Acc 48.7%

#450Delete Node in a BST

Medium·Freq 53%·Acc 55.0%

#525Contiguous Array

Medium·Freq 53%·Acc 51.7%

#981Time Based Key-Value Store

Medium·Freq 53%·Acc 50.0%

#71Simplify Path

Medium·Freq 53%·Acc 50.9%

#6Zigzag Conversion

Medium·Freq 51%·Acc 54.5%

#76Minimum Window Substring

Hard·Freq 51%·Acc 47.9%

#103Binary Tree Zigzag Level Order Traversal

Medium·Freq 51%·Acc 64.1%

#215Kth Largest Element in an Array

Medium·Freq 51%·Acc 69.1%

#230Kth Smallest Element in a BST

Medium·Freq 51%·Acc 77.0%

#238Product of Array Except Self

Medium·Freq 51%·Acc 69.1%

#359Logger Rate Limiter

Easy·Freq 51%·Acc 76.9%

#102Binary Tree Level Order Traversal

Medium·Freq 51%·Acc 73.0%

#543Diameter of Binary Tree

Easy·Freq 51%·Acc 65.8%

#621Task Scheduler

Medium·Freq 51%·Acc 63.4%

#697Degree of an Array

Easy·Freq 51%·Acc 58.5%

#987Vertical Order Traversal of a Binary Tree

Hard·Freq 51%·Acc 54.2%

#208Implement Trie (Prefix Tree)

Medium·Freq 51%·Acc 69.7%

#127Word Ladder

Hard·Freq 51%·Acc 46.0%

#2954Count the Number of Infection Sequences

Hard·Freq 51%·Acc 38.0%

#17Letter Combinations of a Phone Number

Medium·Freq 50%·Acc 66.4%

#34Find First and Last Position of Element in Sorted Array

Medium·Freq 50%·Acc 49.3%

#134Gas Station

Medium·Freq 50%·Acc 48.3%

#138Copy List with Random Pointer

Medium·Freq 50%·Acc 63.3%

#210Course Schedule II

Medium·Freq 50%·Acc 55.9%

#221Maximal Square

Medium·Freq 50%·Acc 50.6%

#283Move Zeroes

Easy·Freq 50%·Acc 64.1%

#345Reverse Vowels of a String

Easy·Freq 50%·Acc 61.7%

#443String Compression

Medium·Freq 50%·Acc 60.3%

#588Design In-Memory File System

Hard·Freq 50%·Acc 48.3%

#2291Maximum Profit From Trading Stocks

Medium·Freq 50%·Acc 48.3%

#125Valid Palindrome

Easy·Freq 50%·Acc 53.7%

#647Palindromic Substrings

Medium·Freq 50%·Acc 73.0%

#51N-Queens

Hard·Freq 50%·Acc 76.0%

#1669Merge In Between Linked Lists

Medium·Freq 50%·Acc 83.1%

#755Pour Water

Medium·Freq 50%·Acc 49.1%

#498Diagonal Traverse

Medium·Freq 50%·Acc 67.3%

#845Longest Mountain in Array

Medium·Freq 50%·Acc 42.3%

#98Validate Binary Search Tree

Medium·Freq 50%·Acc 36.0%

#124Binary Tree Maximum Path Sum

Hard·Freq 50%·Acc 42.5%

#140Word Break II

Hard·Freq 50%·Acc 55.8%

#240Search a 2D Matrix II

Medium·Freq 50%·Acc 57.6%

#74Search a 2D Matrix

Medium·Freq 50%·Acc 54.3%

#380Insert Delete GetRandom O(1)

Medium·Freq 50%·Acc 55.4%

#1268Search Suggestions System

Medium·Freq 50%·Acc 65.2%

#300Longest Increasing Subsequence

Medium·Freq 50%·Acc 59.7%

#96Unique Binary Search Trees

Medium·Freq 50%·Acc 63.9%

#2Add Two Numbers

Medium·Freq 44%·Acc 48.8%

#12Integer to Roman

Medium·Freq 44%·Acc 71.2%

#55Jump Game

Medium·Freq 44%·Acc 41.2%

#61Rotate List

Medium·Freq 44%·Acc 42.9%

#179Largest Number

Medium·Freq 44%·Acc 43.3%

#9Palindrome Number

Easy·Freq 44%·Acc 60.7%

#252Meeting Rooms

Easy·Freq 44%·Acc 59.5%

#540Single Element in a Sorted Array

Medium·Freq 44%·Acc 59.3%

#560Subarray Sum Equals K

Medium·Freq 44%·Acc 47.7%

#767Reorganize String

Medium·Freq 44%·Acc 57.3%

#706Design HashMap

Easy·Freq 44%·Acc 66.7%

#1235Maximum Profit in Job Scheduling

Hard·Freq 44%·Acc 54.8%

#1823Find the Winner of the Circular Game

Medium·Freq 44%·Acc 82.3%

#2062Count Vowel Substrings of a String

Easy·Freq 44%·Acc 73.3%

#31Next Permutation

Medium·Freq 44%·Acc 45.6%

#1944Number of Visible People in a Queue

Hard·Freq 44%·Acc 73.3%

#176Second Highest SalarySQL

Medium·Freq 44%·Acc 47.5%

#829Consecutive Numbers Sum

Hard·Freq 44%·Acc 42.8%

#366Find Leaves of Binary Tree

Medium·Freq 44%·Acc 81.3%

#21Merge Two Sorted Lists

Easy·Freq 39%·Acc 68.5%

#26Remove Duplicates from Sorted Array

Easy·Freq 39%·Acc 63.2%

#40Combination Sum II

Medium·Freq 39%·Acc 59.7%

#46Permutations

Medium·Freq 39%·Acc 82.1%

#48Rotate Image

Medium·Freq 39%·Acc 80.4%

#73Set Matrix Zeroes

Medium·Freq 39%·Acc 63.3%

#79Word Search

Medium·Freq 39%·Acc 47.7%

#141Linked List Cycle

Easy·Freq 39%·Acc 54.7%

#237Delete Node in a Linked List

Medium·Freq 39%·Acc 84.1%

#2472Maximum Number of Non-overlapping Palindrome Substrings

Hard·Freq 39%·Acc 44.9%

#692Top K Frequent Words

Medium·Freq 39%·Acc 60.4%

#694Number of Distinct Islands

Medium·Freq 39%·Acc 62.9%

#1011Capacity To Ship Packages Within D Days

Medium·Freq 39%·Acc 74.3%

#378Kth Smallest Element in a Sorted Matrix

Medium·Freq 39%·Acc 64.8%

#695Max Area of Island

Medium·Freq 39%·Acc 74.1%

#582Kill Process

Medium·Freq 39%·Acc 70.7%

#151Reverse Words in a String

Medium·Freq 39%·Acc 57.0%

#198House Robber

Medium·Freq 39%·Acc 53.4%

#567Permutation in String

Medium·Freq 39%·Acc 49.2%

#133Clone Graph

Medium·Freq 39%·Acc 65.7%

#7Reverse Integer

Medium·Freq 39%·Acc 32.1%

#29Divide Two Integers

Medium·Freq 39%·Acc 20.0%

#3366Minimum Array Sum

Medium·Freq 39%·Acc 31.8%

#50Pow(x, n)

Medium·Freq 38%·Acc 38.9%

#83Remove Duplicates from Sorted List

Easy·Freq 38%·Acc 57.1%

#88Merge Sorted Array

Easy·Freq 38%·Acc 55.2%

#116Populating Next Right Pointers in Each Node

Medium·Freq 38%·Acc 67.4%

#148Sort List

Medium·Freq 38%·Acc 64.8%

#167Two Sum II - Input Array Is Sorted

Medium·Freq 38%·Acc 65.4%

#205Isomorphic Strings

Easy·Freq 38%·Acc 48.7%

#209Minimum Size Subarray Sum

Medium·Freq 38%·Acc 52.2%

#234Palindrome Linked List

Easy·Freq 38%·Acc 58.3%

#273Integer to English Words

Hard·Freq 38%·Acc 35.1%

#69Sqrt(x)

Easy·Freq 38%·Acc 42.1%

#373Find K Pairs with Smallest Sums

Medium·Freq 38%·Acc 42.1%

#387First Unique Character in a String

Easy·Freq 38%·Acc 65.8%

#415Add Strings

Easy·Freq 38%·Acc 52.2%

#463Island Perimeter

Easy·Freq 38%·Acc 74.5%

#696Count Binary Substrings

Easy·Freq 38%·Acc 70.5%

#139Word Break

Medium·Freq 38%·Acc 49.6%

#739Daily Temperatures

Medium·Freq 38%·Acc 68.9%

#1010Pairs of Songs With Total Durations Divisible by 60

Medium·Freq 38%·Acc 53.5%

#1047Remove All Adjacent Duplicates In String

Easy·Freq 38%·Acc 73.6%

#2151Maximum Good People Based on Statements

Hard·Freq 38%·Acc 52.6%

#912Sort an Array

Medium·Freq 38%·Acc 55.9%

#114Flatten Binary Tree to Linked List

Medium·Freq 38%·Acc 71.1%

#496Next Greater Element I

Easy·Freq 38%·Acc 76.5%

#153Find Minimum in Rotated Sorted Array

Medium·Freq 38%·Acc 55.0%

#227Basic Calculator II

Medium·Freq 38%·Acc 47.0%

#1283Find the Smallest Divisor Given a Threshold

Medium·Freq 38%·Acc 66.3%

#340Longest Substring with At Most K Distinct Characters

Medium·Freq 38%·Acc 50.1%

#2303Calculate Amount Paid in Taxes

Easy·Freq 38%·Acc 69.5%

#1290Convert Binary Number in a Linked List to Integer

Easy·Freq 38%·Acc 82.4%

#863All Nodes Distance K in Binary Tree

Medium·Freq 38%·Acc 67.8%

#120Triangle

Medium·Freq 38%·Acc 59.9%

#1249Minimum Remove to Make Valid Parentheses

Medium·Freq 38%·Acc 71.5%

#713Subarray Product Less Than K

Medium·Freq 38%·Acc 54.7%

#2448Minimum Cost to Make Array Equal

Hard·Freq 38%·Acc 46.8%

#2008Maximum Earnings From Taxi

Medium·Freq 38%·Acc 46.6%

#841Keys and Rooms

Medium·Freq 38%·Acc 76.0%

#796Rotate String

Easy·Freq 38%·Acc 66.9%

#130Surrounded Regions

Medium·Freq 38%·Acc 45.8%

#1190Reverse Substrings Between Each Pair of Parentheses

Medium·Freq 38%·Acc 72.0%

#36Valid Sudoku

Medium·Freq 38%·Acc 64.7%

#70Climbing Stairs

Easy·Freq 38%·Acc 54.2%

#403Frog Jump

Hard·Freq 38%·Acc 47.4%

#92Reverse Linked List II

Medium·Freq 38%·Acc 51.9%

#2402Meeting Rooms III

Hard·Freq 38%·Acc 51.4%

#1309Decrypt String from Alphabet to Integer Mapping

Easy·Freq 38%·Acc 80.6%

#1254Number of Closed Islands

Medium·Freq 38%·Acc 67.2%

#920Number of Music Playlists

Hard·Freq 38%·Acc 60.1%

#1169Invalid Transactions

Medium·Freq 38%·Acc 32.4%

#2204Distance to a Cycle in Undirected Graph

Hard·Freq 38%·Acc 73.9%

#752Open the Lock

Medium·Freq 38%·Acc 61.4%

#129Sum Root to Leaf Numbers

Medium·Freq 38%·Acc 70.1%

#224Basic Calculator

Hard·Freq 38%·Acc 47.0%

#435Non-overlapping Intervals

Medium·Freq 38%·Acc 57.4%

#217Contains Duplicate

Easy·Freq 38%·Acc 64.5%

#1507Reformat Date

Easy·Freq 38%·Acc 68.7%

#135Candy

Hard·Freq 38%·Acc 48.8%

#2561Rearranging Fruits

Hard·Freq 38%·Acc 57.3%

#115Distinct Subsequences

Hard·Freq 38%·Acc 52.2%

#402Remove K Digits

Medium·Freq 33%·Acc 37.2%

#10Regular Expression Matching

Hard·Freq 25%·Acc 31.2%

#32Longest Valid Parentheses

Hard·Freq 25%·Acc 39.1%

#37Sudoku Solver

Hard·Freq 25%·Acc 65.6%

#39Combination Sum

Medium·Freq 25%·Acc 76.8%

#45Jump Game II

Medium·Freq 25%·Acc 43.1%

#57Insert Interval

Medium·Freq 25%·Acc 45.5%

#91Decode Ways

Medium·Freq 25%·Acc 38.2%

#113Path Sum II

Medium·Freq 25%·Acc 62.5%

#162Find Peak Element

Medium·Freq 25%·Acc 47.1%

#189Rotate Array

Medium·Freq 25%·Acc 45.2%

#226Invert Binary Tree

Easy·Freq 25%·Acc 80.2%

#287Find the Duplicate Number

Medium·Freq 25%·Acc 64.6%

#468Validate IP Address

Medium·Freq 25%·Acc 28.4%

#19Remove Nth Node From End of List

Medium·Freq 25%·Acc 52.0%

#622Design Circular Queue

Medium·Freq 25%·Acc 55.0%

#973K Closest Points to Origin

Medium·Freq 25%·Acc 69.2%

#1166Design File System

Medium·Freq 25%·Acc 65.2%

#1347Minimum Number of Steps to Make Two Strings Anagram

Medium·Freq 25%·Acc 82.6%

#1636Sort Array by Increasing Frequency

Easy·Freq 25%·Acc 80.9%

#1721Swapping Nodes in a Linked List

Medium·Freq 25%·Acc 69.6%

#704Binary Search

Easy·Freq 25%·Acc 61.1%

#82Remove Duplicates from Sorted List II

Medium·Freq 25%·Acc 52.1%

#410Split Array Largest Sum

Hard·Freq 25%·Acc 60.9%

#407Trapping Rain Water II

Hard·Freq 25%·Acc 64.1%

#78Subsets

Medium·Freq 25%·Acc 82.5%

#166Fraction to Recurring Decimal

Medium·Freq 25%·Acc 31.1%

#729My Calendar I

Medium·Freq 25%·Acc 58.3%

#1079Letter Tile Possibilities

Medium·Freq 25%·Acc 83.5%

#2592Maximize Greatness of an Array

Medium·Freq 25%·Acc 61.9%

#142Linked List Cycle II

Medium·Freq 25%·Acc 58.5%

#297Serialize and Deserialize Binary Tree

Hard·Freq 25%·Acc 61.1%

#2226Maximum Candies Allocated to K Children

Medium·Freq 25%·Acc 49.9%

#605Can Place Flowers

Easy·Freq 25%·Acc 29.2%

#442Find All Duplicates in an Array

Medium·Freq 25%·Acc 77.0%

#772Basic Calculator III

Hard·Freq 25%·Acc 53.4%

#2622Cache With Time Limit

Medium·Freq 25%·Acc 76.2%

#2127Maximum Employees to Be Invited to a Meeting

Hard·Freq 25%·Acc 61.8%

#2055Plates Between Candles

Medium·Freq 25%·Acc 47.6%

#203Remove Linked List Elements

Easy·Freq 25%·Acc 54.9%

#321Create Maximum Number

Hard·Freq 25%·Acc 35.9%

#339Nested List Weight Sum

Medium·Freq 25%·Acc 86.0%

#38Count and Say

Medium·Freq 25%·Acc 63.3%

#301Remove Invalid Parentheses

Hard·Freq 25%·Acc 50.0%

#1824Minimum Sideway Jumps

Medium·Freq 25%·Acc 51.8%

#368Largest Divisible Subset

Medium·Freq 25%·Acc 49.9%

#212Word Search II

Hard·Freq 25%·Acc 38.6%

#104Maximum Depth of Binary Tree

Easy·Freq 25%·Acc 78.4%

#43Multiply Strings

Medium·Freq 25%·Acc 44.4%

#311Sparse Matrix Multiplication

Medium·Freq 25%·Acc 69.3%

#556Next Greater Element III

Medium·Freq 25%·Acc 35.4%

#2439Minimize Maximum of Array

Medium·Freq 25%·Acc 46.6%

#1071Greatest Common Divisor of Strings

Easy·Freq 25%·Acc 54.0%

#2593Sum Smaller

Medium·Freq 25%·Acc 51.4%

#1768Merge Strings Alternately

Easy·Freq 25%·Acc 82.1%

#1248Count Number of Nice Subarrays

Medium·Freq 25%·Acc 75.4%

#150Evaluate Reverse Polish Notation

Medium·Freq 25%·Acc 58.2%

#2181Merge Nodes in Between Zeros

Medium·Freq 25%·Acc 89.7%

#271Encode and Decode Strings

Medium·Freq 25%·Acc 51.7%

#1312Minimum Insertion Steps to Make a String Palindrome

Hard·Freq 25%·Acc 74.2%

#211Design Add and Search Words Data Structure

Medium·Freq 25%·Acc 48.7%

#545Boundary of Binary Tree

Medium·Freq 25%·Acc 48.2%

#365Water and Jug Problem

Medium·Freq 25%·Acc 45.9%

#1492The kth Factor of n

Medium·Freq 25%·Acc 70.5%

#2047Number of Valid Words in a Sentence

Easy·Freq 25%·Acc 31.3%

#1526Minimum Number of Increments on Subarrays to Form a Target Array

Hard·Freq 25%·Acc 78.2%

#2603Collect Coins in a Tree

Hard·Freq 25%·Acc 39.5%

#1539Kth Missing Positive Number

Easy·Freq 25%·Acc 63.7%

#325Maximum Size Subarray Sum Equals k

Medium·Freq 25%·Acc 50.9%

#445Add Two Numbers II

Medium·Freq 25%·Acc 62.8%

#1095Find in Mountain Array

Hard·Freq 25%·Acc 41.9%

#260Single Number III

Medium·Freq 25%·Acc 70.2%

#84Largest Rectangle in Histogram

Hard·Freq 25%·Acc 50.3%

#338Counting Bits

Easy·Freq 25%·Acc 80.7%

#2422Merge Operations to Turn Array Into a Palindrome

Medium·Freq 25%·Acc 68.9%

#2858Minimum Edge Reversals So Every Node Is Reachable

Hard·Freq 25%·Acc 60.0%

#44Wildcard Matching

Hard·Freq 25%·Acc 32.3%

#1481Least Number of Unique Integers after K Removals

Medium·Freq 25%·Acc 63.9%

#107Binary Tree Level Order Traversal II

Medium·Freq 25%·Acc 68.6%

#684Redundant Connection

Medium·Freq 25%·Acc 67.9%

#1197Minimum Knight Moves

Medium·Freq 25%·Acc 42.0%

#815Bus Routes

Hard·Freq 25%·Acc 47.4%

#3650Minimum Cost Path with Edge Reversals

Medium·Freq 25%·Acc 61.8%

#1488Avoid Flood in The City

Medium·Freq 25%·Acc 39.0%

#202Happy Number

Easy·Freq 25%·Acc 59.9%

#3680Generate Schedule

Medium·Freq 25%·Acc 24.9%

#733Flood Fill

Easy·Freq 25%·Acc 68.6%

#1633Percentage of Users Attended a ContestSQL

Easy·Freq 25%·Acc 60.6%

#25Reverse Nodes in k-Group

Hard·Freq 25%·Acc 66.6%

#362Design Hit Counter

Medium·Freq 25%·Acc 69.7%

#2043Simple Bank System

Medium·Freq 25%·Acc 69.7%

#3203Find Minimum Diameter After Merging Two Trees

Hard·Freq 25%·Acc 57.0%

#437Path Sum III

Medium·Freq 25%·Acc 46.5%

#1193Monthly Transactions ISQL

Medium·Freq 25%·Acc 59.4%

#1057Campus Bikes

Medium·Freq 25%·Acc 59.1%

#968Binary Tree Cameras

Hard·Freq 25%·Acc 0.5%

#68Text Justification

Hard·Freq 25%·Acc 51.5%

#844Backspace String Compare

Easy·Freq 25%·Acc 50.0%

#992Subarrays with K Different Integers

Hard·Freq 25%·Acc 68.6%

#1004Max Consecutive Ones III

Medium·Freq 25%·Acc 68.0%

#1046Last Stone Weight

Easy·Freq 25%·Acc 66.6%

#716Max Stack

Hard·Freq 25%·Acc 46.0%

#1547Minimum Cost to Cut a Stick

Hard·Freq 25%·Acc 63.3%

#327Count of Range Sum

Hard·Freq 25%·Acc 39.3%

#2208Minimum Operations to Halve Array Sum

Medium·Freq 25%·Acc 50.3%

#1267Count Servers that Communicate

Medium·Freq 25%·Acc 73.5%

#24Swap Nodes in Pairs

Medium·Freq 25%·Acc 69.8%

#268Missing Number

Easy·Freq 25%·Acc 72.3%

#	Problem	Difficulty	Frequency↓	Acceptance
#146	LRU Cache3 sources	Medium	100%	47.6%
#3	Longest Substring Without Repeating Characters3 sources	Medium	88%	39.4%
#200	Number of Islands3 sources	Medium	88%	64.7%
#1	Two Sum3 sources	Easy	88%	57.8%
#49	Group Anagrams3 sources	Medium	82%	72.9%
#347	Top K Frequent Elements3 sources	Medium	76%	66.8%
#23	Merge k Sorted Lists3 sources	Hard	75%	60.0%
#239	Sliding Window Maximum3 sources	Hard	75%	49.0%
#20	Valid Parentheses3 sources	Easy	75%	44.5%
#56	Merge Intervals3 sources	Medium	75%	52.3%
#54	Spiral Matrix3 sources	Medium	75%	57.2%
#253	Meeting Rooms II3 sources	Medium	75%	52.7%
#33	Search in Rotated Sorted Array3 sources	Medium	68%	45.2%
#460	LFU Cache3 sources	Hard	66%	49.7%
#5	Longest Palindromic Substring3 sources	Medium	64%	38.2%
#206	Reverse Linked List3 sources	Easy	64%	80.8%
#1209	Remove All Adjacent Duplicates in String II3 sources	Medium	64%	61.6%
#11	Container With Most Water3 sources	Medium	63%	60.4%
#53	Maximum Subarray3 sources	Medium	63%	53.5%
#155	Min Stack3 sources	Medium	63%	58.4%
#735	Asteroid Collision3 sources	Medium	63%	48.4%
#1200	Minimum Absolute Difference3 sources	Easy	63%	75.2%
#15	3Sum3 sources	Medium	63%	39.4%
#42	Trapping Rain Water3 sources	Hard	63%	67.7%
#3438	Find Valid Pair of Adjacent Digits in String3 sources	Easy	63%	61.1%
#13	Roman to Integer3 sources	Easy	63%	66.8%
#22	Generate Parentheses3 sources	Medium	63%	78.9%
#128	Longest Consecutive Sequence3 sources	Medium	63%	47.2%
#199	Binary Tree Right Side View3 sources	Medium	63%	70.7%
#242	Valid Anagram3 sources	Easy	63%	68.3%
#394	Decode String3 sources	Medium	63%	62.9%
#1797	Design Authentication Manager3 sources	Medium	63%	58.7%
#875	Koko Eating Bananas3 sources	Medium	63%	50.2%
#121	Best Time to Buy and Sell Stock3 sources	Easy	63%	57.0%
#2506	Count Pairs Of Similar Strings3 sources	Easy	63%	73.8%
#2836	Maximize Value of Function in a Ball Passing Game3 sources	Hard	63%	31.5%
#994	Rotting Oranges3 sources	Medium	63%	59.0%
#236	Lowest Common Ancestor of a Binary Tree3 sources	Medium	63%	69.7%
#2466	Count Ways To Build Good Strings3 sources	Medium	63%	58.9%
#2580	Count Ways to Group Overlapping Ranges3 sources	Medium	63%	39.3%
#2549	Count Distinct Numbers on Board3 sources	Easy	63%	61.8%
#3012	Minimize Length of Array Using Operations3 sources	Medium	63%	36.1%
#3015	Count the Number of Houses at a Certain Distance I3 sources	Medium	63%	58.1%
#3017	Count the Number of Houses at a Certain Distance II3 sources	Hard	63%	23.8%
#2192	All Ancestors of a Node in a Directed Acyclic Graph3 sources	Medium	63%	62.3%
#1380	Lucky Numbers in a Matrix3 sources	Easy	63%	80.1%
#1410	HTML Entity Parser3 sources	Medium	63%	50.1%
#1611	Minimum One Bit Operations to Make Integers Zero3 sources	Hard	63%	78.3%
#295	Find Median from Data Stream3 sources	Hard	58%	54.7%
#75	Sort Colors3 sources	Medium	56%	70.0%
#207	Course Schedule3 sources	Medium	56%	51.8%
#1353	Maximum Number of Events That Can Be Attended3 sources	Medium	56%	39.0%
#3799	Word Squares II3 sources	Medium	56%	55.2%
#4	Median of Two Sorted Arrays3 sources	Hard	53%	47.0%
#14	Longest Common Prefix3 sources	Easy	53%	47.9%
#41	First Missing Positive3 sources	Hard	53%	43.2%
#93	Restore IP Addresses3 sources	Medium	53%	56.4%
#169	Majority Element3 sources	Easy	53%	66.4%
#322	Coin Change3 sources	Medium	53%	48.7%
#450	Delete Node in a BST3 sources	Medium	53%	55.0%
#525	Contiguous Array3 sources	Medium	53%	51.7%
#981	Time Based Key-Value Store3 sources	Medium	53%	50.0%
#71	Simplify Path3 sources	Medium	53%	50.9%
#6	Zigzag Conversion3 sources	Medium	51%	54.5%
#76	Minimum Window Substring3 sources	Hard	51%	47.9%
#103	Binary Tree Zigzag Level Order Traversal3 sources	Medium	51%	64.1%
#215	Kth Largest Element in an Array3 sources	Medium	51%	69.1%
#230	Kth Smallest Element in a BST3 sources	Medium	51%	77.0%
#238	Product of Array Except Self3 sources	Medium	51%	69.1%
#359	Logger Rate Limiter3 sources	Easy	51%	76.9%
#102	Binary Tree Level Order Traversal3 sources	Medium	51%	73.0%
#543	Diameter of Binary Tree3 sources	Easy	51%	65.8%
#621	Task Scheduler3 sources	Medium	51%	63.4%
#697	Degree of an Array3 sources	Easy	51%	58.5%
#987	Vertical Order Traversal of a Binary Tree3 sources	Hard	51%	54.2%
#208	Implement Trie (Prefix Tree)3 sources	Medium	51%	69.7%
#127	Word Ladder3 sources	Hard	51%	46.0%
#2954	Count the Number of Infection Sequences3 sources	Hard	51%	38.0%
#17	Letter Combinations of a Phone Number3 sources	Medium	50%	66.4%
#34	Find First and Last Position of Element in Sorted Array3 sources	Medium	50%	49.3%
#134	Gas Station3 sources	Medium	50%	48.3%
#138	Copy List with Random Pointer3 sources	Medium	50%	63.3%
#210	Course Schedule II3 sources	Medium	50%	55.9%
#221	Maximal Square3 sources	Medium	50%	50.6%
#283	Move Zeroes3 sources	Easy	50%	64.1%
#345	Reverse Vowels of a String3 sources	Easy	50%	61.7%
#443	String Compression3 sources	Medium	50%	60.3%
#588	Design In-Memory File System3 sources	Hard	50%	48.3%
#2291	Maximum Profit From Trading Stocks3 sources	Medium	50%	48.3%
#125	Valid Palindrome3 sources	Easy	50%	53.7%
#647	Palindromic Substrings3 sources	Medium	50%	73.0%
#51	N-Queens3 sources	Hard	50%	76.0%
#1669	Merge In Between Linked Lists3 sources	Medium	50%	83.1%
#755	Pour Water3 sources	Medium	50%	49.1%
#498	Diagonal Traverse3 sources	Medium	50%	67.3%
#845	Longest Mountain in Array3 sources	Medium	50%	42.3%
#98	Validate Binary Search Tree3 sources	Medium	50%	36.0%
#124	Binary Tree Maximum Path Sum3 sources	Hard	50%	42.5%
#140	Word Break II3 sources	Hard	50%	55.8%
#240	Search a 2D Matrix II3 sources	Medium	50%	57.6%
#74	Search a 2D Matrix3 sources	Medium	50%	54.3%
#380	Insert Delete GetRandom O(1)3 sources	Medium	50%	55.4%
#1268	Search Suggestions System3 sources	Medium	50%	65.2%
#300	Longest Increasing Subsequence3 sources	Medium	50%	59.7%
#96	Unique Binary Search Trees	Medium	50%	63.9%
#2	Add Two Numbers3 sources	Medium	44%	48.8%
#12	Integer to Roman3 sources	Medium	44%	71.2%
#55	Jump Game3 sources	Medium	44%	41.2%
#61	Rotate List3 sources	Medium	44%	42.9%
#179	Largest Number3 sources	Medium	44%	43.3%
#9	Palindrome Number3 sources	Easy	44%	60.7%
#252	Meeting Rooms3 sources	Easy	44%	59.5%
#540	Single Element in a Sorted Array3 sources	Medium	44%	59.3%
#560	Subarray Sum Equals K3 sources	Medium	44%	47.7%
#767	Reorganize String3 sources	Medium	44%	57.3%
#706	Design HashMap3 sources	Easy	44%	66.7%
#1235	Maximum Profit in Job Scheduling3 sources	Hard	44%	54.8%
#1823	Find the Winner of the Circular Game3 sources	Medium	44%	82.3%
#2062	Count Vowel Substrings of a String3 sources	Easy	44%	73.3%
#31	Next Permutation3 sources	Medium	44%	45.6%
#1944	Number of Visible People in a Queue3 sources	Hard	44%	73.3%
#176	Second Highest Salary3 sourcesSQL	Medium	44%	47.5%
#829	Consecutive Numbers Sum3 sources	Hard	44%	42.8%
#366	Find Leaves of Binary Tree3 sources	Medium	44%	81.3%
#21	Merge Two Sorted Lists3 sources	Easy	39%	68.5%
#26	Remove Duplicates from Sorted Array3 sources	Easy	39%	63.2%
#40	Combination Sum II3 sources	Medium	39%	59.7%
#46	Permutations3 sources	Medium	39%	82.1%
#48	Rotate Image3 sources	Medium	39%	80.4%
#73	Set Matrix Zeroes3 sources	Medium	39%	63.3%
#79	Word Search3 sources	Medium	39%	47.7%
#141	Linked List Cycle3 sources	Easy	39%	54.7%
#237	Delete Node in a Linked List3 sources	Medium	39%	84.1%
#2472	Maximum Number of Non-overlapping Palindrome Substrings3 sources	Hard	39%	44.9%
#692	Top K Frequent Words3 sources	Medium	39%	60.4%
#694	Number of Distinct Islands3 sources	Medium	39%	62.9%
#1011	Capacity To Ship Packages Within D Days3 sources	Medium	39%	74.3%
#378	Kth Smallest Element in a Sorted Matrix3 sources	Medium	39%	64.8%
#695	Max Area of Island3 sources	Medium	39%	74.1%
#582	Kill Process3 sources	Medium	39%	70.7%
#151	Reverse Words in a String3 sources	Medium	39%	57.0%
#198	House Robber3 sources	Medium	39%	53.4%
#567	Permutation in String3 sources	Medium	39%	49.2%
#133	Clone Graph3 sources	Medium	39%	65.7%
#7	Reverse Integer3 sources	Medium	39%	32.1%
#29	Divide Two Integers3 sources	Medium	39%	20.0%
#3366	Minimum Array Sum3 sources	Medium	39%	31.8%
#50	Pow(x, n)3 sources	Medium	38%	38.9%
#83	Remove Duplicates from Sorted List3 sources	Easy	38%	57.1%
#88	Merge Sorted Array3 sources	Easy	38%	55.2%
#116	Populating Next Right Pointers in Each Node3 sources	Medium	38%	67.4%
#148	Sort List3 sources	Medium	38%	64.8%
#167	Two Sum II - Input Array Is Sorted3 sources	Medium	38%	65.4%
#205	Isomorphic Strings3 sources	Easy	38%	48.7%
#209	Minimum Size Subarray Sum3 sources	Medium	38%	52.2%
#234	Palindrome Linked List3 sources	Easy	38%	58.3%
#273	Integer to English Words3 sources	Hard	38%	35.1%
#69	Sqrt(x)3 sources	Easy	38%	42.1%
#373	Find K Pairs with Smallest Sums3 sources	Medium	38%	42.1%
#387	First Unique Character in a String3 sources	Easy	38%	65.8%
#415	Add Strings3 sources	Easy	38%	52.2%
#463	Island Perimeter3 sources	Easy	38%	74.5%
#696	Count Binary Substrings3 sources	Easy	38%	70.5%
#139	Word Break3 sources	Medium	38%	49.6%
#739	Daily Temperatures3 sources	Medium	38%	68.9%
#1010	Pairs of Songs With Total Durations Divisible by 603 sources	Medium	38%	53.5%
#1047	Remove All Adjacent Duplicates In String3 sources	Easy	38%	73.6%
#2151	Maximum Good People Based on Statements3 sources	Hard	38%	52.6%
#912	Sort an Array3 sources	Medium	38%	55.9%
#114	Flatten Binary Tree to Linked List3 sources	Medium	38%	71.1%
#496	Next Greater Element I3 sources	Easy	38%	76.5%
#153	Find Minimum in Rotated Sorted Array3 sources	Medium	38%	55.0%
#227	Basic Calculator II3 sources	Medium	38%	47.0%
#1283	Find the Smallest Divisor Given a Threshold3 sources	Medium	38%	66.3%
#340	Longest Substring with At Most K Distinct Characters3 sources	Medium	38%	50.1%
#2303	Calculate Amount Paid in Taxes3 sources	Easy	38%	69.5%
#1290	Convert Binary Number in a Linked List to Integer3 sources	Easy	38%	82.4%
#863	All Nodes Distance K in Binary Tree3 sources	Medium	38%	67.8%
#120	Triangle3 sources	Medium	38%	59.9%
#1249	Minimum Remove to Make Valid Parentheses3 sources	Medium	38%	71.5%
#713	Subarray Product Less Than K3 sources	Medium	38%	54.7%
#2448	Minimum Cost to Make Array Equal3 sources	Hard	38%	46.8%
#2008	Maximum Earnings From Taxi3 sources	Medium	38%	46.6%
#841	Keys and Rooms3 sources	Medium	38%	76.0%
#796	Rotate String3 sources	Easy	38%	66.9%
#130	Surrounded Regions3 sources	Medium	38%	45.8%
#1190	Reverse Substrings Between Each Pair of Parentheses3 sources	Medium	38%	72.0%
#36	Valid Sudoku3 sources	Medium	38%	64.7%
#70	Climbing Stairs3 sources	Easy	38%	54.2%
#403	Frog Jump3 sources	Hard	38%	47.4%
#92	Reverse Linked List II3 sources	Medium	38%	51.9%
#2402	Meeting Rooms III3 sources	Hard	38%	51.4%
#1309	Decrypt String from Alphabet to Integer Mapping3 sources	Easy	38%	80.6%
#1254	Number of Closed Islands3 sources	Medium	38%	67.2%
#920	Number of Music Playlists3 sources	Hard	38%	60.1%
#1169	Invalid Transactions3 sources	Medium	38%	32.4%
#2204	Distance to a Cycle in Undirected Graph3 sources	Hard	38%	73.9%
#752	Open the Lock3 sources	Medium	38%	61.4%
#129	Sum Root to Leaf Numbers3 sources	Medium	38%	70.1%
#224	Basic Calculator3 sources	Hard	38%	47.0%
#435	Non-overlapping Intervals3 sources	Medium	38%	57.4%
#217	Contains Duplicate3 sources	Easy	38%	64.5%
#1507	Reformat Date3 sources	Easy	38%	68.7%
#135	Candy3 sources	Hard	38%	48.8%
#2561	Rearranging Fruits	Hard	38%	57.3%
#115	Distinct Subsequences	Hard	38%	52.2%
#402	Remove K Digits3 sources	Medium	33%	37.2%
#10	Regular Expression Matching3 sources	Hard	25%	31.2%
#32	Longest Valid Parentheses3 sources	Hard	25%	39.1%
#37	Sudoku Solver3 sources	Hard	25%	65.6%
#39	Combination Sum3 sources	Medium	25%	76.8%
#45	Jump Game II3 sources	Medium	25%	43.1%
#57	Insert Interval3 sources	Medium	25%	45.5%
#91	Decode Ways3 sources	Medium	25%	38.2%
#113	Path Sum II3 sources	Medium	25%	62.5%
#162	Find Peak Element3 sources	Medium	25%	47.1%
#189	Rotate Array3 sources	Medium	25%	45.2%
#226	Invert Binary Tree3 sources	Easy	25%	80.2%
#287	Find the Duplicate Number3 sources	Medium	25%	64.6%
#468	Validate IP Address3 sources	Medium	25%	28.4%
#19	Remove Nth Node From End of List3 sources	Medium	25%	52.0%
#622	Design Circular Queue3 sources	Medium	25%	55.0%
#973	K Closest Points to Origin3 sources	Medium	25%	69.2%
#1166	Design File System3 sources	Medium	25%	65.2%
#1347	Minimum Number of Steps to Make Two Strings Anagram3 sources	Medium	25%	82.6%
#1636	Sort Array by Increasing Frequency3 sources	Easy	25%	80.9%
#1721	Swapping Nodes in a Linked List3 sources	Medium	25%	69.6%
#704	Binary Search3 sources	Easy	25%	61.1%
#82	Remove Duplicates from Sorted List II3 sources	Medium	25%	52.1%
#410	Split Array Largest Sum3 sources	Hard	25%	60.9%
#407	Trapping Rain Water II3 sources	Hard	25%	64.1%
#78	Subsets3 sources	Medium	25%	82.5%
#166	Fraction to Recurring Decimal3 sources	Medium	25%	31.1%
#729	My Calendar I3 sources	Medium	25%	58.3%
#1079	Letter Tile Possibilities3 sources	Medium	25%	83.5%
#2592	Maximize Greatness of an Array3 sources	Medium	25%	61.9%
#142	Linked List Cycle II3 sources	Medium	25%	58.5%
#297	Serialize and Deserialize Binary Tree3 sources	Hard	25%	61.1%
#2226	Maximum Candies Allocated to K Children3 sources	Medium	25%	49.9%
#605	Can Place Flowers3 sources	Easy	25%	29.2%
#442	Find All Duplicates in an Array3 sources	Medium	25%	77.0%
#772	Basic Calculator III3 sources	Hard	25%	53.4%
#2622	Cache With Time Limit3 sources	Medium	25%	76.2%
#2127	Maximum Employees to Be Invited to a Meeting3 sources	Hard	25%	61.8%
#2055	Plates Between Candles3 sources	Medium	25%	47.6%
#203	Remove Linked List Elements3 sources	Easy	25%	54.9%
#321	Create Maximum Number3 sources	Hard	25%	35.9%
#339	Nested List Weight Sum3 sources	Medium	25%	86.0%
#38	Count and Say3 sources	Medium	25%	63.3%
#301	Remove Invalid Parentheses3 sources	Hard	25%	50.0%
#1824	Minimum Sideway Jumps3 sources	Medium	25%	51.8%
#368	Largest Divisible Subset3 sources	Medium	25%	49.9%
#212	Word Search II3 sources	Hard	25%	38.6%
#104	Maximum Depth of Binary Tree3 sources	Easy	25%	78.4%
#43	Multiply Strings3 sources	Medium	25%	44.4%
#311	Sparse Matrix Multiplication3 sources	Medium	25%	69.3%
#556	Next Greater Element III3 sources	Medium	25%	35.4%
#2439	Minimize Maximum of Array3 sources	Medium	25%	46.6%
#1071	Greatest Common Divisor of Strings3 sources	Easy	25%	54.0%
#259	3Sum Smaller3 sources	Medium	25%	51.4%
#1768	Merge Strings Alternately3 sources	Easy	25%	82.1%
#1248	Count Number of Nice Subarrays3 sources	Medium	25%	75.4%
#150	Evaluate Reverse Polish Notation3 sources	Medium	25%	58.2%
#2181	Merge Nodes in Between Zeros3 sources	Medium	25%	89.7%
#271	Encode and Decode Strings3 sources	Medium	25%	51.7%
#1312	Minimum Insertion Steps to Make a String Palindrome3 sources	Hard	25%	74.2%
#211	Design Add and Search Words Data Structure3 sources	Medium	25%	48.7%
#545	Boundary of Binary Tree3 sources	Medium	25%	48.2%
#365	Water and Jug Problem3 sources	Medium	25%	45.9%
#1492	The kth Factor of n3 sources	Medium	25%	70.5%
#2047	Number of Valid Words in a Sentence3 sources	Easy	25%	31.3%
#1526	Minimum Number of Increments on Subarrays to Form a Target Array3 sources	Hard	25%	78.2%
#2603	Collect Coins in a Tree3 sources	Hard	25%	39.5%
#1539	Kth Missing Positive Number3 sources	Easy	25%	63.7%
#325	Maximum Size Subarray Sum Equals k3 sources	Medium	25%	50.9%
#445	Add Two Numbers II3 sources	Medium	25%	62.8%
#1095	Find in Mountain Array3 sources	Hard	25%	41.9%
#260	Single Number III3 sources	Medium	25%	70.2%
#84	Largest Rectangle in Histogram3 sources	Hard	25%	50.3%
#338	Counting Bits3 sources	Easy	25%	80.7%
#2422	Merge Operations to Turn Array Into a Palindrome3 sources	Medium	25%	68.9%
#2858	Minimum Edge Reversals So Every Node Is Reachable3 sources	Hard	25%	60.0%
#44	Wildcard Matching3 sources	Hard	25%	32.3%
#1481	Least Number of Unique Integers after K Removals3 sources	Medium	25%	63.9%
#107	Binary Tree Level Order Traversal II3 sources	Medium	25%	68.6%
#684	Redundant Connection3 sources	Medium	25%	67.9%
#1197	Minimum Knight Moves3 sources	Medium	25%	42.0%
#815	Bus Routes3 sources	Hard	25%	47.4%
#3650	Minimum Cost Path with Edge Reversals3 sources	Medium	25%	61.8%
#1488	Avoid Flood in The City3 sources	Medium	25%	39.0%
#202	Happy Number3 sources	Easy	25%	59.9%
#3680	Generate Schedule3 sources	Medium	25%	24.9%
#733	Flood Fill3 sources	Easy	25%	68.6%
#1633	Percentage of Users Attended a Contest3 sourcesSQL	Easy	25%	60.6%
#25	Reverse Nodes in k-Group3 sources	Hard	25%	66.6%
#362	Design Hit Counter3 sources	Medium	25%	69.7%
#2043	Simple Bank System3 sources	Medium	25%	69.7%
#3203	Find Minimum Diameter After Merging Two Trees3 sources	Hard	25%	57.0%
#437	Path Sum III3 sources	Medium	25%	46.5%
#1193	Monthly Transactions I3 sourcesSQL	Medium	25%	59.4%
#1057	Campus Bikes3 sources	Medium	25%	59.1%
#968	Binary Tree Cameras2 sources	Hard	25%	0.5%
#68	Text Justification	Hard	25%	51.5%
#844	Backspace String Compare	Easy	25%	50.0%
#992	Subarrays with K Different Integers	Hard	25%	68.6%
#1004	Max Consecutive Ones III	Medium	25%	68.0%
#1046	Last Stone Weight	Easy	25%	66.6%
#716	Max Stack	Hard	25%	46.0%
#1547	Minimum Cost to Cut a Stick	Hard	25%	63.3%
#327	Count of Range Sum	Hard	25%	39.3%
#2208	Minimum Operations to Halve Array Sum	Medium	25%	50.3%
#1267	Count Servers that Communicate	Medium	25%	73.5%
#24	Swap Nodes in Pairs	Medium	25%	69.8%
#268	Missing Number	Easy	25%	72.3%

Showing 314 of 314 questionsWindow: All Time

Oracle Technical Interview Overview & Company-Wise Questions

Software engineering and technical interviews at Oracle emphasize real-world problem solving, algorithmic efficiency, and scalable data structure design. The curated dataset above contains 314 verified LeetCode problems, categorized by frequency and filtered across recent interview seasons.

Frequently Asked Questions

What are the top LeetCode questions for Oracle?

Leading questions include LRU Cache, Longest Substring Without Repeating Characters, Number of Islands. Reviewing questions with higher recency (within the last 30 to 90 days) yields the highest return on preparation time.

Where can I practice company-wise LeetCode questions for Oracle?

You can practice all 314 Oracle LeetCode questions right here on LeetMap Pro. Filter by 30-day, 3-month, and 6-month recency, track your progress with local checkpoints, and practice curated SQL problems completely free.

How should I prepare for Oracle coding rounds?

Begin by reviewing Medium-difficulty problems (193 tracked), which constitute the majority of technical rounds. Complement coding practice with foundational DSA patterns like Sliding Window, Two Pointers, and Graph Traversal.

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Recommended Patterns

Dynamic Programming Graph Traversal Two Pointers Roadmap Graph