What are the most frequent LeetCode questions for IBM?

The top problems asked in IBM technical interviews include Fizz Buzz, Merge Intervals, Integer to Roman. In total, 178 verified problems are tracked across Easy (55), Medium (105), and Hard (18) tiers.

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

LeetMap Pro provides a complete, verified list of 178 company-wise IBM 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 IBM 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 IBM coding rounds?

For IBM, Medium difficulty problems represent the largest share (105 problems), followed by Easy (55) and Hard (18). Mastering foundational patterns like Trees, Graphs, and Dynamic Programming is essential.

IBMLeetCode Questions

Verified

178 questions·55 Easy·105 Medium·18 Hard

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

SQL (3)

⌘K

#412Fizz Buzz

Easy·Freq 100%·Acc 75.7%

#56Merge Intervals

Medium·Freq 94%·Acc 52.3%

#12Integer to Roman

Medium·Freq 91%·Acc 71.2%

#3Longest Substring Without Repeating Characters

Medium·Freq 88%·Acc 39.4%

#121Best Time to Buy and Sell Stock

Easy·Freq 88%·Acc 57.0%

#1Two Sum

Easy·Freq 88%·Acc 57.8%

#2580Count Ways to Group Overlapping Ranges

Medium·Freq 88%·Acc 39.3%

#13Roman to Integer

Easy·Freq 83%·Acc 66.8%

#20Valid Parentheses

Easy·Freq 82%·Acc 44.5%

#2602Minimum Operations to Make All Array Elements Equal

Medium·Freq 80%·Acc 38.6%

#48Rotate Image

Medium·Freq 79%·Acc 80.4%

#453Minimum Moves to Equal Array Elements

Medium·Freq 76%·Acc 58.9%

#560Subarray Sum Equals K

Medium·Freq 75%·Acc 47.7%

#3159Find Occurrences of an Element in an Array

Medium·Freq 75%·Acc 73.6%

#3175Find The First Player to win K Games in a Row

Medium·Freq 75%·Acc 40.4%

#3107Minimum Operations to Make Median of Array Equal to K

Medium·Freq 75%·Acc 48.1%

#1355Activity ParticipantsSQL

Medium·Freq 75%·Acc 72.1%

#5Longest Palindromic Substring

Medium·Freq 72%·Acc 38.2%

#2559Count Vowel Strings in Ranges

Medium·Freq 70%·Acc 67.9%

#3402Minimum Operations to Make Columns Strictly Increasing

Easy·Freq 70%·Acc 72.8%

#845Longest Mountain in Array

Medium·Freq 70%·Acc 42.3%

#2545Sort the Students by Their Kth Score

Medium·Freq 67%·Acc 86.0%

#242Valid Anagram

Easy·Freq 67%·Acc 68.3%

#49Group Anagrams

Medium·Freq 65%·Acc 72.9%

#2907Maximum Profitable Triplets With Increasing Prices I

Medium·Freq 65%·Acc 56.1%

#2921Maximum Profitable Triplets With Increasing Prices II

Hard·Freq 65%·Acc 46.2%

#2964Number of Divisible Triplet Sums

Medium·Freq 65%·Acc 67.6%

#3024Type of Triangle

Easy·Freq 65%·Acc 44.0%

#1200Minimum Absolute Difference

Easy·Freq 65%·Acc 75.2%

#3096Minimum Levels to Gain More Points

Medium·Freq 65%·Acc 40.5%

#3147Taking Maximum Energy From the Mystic Dungeon

Medium·Freq 65%·Acc 61.0%

#3145Find Products of Elements of Big Array

Hard·Freq 65%·Acc 25.1%

#2455Average Value of Even Numbers That Are Divisible by Three

Easy·Freq 65%·Acc 63.5%

#2562Find the Array Concatenation Value

Easy·Freq 65%·Acc 72.1%

#3223Minimum Length of String After Operations

Medium·Freq 65%·Acc 75.1%

#754Reach a Number

Medium·Freq 65%·Acc 45.3%

#9Palindrome Number

Easy·Freq 63%·Acc 60.7%

#1710Maximum Units on a Truck

Easy·Freq 63%·Acc 75.0%

#2734Lexicographically Smallest String After Substring Operation

Medium·Freq 63%·Acc 35.2%

#2461Maximum Sum of Distinct Subarrays With Length K

Medium·Freq 63%·Acc 43.2%

#1888Minimum Number of Flips to Make the Binary String Alternating

Medium·Freq 63%·Acc 53.6%

#1004Max Consecutive Ones III

Medium·Freq 63%·Acc 68.0%

#1319Number of Operations to Make Network Connected

Medium·Freq 63%·Acc 66.9%

#153Sum

Medium·Freq 63%·Acc 39.4%

#724Find Pivot Index

Easy·Freq 63%·Acc 63.2%

#1518Water Bottles

Easy·Freq 63%·Acc 72.6%

#17Letter Combinations of a Phone Number

Medium·Freq 63%·Acc 66.4%

#696Count Binary Substrings

Easy·Freq 63%·Acc 70.5%

#2972Count the Number of Incremovable Subarrays II

Hard·Freq 63%·Acc 40.5%

#14Longest Common Prefix

Easy·Freq 61%·Acc 47.9%

#11Container With Most Water

Medium·Freq 58%·Acc 60.4%

#53Maximum Subarray

Medium·Freq 54%·Acc 53.5%

#253Meeting Rooms II

Medium·Freq 54%·Acc 52.7%

#54Spiral Matrix

Medium·Freq 54%·Acc 57.2%

#2950Number of Divisible Substrings

Medium·Freq 54%·Acc 74.7%

#2696Minimum String Length After Removing Substrings

Easy·Freq 54%·Acc 77.2%

#3295Report Spam Message

Medium·Freq 54%·Acc 48.8%

#2231Largest Number After Digit Swaps by Parity

Easy·Freq 54%·Acc 65.6%

#76Minimum Window Substring

Hard·Freq 54%·Acc 47.9%

#1283Find the Smallest Divisor Given a Threshold

Medium·Freq 54%·Acc 66.3%

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

Hard·Freq 54%·Acc 78.2%

#128Longest Consecutive Sequence

Medium·Freq 50%·Acc 47.2%

#146LRU Cache

Medium·Freq 50%·Acc 47.6%

#443String Compression

Medium·Freq 50%·Acc 60.3%

#636Exclusive Time of Functions

Medium·Freq 50%·Acc 66.3%

#98Validate Binary Search Tree

Medium·Freq 50%·Acc 36.0%

#70Climbing Stairs

Easy·Freq 50%·Acc 54.2%

#2506Count Pairs Of Similar Strings

Easy·Freq 50%·Acc 73.8%

#1768Merge Strings Alternately

Easy·Freq 50%·Acc 82.1%

#1051Height Checker

Easy·Freq 50%·Acc 81.8%

#217Contains Duplicate

Easy·Freq 50%·Acc 64.5%

#283Move Zeroes

Easy·Freq 50%·Acc 64.1%

#1167Minimum Cost to Connect Sticks

Medium·Freq 50%·Acc 72.0%

#239Sliding Window Maximum

Hard·Freq 50%·Acc 49.0%

#435Non-overlapping Intervals

Medium·Freq 50%·Acc 57.4%

#680Valid Palindrome II

Easy·Freq 50%·Acc 44.5%

#3627Maximum Median Sum of Subsequences of Size 3

Medium·Freq 50%·Acc 65.1%

#881Boats to Save People

Medium·Freq 50%·Acc 62.0%

#32Longest Valid Parentheses

Hard·Freq 50%·Acc 39.1%

#215Kth Largest Element in an Array

Medium·Freq 50%·Acc 69.1%

#844Backspace String Compare

Easy·Freq 50%·Acc 50.0%

#876Middle of the Linked List

Easy·Freq 49%·Acc 82.1%

#994Rotting Oranges

Medium·Freq 49%·Acc 59.0%

#1834Single-Threaded CPU

Medium·Freq 42%·Acc 47.8%

#832Flipping an Image

Easy·Freq 42%·Acc 83.9%

#51N-Queens

Hard·Freq 42%·Acc 76.0%

#2134Minimum Swaps to Group All 1's Together II

Medium·Freq 42%·Acc 65.7%

#3130Find All Possible Stable Binary Arrays II

Hard·Freq 42%·Acc 58.8%

#2451Odd String Difference

Easy·Freq 42%·Acc 62.1%

#2406Divide Intervals Into Minimum Number of Groups

Medium·Freq 42%·Acc 63.6%

#268Missing Number

Easy·Freq 42%·Acc 72.3%

#1974Minimum Time to Type Word Using Special Typewriter

Easy·Freq 42%·Acc 78.9%

#1910Remove All Occurrences of a Substring

Medium·Freq 42%·Acc 78.6%

#2948Make Lexicographically Smallest Array by Swapping Elements

Medium·Freq 42%·Acc 60.3%

#200Number of Islands

Medium·Freq 42%·Acc 64.7%

#451Sort Characters By Frequency

Medium·Freq 42%·Acc 75.5%

#151Reverse Words in a String

Medium·Freq 42%·Acc 57.0%

#901Online Stock Span

Medium·Freq 42%·Acc 69.4%

#141Linked List Cycle

Easy·Freq 42%·Acc 54.7%

#45Jump Game II

Medium·Freq 42%·Acc 43.1%

#1802Maximum Value at a Given Index in a Bounded Array

Medium·Freq 42%·Acc 38.9%

#31Next Permutation

Medium·Freq 42%·Acc 45.6%

#735Asteroid Collision

Medium·Freq 42%·Acc 48.4%

#322Coin Change

Medium·Freq 42%·Acc 48.7%

#1046Last Stone Weight

Easy·Freq 42%·Acc 66.6%

#2405Optimal Partition of String

Medium·Freq 42%·Acc 78.5%

#2193Minimum Number of Moves to Make Palindrome

Hard·Freq 42%·Acc 53.0%

#1685Sum of Absolute Differences in a Sorted Array

Medium·Freq 42%·Acc 68.4%

#387First Unique Character in a String

Easy·Freq 42%·Acc 65.8%

#2Add Two Numbers

Medium·Freq 42%·Acc 48.8%

#22Generate Parentheses

Medium·Freq 42%·Acc 78.9%

#1758Minimum Changes To Make Alternating Binary String

Easy·Freq 42%·Acc 67.8%

#72Edit Distance

Medium·Freq 42%·Acc 60.9%

#152Maximum Product Subarray

Medium·Freq 42%·Acc 36.7%

#4Median of Two Sorted Arrays

Hard·Freq 38%·Acc 47.0%

#88Merge Sorted Array

Easy·Freq 38%·Acc 55.2%

#169Majority Element

Easy·Freq 38%·Acc 66.4%

#189Rotate Array

Medium·Freq 38%·Acc 45.2%

#238Product of Array Except Self

Medium·Freq 38%·Acc 69.1%

#1208Get Equal Substrings Within Budget

Medium·Freq 38%·Acc 59.9%

#2432The Employee That Worked on the Longest Task

Easy·Freq 38%·Acc 51.9%

#1395Count Number of Teams

Medium·Freq 38%·Acc 70.2%

#2598Smallest Missing Non-negative Integer After Operations

Medium·Freq 38%·Acc 55.9%

#78Subsets

Medium·Freq 38%·Acc 82.5%

#153Find Minimum in Rotated Sorted Array

Medium·Freq 38%·Acc 55.0%

#926Flip String to Monotone Increasing

Medium·Freq 38%·Acc 61.9%

#2587Rearrange Array to Maximize Prefix Score

Medium·Freq 38%·Acc 43.0%

#2390Removing Stars From a String

Medium·Freq 38%·Acc 79.6%

#210Course Schedule II

Medium·Freq 38%·Acc 55.9%

#767Reorganize String

Medium·Freq 38%·Acc 57.3%

#1752Check if Array Is Sorted and Rotated

Easy·Freq 38%·Acc 57.5%

#1539Kth Missing Positive Number

Easy·Freq 38%·Acc 63.7%

#206Reverse Linked List

Easy·Freq 38%·Acc 80.8%

#1413Minimum Value to Get Positive Step by Step Sum

Easy·Freq 38%·Acc 64.8%

#89Gray Code

Medium·Freq 38%·Acc 65.3%

#66Plus One

Easy·Freq 38%·Acc 50.2%

#67Add Binary

Easy·Freq 38%·Acc 58.3%

#135Candy

Hard·Freq 38%·Acc 48.8%

#33Search in Rotated Sorted Array

Medium·Freq 38%·Acc 45.2%

#350Intersection of Two Arrays II

Easy·Freq 38%·Acc 60.1%

#79Word Search

Medium·Freq 38%·Acc 47.7%

#1963Minimum Number of Swaps to Make the String Balanced

Medium·Freq 38%·Acc 78.0%

#1163Last Substring in Lexicographical Order

Hard·Freq 38%·Acc 35.1%

#921Minimum Add to Make Parentheses Valid

Medium·Freq 38%·Acc 74.3%

#35Search Insert Position

Easy·Freq 38%·Acc 51.7%

#475Heaters

Medium·Freq 38%·Acc 42.2%

#1052Grumpy Bookstore Owner

Medium·Freq 38%·Acc 64.1%

#1604Alert Using Same Key-Card Three or More Times in a One Hour Period

Medium·Freq 38%·Acc 46.3%

#155Min Stack

Medium·Freq 38%·Acc 58.4%

#2220Minimum Bit Flips to Convert Number

Easy·Freq 38%·Acc 88.0%

#71Simplify Path

Medium·Freq 38%·Acc 50.9%

#1513Number of Substrings With Only 1s

Medium·Freq 38%·Acc 57.4%

#1877Minimize Maximum Pair Sum in Array

Medium·Freq 38%·Acc 83.3%

#2273Find Resultant Array After Removing Anagrams

Easy·Freq 38%·Acc 70.0%

#42Trapping Rain Water

Hard·Freq 38%·Acc 67.7%

#1312Minimum Insertion Steps to Make a String Palindrome

Hard·Freq 38%·Acc 74.2%

#2429Minimize XOR

Medium·Freq 38%·Acc 62.4%

#485Max Consecutive Ones

Easy·Freq 38%·Acc 65.6%

#875Koko Eating Bananas

Medium·Freq 38%·Acc 50.2%

#3521Find Product Recommendation PairsSQL

Medium·Freq 38%·Acc 62.1%

#647Palindromic Substrings

Medium·Freq 38%·Acc 73.0%

#371Sum of Two Integers

Medium·Freq 38%·Acc 55.8%

#992Subarrays with K Different Integers

Hard·Freq 38%·Acc 68.6%

#2402Meeting Rooms III

Hard·Freq 38%·Acc 51.4%

#75Sort Colors

Medium·Freq 38%·Acc 70.0%

#1838Frequency of the Most Frequent Element

Medium·Freq 38%·Acc 45.0%

#191Number of 1 Bits

Easy·Freq 38%·Acc 77.1%

#2116Check if a Parentheses String Can Be Valid

Medium·Freq 38%·Acc 45.2%

#941Valid Mountain Array

Easy·Freq 38%·Acc 35.4%

#413Arithmetic Slices

Medium·Freq 38%·Acc 64.8%

#2414Length of the Longest Alphabetical Continuous Substring

Medium·Freq 38%·Acc 61.0%

#77Combinations

Medium·Freq 38%·Acc 74.8%

#627Swap Sex of EmployeesSQL

Easy·Freq 38%·Acc 84.8%

#134Gas Station

Medium·Freq 38%·Acc 48.3%

#2593Sum Smaller

Medium·Freq 38%·Acc 51.4%

#23Merge k Sorted Lists

Hard·Freq 38%·Acc 60.0%

#26Remove Duplicates from Sorted Array

Easy·Freq 38%·Acc 63.2%

#202Happy Number

Easy·Freq 38%·Acc 59.9%

#	Problem	Difficulty	Frequency↓	Acceptance
#412	Fizz Buzz3 sources	Easy	100%	75.7%
#56	Merge Intervals3 sources	Medium	94%	52.3%
#12	Integer to Roman3 sources	Medium	91%	71.2%
#3	Longest Substring Without Repeating Characters3 sources	Medium	88%	39.4%
#121	Best Time to Buy and Sell Stock3 sources	Easy	88%	57.0%
#1	Two Sum3 sources	Easy	88%	57.8%
#2580	Count Ways to Group Overlapping Ranges3 sources	Medium	88%	39.3%
#13	Roman to Integer3 sources	Easy	83%	66.8%
#20	Valid Parentheses3 sources	Easy	82%	44.5%
#2602	Minimum Operations to Make All Array Elements Equal3 sources	Medium	80%	38.6%
#48	Rotate Image3 sources	Medium	79%	80.4%
#453	Minimum Moves to Equal Array Elements3 sources	Medium	76%	58.9%
#560	Subarray Sum Equals K3 sources	Medium	75%	47.7%
#3159	Find Occurrences of an Element in an Array3 sources	Medium	75%	73.6%
#3175	Find The First Player to win K Games in a Row3 sources	Medium	75%	40.4%
#3107	Minimum Operations to Make Median of Array Equal to K3 sources	Medium	75%	48.1%
#1355	Activity Participants3 sourcesSQL	Medium	75%	72.1%
#5	Longest Palindromic Substring3 sources	Medium	72%	38.2%
#2559	Count Vowel Strings in Ranges3 sources	Medium	70%	67.9%
#3402	Minimum Operations to Make Columns Strictly Increasing3 sources	Easy	70%	72.8%
#845	Longest Mountain in Array3 sources	Medium	70%	42.3%
#2545	Sort the Students by Their Kth Score3 sources	Medium	67%	86.0%
#242	Valid Anagram3 sources	Easy	67%	68.3%
#49	Group Anagrams3 sources	Medium	65%	72.9%
#2907	Maximum Profitable Triplets With Increasing Prices I3 sources	Medium	65%	56.1%
#2921	Maximum Profitable Triplets With Increasing Prices II3 sources	Hard	65%	46.2%
#2964	Number of Divisible Triplet Sums3 sources	Medium	65%	67.6%
#3024	Type of Triangle3 sources	Easy	65%	44.0%
#1200	Minimum Absolute Difference3 sources	Easy	65%	75.2%
#3096	Minimum Levels to Gain More Points3 sources	Medium	65%	40.5%
#3147	Taking Maximum Energy From the Mystic Dungeon3 sources	Medium	65%	61.0%
#3145	Find Products of Elements of Big Array3 sources	Hard	65%	25.1%
#2455	Average Value of Even Numbers That Are Divisible by Three3 sources	Easy	65%	63.5%
#2562	Find the Array Concatenation Value3 sources	Easy	65%	72.1%
#3223	Minimum Length of String After Operations3 sources	Medium	65%	75.1%
#754	Reach a Number3 sources	Medium	65%	45.3%
#9	Palindrome Number3 sources	Easy	63%	60.7%
#1710	Maximum Units on a Truck3 sources	Easy	63%	75.0%
#2734	Lexicographically Smallest String After Substring Operation3 sources	Medium	63%	35.2%
#2461	Maximum Sum of Distinct Subarrays With Length K3 sources	Medium	63%	43.2%
#1888	Minimum Number of Flips to Make the Binary String Alternating3 sources	Medium	63%	53.6%
#1004	Max Consecutive Ones III3 sources	Medium	63%	68.0%
#1319	Number of Operations to Make Network Connected3 sources	Medium	63%	66.9%
#15	3Sum3 sources	Medium	63%	39.4%
#724	Find Pivot Index3 sources	Easy	63%	63.2%
#1518	Water Bottles3 sources	Easy	63%	72.6%
#17	Letter Combinations of a Phone Number3 sources	Medium	63%	66.4%
#696	Count Binary Substrings3 sources	Easy	63%	70.5%
#2972	Count the Number of Incremovable Subarrays II	Hard	63%	40.5%
#14	Longest Common Prefix3 sources	Easy	61%	47.9%
#11	Container With Most Water3 sources	Medium	58%	60.4%
#53	Maximum Subarray3 sources	Medium	54%	53.5%
#253	Meeting Rooms II3 sources	Medium	54%	52.7%
#54	Spiral Matrix3 sources	Medium	54%	57.2%
#2950	Number of Divisible Substrings3 sources	Medium	54%	74.7%
#2696	Minimum String Length After Removing Substrings3 sources	Easy	54%	77.2%
#3295	Report Spam Message3 sources	Medium	54%	48.8%
#2231	Largest Number After Digit Swaps by Parity3 sources	Easy	54%	65.6%
#76	Minimum Window Substring3 sources	Hard	54%	47.9%
#1283	Find the Smallest Divisor Given a Threshold3 sources	Medium	54%	66.3%
#1526	Minimum Number of Increments on Subarrays to Form a Target Array3 sources	Hard	54%	78.2%
#128	Longest Consecutive Sequence3 sources	Medium	50%	47.2%
#146	LRU Cache3 sources	Medium	50%	47.6%
#443	String Compression3 sources	Medium	50%	60.3%
#636	Exclusive Time of Functions3 sources	Medium	50%	66.3%
#98	Validate Binary Search Tree3 sources	Medium	50%	36.0%
#70	Climbing Stairs3 sources	Easy	50%	54.2%
#2506	Count Pairs Of Similar Strings3 sources	Easy	50%	73.8%
#1768	Merge Strings Alternately3 sources	Easy	50%	82.1%
#1051	Height Checker3 sources	Easy	50%	81.8%
#217	Contains Duplicate3 sources	Easy	50%	64.5%
#283	Move Zeroes3 sources	Easy	50%	64.1%
#1167	Minimum Cost to Connect Sticks3 sources	Medium	50%	72.0%
#239	Sliding Window Maximum3 sources	Hard	50%	49.0%
#435	Non-overlapping Intervals3 sources	Medium	50%	57.4%
#680	Valid Palindrome II3 sources	Easy	50%	44.5%
#3627	Maximum Median Sum of Subsequences of Size 33 sources	Medium	50%	65.1%
#881	Boats to Save People3 sources	Medium	50%	62.0%
#32	Longest Valid Parentheses3 sources	Hard	50%	39.1%
#215	Kth Largest Element in an Array3 sources	Medium	50%	69.1%
#844	Backspace String Compare3 sources	Easy	50%	50.0%
#876	Middle of the Linked List3 sources	Easy	49%	82.1%
#994	Rotting Oranges3 sources	Medium	49%	59.0%
#1834	Single-Threaded CPU3 sources	Medium	42%	47.8%
#832	Flipping an Image3 sources	Easy	42%	83.9%
#51	N-Queens3 sources	Hard	42%	76.0%
#2134	Minimum Swaps to Group All 1's Together II3 sources	Medium	42%	65.7%
#3130	Find All Possible Stable Binary Arrays II3 sources	Hard	42%	58.8%
#2451	Odd String Difference3 sources	Easy	42%	62.1%
#2406	Divide Intervals Into Minimum Number of Groups3 sources	Medium	42%	63.6%
#268	Missing Number3 sources	Easy	42%	72.3%
#1974	Minimum Time to Type Word Using Special Typewriter3 sources	Easy	42%	78.9%
#1910	Remove All Occurrences of a Substring3 sources	Medium	42%	78.6%
#2948	Make Lexicographically Smallest Array by Swapping Elements3 sources	Medium	42%	60.3%
#200	Number of Islands3 sources	Medium	42%	64.7%
#451	Sort Characters By Frequency3 sources	Medium	42%	75.5%
#151	Reverse Words in a String3 sources	Medium	42%	57.0%
#901	Online Stock Span3 sources	Medium	42%	69.4%
#141	Linked List Cycle3 sources	Easy	42%	54.7%
#45	Jump Game II3 sources	Medium	42%	43.1%
#1802	Maximum Value at a Given Index in a Bounded Array3 sources	Medium	42%	38.9%
#31	Next Permutation3 sources	Medium	42%	45.6%
#735	Asteroid Collision3 sources	Medium	42%	48.4%
#322	Coin Change3 sources	Medium	42%	48.7%
#1046	Last Stone Weight3 sources	Easy	42%	66.6%
#2405	Optimal Partition of String3 sources	Medium	42%	78.5%
#2193	Minimum Number of Moves to Make Palindrome3 sources	Hard	42%	53.0%
#1685	Sum of Absolute Differences in a Sorted Array3 sources	Medium	42%	68.4%
#387	First Unique Character in a String3 sources	Easy	42%	65.8%
#2	Add Two Numbers3 sources	Medium	42%	48.8%
#22	Generate Parentheses3 sources	Medium	42%	78.9%
#1758	Minimum Changes To Make Alternating Binary String3 sources	Easy	42%	67.8%
#72	Edit Distance3 sources	Medium	42%	60.9%
#152	Maximum Product Subarray3 sources	Medium	42%	36.7%
#4	Median of Two Sorted Arrays3 sources	Hard	38%	47.0%
#88	Merge Sorted Array3 sources	Easy	38%	55.2%
#169	Majority Element3 sources	Easy	38%	66.4%
#189	Rotate Array3 sources	Medium	38%	45.2%
#238	Product of Array Except Self3 sources	Medium	38%	69.1%
#1208	Get Equal Substrings Within Budget3 sources	Medium	38%	59.9%
#2432	The Employee That Worked on the Longest Task3 sources	Easy	38%	51.9%
#1395	Count Number of Teams3 sources	Medium	38%	70.2%
#2598	Smallest Missing Non-negative Integer After Operations3 sources	Medium	38%	55.9%
#78	Subsets3 sources	Medium	38%	82.5%
#153	Find Minimum in Rotated Sorted Array3 sources	Medium	38%	55.0%
#926	Flip String to Monotone Increasing3 sources	Medium	38%	61.9%
#2587	Rearrange Array to Maximize Prefix Score3 sources	Medium	38%	43.0%
#2390	Removing Stars From a String3 sources	Medium	38%	79.6%
#210	Course Schedule II3 sources	Medium	38%	55.9%
#767	Reorganize String3 sources	Medium	38%	57.3%
#1752	Check if Array Is Sorted and Rotated3 sources	Easy	38%	57.5%
#1539	Kth Missing Positive Number3 sources	Easy	38%	63.7%
#206	Reverse Linked List3 sources	Easy	38%	80.8%
#1413	Minimum Value to Get Positive Step by Step Sum3 sources	Easy	38%	64.8%
#89	Gray Code3 sources	Medium	38%	65.3%
#66	Plus One3 sources	Easy	38%	50.2%
#67	Add Binary3 sources	Easy	38%	58.3%
#135	Candy3 sources	Hard	38%	48.8%
#33	Search in Rotated Sorted Array3 sources	Medium	38%	45.2%
#350	Intersection of Two Arrays II3 sources	Easy	38%	60.1%
#79	Word Search3 sources	Medium	38%	47.7%
#1963	Minimum Number of Swaps to Make the String Balanced3 sources	Medium	38%	78.0%
#1163	Last Substring in Lexicographical Order3 sources	Hard	38%	35.1%
#921	Minimum Add to Make Parentheses Valid3 sources	Medium	38%	74.3%
#35	Search Insert Position3 sources	Easy	38%	51.7%
#475	Heaters3 sources	Medium	38%	42.2%
#1052	Grumpy Bookstore Owner3 sources	Medium	38%	64.1%
#1604	Alert Using Same Key-Card Three or More Times in a One Hour Period3 sources	Medium	38%	46.3%
#155	Min Stack3 sources	Medium	38%	58.4%
#2220	Minimum Bit Flips to Convert Number3 sources	Easy	38%	88.0%
#71	Simplify Path3 sources	Medium	38%	50.9%
#1513	Number of Substrings With Only 1s3 sources	Medium	38%	57.4%
#1877	Minimize Maximum Pair Sum in Array3 sources	Medium	38%	83.3%
#2273	Find Resultant Array After Removing Anagrams3 sources	Easy	38%	70.0%
#42	Trapping Rain Water3 sources	Hard	38%	67.7%
#1312	Minimum Insertion Steps to Make a String Palindrome3 sources	Hard	38%	74.2%
#2429	Minimize XOR3 sources	Medium	38%	62.4%
#485	Max Consecutive Ones3 sources	Easy	38%	65.6%
#875	Koko Eating Bananas3 sources	Medium	38%	50.2%
#3521	Find Product Recommendation Pairs3 sourcesSQL	Medium	38%	62.1%
#647	Palindromic Substrings3 sources	Medium	38%	73.0%
#371	Sum of Two Integers3 sources	Medium	38%	55.8%
#992	Subarrays with K Different Integers3 sources	Hard	38%	68.6%
#2402	Meeting Rooms III3 sources	Hard	38%	51.4%
#75	Sort Colors3 sources	Medium	38%	70.0%
#1838	Frequency of the Most Frequent Element3 sources	Medium	38%	45.0%
#191	Number of 1 Bits3 sources	Easy	38%	77.1%
#2116	Check if a Parentheses String Can Be Valid3 sources	Medium	38%	45.2%
#941	Valid Mountain Array3 sources	Easy	38%	35.4%
#413	Arithmetic Slices3 sources	Medium	38%	64.8%
#2414	Length of the Longest Alphabetical Continuous Substring3 sources	Medium	38%	61.0%
#77	Combinations3 sources	Medium	38%	74.8%
#627	Swap Sex of Employees3 sourcesSQL	Easy	38%	84.8%
#134	Gas Station3 sources	Medium	38%	48.3%
#259	3Sum Smaller	Medium	38%	51.4%
#23	Merge k Sorted Lists	Hard	38%	60.0%
#26	Remove Duplicates from Sorted Array	Easy	38%	63.2%
#202	Happy Number	Easy	38%	59.9%

Showing 178 of 178 questionsWindow: All Time

IBM Technical Interview Overview & Company-Wise Questions

Software engineering and technical interviews at IBM emphasize real-world problem solving, algorithmic efficiency, and scalable data structure design. The curated dataset above contains 178 verified LeetCode problems, categorized by frequency and filtered across recent interview seasons.

Frequently Asked Questions

What are the top LeetCode questions for IBM?

Leading questions include Fizz Buzz, Merge Intervals, Integer to Roman. 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 IBM?

You can practice all 178 IBM 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 IBM coding rounds?

Begin by reviewing Medium-difficulty problems (105 tracked), which constitute the majority of technical rounds. Complement coding practice with foundational DSA patterns like Sliding Window, Two Pointers, and Graph Traversal.

Explore Peer Tech Firms

Google Questions Meta Questions Amazon Questions Apple Questions Netflix Questions Microsoft Questions Bloomberg Questions Citadel Questions

Recommended Patterns

Dynamic Programming Graph Traversal Two Pointers Roadmap Graph