IBM

100 questions tracked93 with solutions

🔍

Frequency scoreSorted highest → lowest frequency✓ Our Solution = we have a detailed walkthrough

Showing 100 of 100 questions

MediumExclusive Time of Functions✓ Our Solution

100

ArrayStack

LeetCode ↗65% acc.

MediumInteger to Roman✓ Our Solution

Hash TableMathString

LeetCode ↗69% acc.

EasyFizz Buzz✓ Our Solution

MathStringSimulation

LeetCode ↗74% acc.

EasyRoman to Integer✓ Our Solution

Hash TableMathString

LeetCode ↗65% acc.

EasyBest Time to Buy and Sell Stock✓ Our Solution

ArrayDynamic Programming

LeetCode ↗55% acc.

EasyTwo Sum✓ Our Solution

ArrayHash Table

LeetCode ↗56% acc.

MediumCount Ways to Group Overlapping Ranges✓ Our Solution

ArraySorting

LeetCode ↗38% acc.

MediumMeeting Rooms II

ArrayTwo PointersGreedySorting+2

LeetCode ↗52% acc.

MediumRotate Image✓ Our Solution

ArrayMathMatrix

LeetCode ↗78% acc.

MediumNumber of Divisible Triplet Sums

ArrayHash Table

LeetCode ↗68% acc.

EasyMinimum Absolute Difference✓ Our Solution

ArraySorting

LeetCode ↗71% acc.

MediumMinimum Operations to Make All Array Elements Equal✓ Our Solution

ArrayBinary SearchSortingPrefix Sum

LeetCode ↗37% acc.

MediumMinimum Operations to Make Median of Array Equal to K✓ Our Solution

ArrayGreedySorting

LeetCode ↗47% acc.

MediumMaximum Profitable Triplets With Increasing Prices I

ArrayBinary Indexed TreeSegment Tree

LeetCode ↗55% acc.

MediumFind The First Player to win K Games in a Row✓ Our Solution

ArraySimulation

LeetCode ↗39% acc.

MediumActivity Participants

Database

LeetCode ↗72% acc.

MediumThe kth Factor of n✓ Our Solution

MathNumber Theory

LeetCode ↗70% acc.

HardFind Products of Elements of Big Array✓ Our Solution

ArrayBinary SearchBit Manipulation

LeetCode ↗22% acc.

MediumMerge Intervals✓ Our Solution

ArraySorting

LeetCode ↗49% acc.

EasyType of Triangle✓ Our Solution

ArrayMathSorting

LeetCode ↗45% acc.

MediumTaking Maximum Energy From the Mystic Dungeon✓ Our Solution

ArrayPrefix Sum

LeetCode ↗41% acc.

MediumFind Occurrences of an Element in an Array✓ Our Solution

ArrayHash Table

LeetCode ↗73% acc.

EasyFind the Array Concatenation Value✓ Our Solution

ArrayTwo PointersSimulation

LeetCode ↗71% acc.

MediumString Compression✓ Our Solution

Two PointersString

LeetCode ↗58% acc.

MediumMinimum Levels to Gain More Points✓ Our Solution

ArrayPrefix Sum

LeetCode ↗39% acc.

MediumSort the Students by Their Kth Score✓ Our Solution

ArraySortingMatrix

LeetCode ↗86% acc.

MediumLongest Substring Without Repeating Characters✓ Our Solution

Hash TableStringSliding Window

LeetCode ↗37% acc.

EasyAverage Value of Even Numbers That Are Divisible by Three✓ Our Solution

ArrayMath

LeetCode ↗62% acc.

HardCount the Number of Incremovable Subarrays II✓ Our Solution

ArrayTwo PointersBinary Search

LeetCode ↗39% acc.

MediumMinimum Length of String After Operations✓ Our Solution

Hash TableStringCounting

LeetCode ↗75% acc.

HardMaximum Profitable Triplets With Increasing Prices II

ArrayBinary Indexed TreeSegment Tree

LeetCode ↗43% acc.

MediumCount Vowel Strings in Ranges✓ Our Solution

ArrayStringPrefix Sum

LeetCode ↗68% acc.

EasyMaximum Units on a Truck✓ Our Solution

ArrayGreedySorting

LeetCode ↗74% acc.

EasyLongest Common Prefix✓ Our Solution

StringTrie

LeetCode ↗45% acc.

MediumGet Equal Substrings Within Budget✓ Our Solution

StringBinary SearchSliding WindowPrefix Sum

LeetCode ↗59% acc.

EasyCount Binary Substrings✓ Our Solution

Two PointersString

LeetCode ↗66% acc.

EasyValid Parentheses✓ Our Solution

StringStack

LeetCode ↗42% acc.

MediumMinimum Suffix Flips✓ Our Solution

StringGreedy

LeetCode ↗73% acc.

MediumLetter Combinations of a Phone Number✓ Our Solution

Hash TableStringBacktracking

LeetCode ↗64% acc.

MediumMaximum Sum of Distinct Subarrays With Length K✓ Our Solution

ArrayHash TableSliding Window

LeetCode ↗43% acc.

HardNumbers With Repeated Digits✓ Our Solution

MathDynamic Programming

LeetCode ↗43% acc.

MediumLongest Palindromic Substring✓ Our Solution

Two PointersStringDynamic Programming

LeetCode ↗36% acc.

MediumLexicographically Smallest String After Substring Operation✓ Our Solution

StringGreedy

LeetCode ↗32% acc.

EasyMerge Sorted Array✓ Our Solution

ArrayTwo PointersSorting

LeetCode ↗53% acc.

MediumLongest Consecutive Sequence✓ Our Solution

ArrayHash TableUnion Find

LeetCode ↗47% acc.

EasyCount Pairs Of Similar Strings✓ Our Solution

ArrayHash TableStringBit Manipulation+1

LeetCode ↗72% acc.

MediumMaximum Subarray✓ Our Solution

ArrayDivide and ConquerDynamic Programming

LeetCode ↗52% acc.

MediumShortest and Lexicographically Smallest Beautiful String✓ Our Solution

StringSliding Window

LeetCode ↗40% acc.

MediumSpiral Matrix✓ Our Solution

ArrayMatrixSimulation

LeetCode ↗54% acc.

MediumNumber of Divisible Substrings

Hash TableStringCountingPrefix Sum

LeetCode ↗73% acc.

MediumValidate Binary Search Tree✓ Our Solution

TreeDepth-First SearchBinary Search TreeBinary Tree

LeetCode ↗34% acc.

MediumSmallest Missing Non-negative Integer After Operations✓ Our Solution

ArrayHash TableMathGreedy

LeetCode ↗40% acc.

MediumSubarray Product Less Than K✓ Our Solution

ArrayBinary SearchSliding WindowPrefix Sum

LeetCode ↗53% acc.

EasyClimbing Stairs✓ Our Solution

MathDynamic ProgrammingMemoization

LeetCode ↗54% acc.

MediumDivide Players Into Teams of Equal Skill✓ Our Solution

ArrayHash TableTwo PointersSorting

LeetCode ↗69% acc.

MediumMinimum Swaps to Group All 1's Together II✓ Our Solution

ArraySliding Window

LeetCode ↗66% acc.

MediumGroup Anagrams✓ Our Solution

ArrayHash TableStringSorting

LeetCode ↗71% acc.

MediumFind Minimum in Rotated Sorted Array✓ Our Solution

ArrayBinary Search

LeetCode ↗53% acc.

HardMedian of Two Sorted Arrays✓ Our Solution

ArrayBinary SearchDivide and Conquer

LeetCode ↗44% acc.

MediumSubsets✓ Our Solution

ArrayBacktrackingBit Manipulation

LeetCode ↗81% acc.

EasyFind the Index of the First Occurrence in a String✓ Our Solution

Two PointersStringString Matching

LeetCode ↗45% acc.

MediumSubarray Sum Equals K✓ Our Solution

ArrayHash TablePrefix Sum

LeetCode ↗45% acc.

MediumNumber of Operations to Make Network Connected✓ Our Solution

Depth-First SearchBreadth-First SearchUnion FindGraph

LeetCode ↗65% acc.

EasyPalindrome Number✓ Our Solution

Math

LeetCode ↗59% acc.

MediumNext Permutation✓ Our Solution

ArrayTwo Pointers

LeetCode ↗43% acc.

EasyBackspace String Compare✓ Our Solution

Two PointersStringStackSimulation

LeetCode ↗49% acc.

HardTrapping Rain Water✓ Our Solution

ArrayTwo PointersDynamic ProgrammingStack+1

LeetCode ↗65% acc.

EasyOdd String Difference✓ Our Solution

ArrayHash TableString

LeetCode ↗61% acc.

MediumSingle-Threaded CPU✓ Our Solution

ArraySortingHeap (Priority Queue)

LeetCode ↗46% acc.

MediumRotate Array✓ Our Solution

ArrayMathTwo Pointers

LeetCode ↗43% acc.

MediumProduct of Array Except Self✓ Our Solution

ArrayPrefix Sum

LeetCode ↗68% acc.

MediumLongest Increasing Subsequence✓ Our Solution

ArrayBinary SearchDynamic Programming

LeetCode ↗58% acc.

EasyFlipping an Image✓ Our Solution

ArrayTwo PointersBit ManipulationMatrix+1

LeetCode ↗83% acc.

MediumFlip String to Monotone Increasing✓ Our Solution

StringDynamic Programming

LeetCode ↗62% acc.

MediumFind The Original Array of Prefix Xor✓ Our Solution

ArrayBit Manipulation

LeetCode ↗88% acc.

EasyIntersection of Two Arrays✓ Our Solution

ArrayHash TableTwo PointersBinary Search+1

LeetCode ↗76% acc.

HardN-Queens✓ Our Solution

ArrayBacktracking

LeetCode ↗73% acc.

HardFind All Possible Stable Binary Arrays II✓ Our Solution

Dynamic ProgrammingPrefix Sum

LeetCode ↗26% acc.

MediumRemoving Stars From a String✓ Our Solution

StringStackSimulation

LeetCode ↗78% acc.

MediumMinimum Number of Flips to Make the Binary String Alternating✓ Our Solution

StringDynamic ProgrammingSliding Window

LeetCode ↗41% acc.

MediumRearrange Array to Maximize Prefix Score✓ Our Solution

ArrayGreedySortingPrefix Sum

LeetCode ↗42% acc.

MediumRange Product Queries of Powers✓ Our Solution

ArrayBit ManipulationPrefix Sum

LeetCode ↗42% acc.

EasyHappy Number✓ Our Solution

Hash TableMathTwo Pointers

LeetCode ↗58% acc.

EasyDegree of an Array✓ Our Solution

ArrayHash Table

LeetCode ↗57% acc.

MediumGenerate Parentheses✓ Our Solution

StringDynamic ProgrammingBacktracking

LeetCode ↗77% acc.

MediumLRU Cache✓ Our Solution

Hash TableLinked ListDesignDoubly-Linked List

LeetCode ↗45% acc.

EasyMajority Element✓ Our Solution

ArrayHash TableDivide and ConquerSorting+1

LeetCode ↗66% acc.

MediumFind the Duplicate Number✓ Our Solution

ArrayTwo PointersBinary SearchBit Manipulation

LeetCode ↗63% acc.

MediumIncreasing Triplet Subsequence✓ Our Solution

ArrayGreedy

LeetCode ↗39% acc.

MediumFind Longest Calls

Database

LeetCode ↗63% acc.

MediumPartition Equal Subset Sum✓ Our Solution

ArrayDynamic Programming

LeetCode ↗48% acc.

Medium132 Pattern✓ Our Solution

ArrayBinary SearchStackMonotonic Stack+1

LeetCode ↗34% acc.

EasyThe Employee That Worked on the Longest Task✓ Our Solution

Array

LeetCode ↗51% acc.

MediumCount Number of Teams✓ Our Solution

ArrayDynamic ProgrammingBinary Indexed TreeSegment Tree

LeetCode ↗70% acc.

MediumLeast Number of Unique Integers after K Removals✓ Our Solution

ArrayHash TableGreedySorting+1

LeetCode ↗63% acc.

MediumTask Scheduler✓ Our Solution

ArrayHash TableGreedySorting+2

LeetCode ↗62% acc.

MediumMinimum Operations to Reduce an Integer to 0✓ Our Solution

Dynamic ProgrammingGreedyBit Manipulation

LeetCode ↗57% acc.

EasyPrime In Diagonal✓ Our Solution

ArrayMathMatrixNumber Theory

LeetCode ↗36% acc.

MediumWord Break✓ Our Solution

ArrayHash TableStringDynamic Programming+2

LeetCode ↗48% acc.

100

HardMaximum Number of Tasks You Can Assign✓ Our Solution

ArrayTwo PointersBinary SearchGreedy+3

LeetCode ↗51% acc.