Solutions & Explanations

Browse 4,030+ detailed solutions with multiple approaches, code in Python, Java, C++ and more.

4,030 Solutions961 Easy2102 Medium967 Hard

Title	Difficulty	Acceptance	Topics	Solution
2533. Number of Good Binary Strings	Medium	52.8%	Dynamic Programming	Read
2536. Increment Submatrices by One	Medium	73.8%	Array Matrix+1	Read
2537. Count the Number of Good Subarrays	Medium	65.9%	Array Hash Table+1	Read
2539. Count the Number of Good Subsequences	Medium	47.7%	Combinatorics Counting+3	Read
2541. Minimum Operations to Make Array Equal II	Medium	33.1%	Array Greedy+1	Read
2542. Maximum Subsequence Score	Medium	54.6%	Array Greedy+2	Read
2545. Sort the Students by Their Kth Score	Medium	86.1%	Array Matrix+1	Read
2546. Apply Bitwise Operations to Make Strings Equal	Medium	42.6%	Bit Manipulation String	Read
2548. Maximum Price to Fill a Bag	Medium	64.6%	Array Greedy+1	Read
2550. Count Collisions of Monkeys on a Polygon	Medium	30.0%	Math Recursion	Read
2554. Maximum Number of Integers to Choose From a Range I	Medium	68.0%	Array Binary Search+3	Read
2555. Maximize Win From Two Segments	Medium	38.2%	Array Binary Search+1	Read
2556. Disconnect Path in a Binary Matrix by at Most One Flip	Medium	27.8%	Array Breadth-First Search+3	Read
2557. Maximum Number of Integers to Choose From a Range II	Medium	34.9%	Array Binary Search+2	Read
2559. Count Vowel Strings in Ranges	Medium	67.8%	Array Prefix Sum+1	Read
2560. House Robber IV	Medium	64.8%	Array Binary Search	Read
2563. Count the Number of Fair Pairs	Medium	52.7%	Array Binary Search+2	Read
2564. Substring XOR Queries	Medium	36.1%	Array Bit Manipulation+2	Read
2567. Minimum Score by Changing Two Elements	Medium	49.8%	Array Greedy+1	Read
2568. Minimum Impossible OR	Medium	59.5%	Array Bit Manipulation+1	Read
2571. Minimum Operations to Reduce an Integer to 0	Medium	62.9%	Bit Manipulation Dynamic Programming+1	Read
2572. Count the Number of Square-Free Subsets	Medium	26.5%	Array Bit Manipulation+3	Read
2575. Find the Divisibility Array of a String	Medium	36.5%	Array Math+1	Read
2576. Find the Maximum Number of Marked Indices	Medium	41.7%	Array Binary Search+3	Read
2579. Count Total Number of Colored Cells	Medium	66.1%	Math	Read
2580. Count Ways to Group Overlapping Ranges	Medium	39.1%	Array Sorting	Read
2583. Kth Largest Sum in a Binary Tree	Medium	59.4%	Binary Tree Breadth-First Search+2	Read
2587. Rearrange Array to Maximize Prefix Score	Medium	43.2%	Array Greedy+2	Read
2588. Count the Number of Beautiful Subarrays	Medium	54.7%	Array Bit Manipulation+2	Read
2590. Design a Todo List	Medium	59.8%	Array Design+3	Read
2592. Maximize Greatness of an Array	Medium	62.0%	Array Greedy+2	Read
2593. Find Score of an Array After Marking All Elements	Medium	64.5%	Array Hash Table+3	Read
2594. Minimum Time to Repair Cars	Medium	59.6%	Array Binary Search	Read
2596. Check Knight Tour Configuration	Medium	62.0%	Array Breadth-First Search+3	Read
2597. The Number of Beautiful Subsets	Medium	50.9%	Array Backtracking+5	Read
2598. Smallest Missing Non-negative Integer After Operations	Medium	56.0%	Array Greedy+2	Read
2599. Make the Prefix Sum Non-negative	Medium	51.9%	Array Greedy+1	Read
2601. Prime Subtraction Operation	Medium	55.9%	Array Binary Search+3	Read
2602. Minimum Operations to Make All Array Elements Equal	Medium	38.7%	Array Binary Search+2	Read
2606. Find the Substring With Maximum Cost	Medium	58.5%	Array Dynamic Programming+2	Read
2607. Make K-Subarray Sums Equal	Medium	38.9%	Array Math+2	Read
2610. Convert an Array Into a 2D Array With Conditions	Medium	86.1%	Array Hash Table	Read
2611. Mice and Cheese	Medium	48.6%	Array Greedy+2	Read
2615. Sum of Distances	Medium	50.2%	Array Hash Table+1	Read
2616. Minimize the Maximum Difference of Pairs	Medium	50.9%	Array Binary Search+1	Read
2618. Check if Object Instance of Class	Medium	27.7%		Read
2622. Cache With Time Limit	Medium	75.1%		Read
2623. Memoize	Medium	63.0%		Read
2624. Snail Traversal	Medium	66.0%		Read
2625. Flatten Deeply Nested Array	Medium	63.7%		Read

#2533Medium

Number of Good Binary Strings

Dynamic Programming

Acceptance: 52.8%

#2536Medium

Increment Submatrices by One

ArrayMatrixPrefix Sum

Acceptance: 73.8%

#2537Medium

Count the Number of Good Subarrays

ArrayHash TableSliding Window

Acceptance: 65.9%

#2539Medium

Count the Number of Good Subsequences

CombinatoricsCountingHash Table+2

Acceptance: 47.7%

#2541Medium

Minimum Operations to Make Array Equal II

ArrayGreedyMath

Acceptance: 33.1%

#2542Medium

Maximum Subsequence Score

ArrayGreedyHeap (Priority Queue)+1

Acceptance: 54.6%

#2545Medium

Sort the Students by Their Kth Score

ArrayMatrixSorting

Acceptance: 86.1%

#2546Medium

Apply Bitwise Operations to Make Strings Equal

Bit ManipulationString

Acceptance: 42.6%

#2548Medium

Maximum Price to Fill a Bag

ArrayGreedySorting

Acceptance: 64.6%

#2550Medium

Count Collisions of Monkeys on a Polygon

MathRecursion

Acceptance: 30.0%

#2554Medium

Maximum Number of Integers to Choose From a Range I

ArrayBinary SearchGreedy+2

Acceptance: 68.0%

#2555Medium

Maximize Win From Two Segments

ArrayBinary SearchSliding Window

Acceptance: 38.2%

#2556Medium

Disconnect Path in a Binary Matrix by at Most One Flip

ArrayBreadth-First SearchDepth-First Search+2

Acceptance: 27.8%

#2557Medium

Maximum Number of Integers to Choose From a Range II

ArrayBinary SearchGreedy+1

Acceptance: 34.9%

#2559Medium

Count Vowel Strings in Ranges

ArrayPrefix SumString

Acceptance: 67.8%

#2560Medium

House Robber IV

ArrayBinary Search

Acceptance: 64.8%

#2563Medium

Count the Number of Fair Pairs

ArrayBinary SearchSorting+1

Acceptance: 52.7%

#2564Medium

Substring XOR Queries

ArrayBit ManipulationHash Table+1

Acceptance: 36.1%

#2567Medium

Minimum Score by Changing Two Elements

ArrayGreedySorting

Acceptance: 49.8%

#2568Medium

Minimum Impossible OR

ArrayBit ManipulationBrainteaser

Acceptance: 59.5%

#2571Medium

Minimum Operations to Reduce an Integer to 0

Bit ManipulationDynamic ProgrammingGreedy

Acceptance: 62.9%

#2572Medium

Count the Number of Square-Free Subsets

ArrayBit ManipulationBitmask+2

Acceptance: 26.5%

#2575Medium

Find the Divisibility Array of a String

ArrayMathString

Acceptance: 36.5%

#2576Medium

Find the Maximum Number of Marked Indices

ArrayBinary SearchGreedy+2

Acceptance: 41.7%

#2579Medium

Count Total Number of Colored Cells

Math

Acceptance: 66.1%

#2580Medium

Count Ways to Group Overlapping Ranges

ArraySorting

Acceptance: 39.1%

#2583Medium

Kth Largest Sum in a Binary Tree

Binary TreeBreadth-First SearchSorting+1

Acceptance: 59.4%

#2587Medium

Rearrange Array to Maximize Prefix Score

ArrayGreedyPrefix Sum+1

Acceptance: 43.2%

#2588Medium

Count the Number of Beautiful Subarrays

ArrayBit ManipulationHash Table+1

Acceptance: 54.7%

#2590Medium

Design a Todo List

ArrayDesignHash Table+2

Acceptance: 59.8%

#2592Medium

Maximize Greatness of an Array

ArrayGreedySorting+1

Acceptance: 62.0%

#2593Medium

Find Score of an Array After Marking All Elements

ArrayHash TableHeap (Priority Queue)+2

Acceptance: 64.5%

#2594Medium

Minimum Time to Repair Cars

ArrayBinary Search

Acceptance: 59.6%

#2596Medium

Check Knight Tour Configuration

ArrayBreadth-First SearchDepth-First Search+2

Acceptance: 62.0%

#2597Medium

The Number of Beautiful Subsets

ArrayBacktrackingCombinatorics+4

Acceptance: 50.9%

#2598Medium

Smallest Missing Non-negative Integer After Operations

ArrayGreedyHash Table+1

Acceptance: 56.0%

#2599Medium

Make the Prefix Sum Non-negative

ArrayGreedyHeap (Priority Queue)

Acceptance: 51.9%

#2601Medium

Prime Subtraction Operation

ArrayBinary SearchGreedy+2

Acceptance: 55.9%

#2602Medium

Minimum Operations to Make All Array Elements Equal

ArrayBinary SearchPrefix Sum+1

Acceptance: 38.7%

#2606Medium

Find the Substring With Maximum Cost

ArrayDynamic ProgrammingHash Table+1

Acceptance: 58.5%

#2607Medium

Make K-Subarray Sums Equal

ArrayMathNumber Theory+1

Acceptance: 38.9%

#2610Medium

Convert an Array Into a 2D Array With Conditions

ArrayHash Table

Acceptance: 86.1%

#2611Medium

Mice and Cheese

ArrayGreedyHeap (Priority Queue)+1

Acceptance: 48.6%

#2615Medium

Sum of Distances

ArrayHash TablePrefix Sum

Acceptance: 50.2%

#2616Medium

Minimize the Maximum Difference of Pairs

ArrayBinary SearchGreedy

Acceptance: 50.9%

#2618Medium

Check if Object Instance of Class

Acceptance: 27.7%

#2622Medium

Cache With Time Limit

Acceptance: 75.1%

#2623Medium

Memoize

Acceptance: 63.0%

#2624Medium

Snail Traversal

Acceptance: 66.0%

#2625Medium

Flatten Deeply Nested Array

Acceptance: 63.7%

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Master DSA with Step-by-Step Solutions

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