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
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
2603. Collect Coins in a Tree	Hard	39.6%	Array Graph+2	Read
2604. Minimum Time to Eat All Grains	Hard	40.8%	Array Binary Search+2	Read
2605. Form Smallest Number From Two Digit Arrays	Easy	55.1%	Array Enumeration+1	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
2608. Shortest Cycle in a Graph	Hard	40.5%	Breadth-First Search Graph	Read
2609. Find the Longest Balanced Substring of a Binary String	Easy	46.6%	String	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
2612. Minimum Reverse Operations	Hard	16.9%	Array Breadth-First Search+1	Read
2613. Beautiful Pairs	Hard	46.9%	Array Divide and Conquer+4	Read
2614. Prime In Diagonal	Easy	39.0%	Array Math+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
2617. Minimum Number of Visited Cells in a Grid	Hard	24.1%	Array Breadth-First Search+6	Read
2618. Check if Object Instance of Class	Medium	27.7%		Read
2619. Array Prototype Last	Easy	74.0%		Read
2620. Counter	Easy	81.6%		Read
2621. Sleep	Easy	87.3%		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
2626. Array Reduce Transformation	Easy	85.1%		Read
2627. Debounce	Medium	91.3%		Read
2628. JSON Deep Equal	Medium	38.8%		Read
2629. Function Composition	Easy	86.7%		Read
2630. Memoize II	Hard	31.5%		Read
2631. Group By	Medium	81.0%		Read
2632. Curry	Medium	89.2%		Read
2633. Convert Object to JSON String	Medium	77.4%		Read
2634. Filter Elements from Array	Easy	85.1%		Read
2635. Apply Transform Over Each Element in Array	Easy	86.0%		Read
2636. Promise Pool	Medium	79.8%		Read
2637. Promise Time Limit	Medium	82.0%		Read
2638. Count the Number of K-Free Subsets	Medium	47.4%	Array Combinatorics+3	Read
2639. Find the Width of Columns of a Grid	Easy	71.0%	Array Matrix	Read
2640. Find the Score of All Prefixes of an Array	Medium	72.9%	Array Prefix Sum	Read
2641. Cousins in Binary Tree II	Medium	75.8%	Binary Tree Breadth-First Search+3	Read
2642. Design Graph With Shortest Path Calculator	Hard	65.6%	Design Graph+2	Read
2643. Row With Maximum Ones	Easy	74.2%	Array Matrix	Read
2644. Find the Maximum Divisibility Score	Easy	52.3%	Array	Read
2645. Minimum Additions to Make Valid String	Medium	51.0%	Dynamic Programming Greedy+2	Read
2646. Minimize the Total Price of the Trips	Hard	48.5%	Array Depth-First Search+3	Read
2647. Color the Triangle Red	Hard	58.0%	Array Math	Read
2648. Generate Fibonacci Sequence	Easy	83.6%		Read
2649. Nested Array Generator	Medium	79.3%		Read
2650. Design Cancellable Function	Hard	49.6%		Read

#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%

#2603Hard

Collect Coins in a Tree

ArrayGraphTopological Sort+1

Acceptance: 39.6%

#2604Hard

Minimum Time to Eat All Grains

ArrayBinary SearchSorting+1

Acceptance: 40.8%

#2605Easy

Form Smallest Number From Two Digit Arrays

ArrayEnumerationHash Table

Acceptance: 55.1%

#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%

#2608Hard

Shortest Cycle in a Graph

Breadth-First SearchGraph

Acceptance: 40.5%

#2609Easy

Find the Longest Balanced Substring of a Binary String

String

Acceptance: 46.6%

#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%

#2612Hard

Minimum Reverse Operations

ArrayBreadth-First SearchOrdered Set

Acceptance: 16.9%

#2613Hard

Beautiful Pairs

ArrayDivide and ConquerGeometry+3

Acceptance: 46.9%

#2614Easy

Prime In Diagonal

ArrayMathMatrix+1

Acceptance: 39.0%

#2615Medium

Sum of Distances

ArrayHash TablePrefix Sum

Acceptance: 50.2%

#2616Medium

Minimize the Maximum Difference of Pairs

ArrayBinary SearchGreedy

Acceptance: 50.9%

#2617Hard

Minimum Number of Visited Cells in a Grid

ArrayBreadth-First SearchDynamic Programming+5

Acceptance: 24.1%

#2618Medium

Check if Object Instance of Class

Acceptance: 27.7%

#2619Easy

Array Prototype Last

Acceptance: 74.0%

#2620Easy

Counter

Acceptance: 81.6%

#2621Easy

Sleep

Acceptance: 87.3%

#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%

#2626Easy

Array Reduce Transformation

Acceptance: 85.1%

#2627Medium

Debounce

Acceptance: 91.3%

#2628Medium

JSON Deep Equal

Acceptance: 38.8%

#2629Easy

Function Composition

Acceptance: 86.7%

#2630Hard

Memoize II

Acceptance: 31.5%

#2631Medium

Group By

Acceptance: 81.0%

#2632Medium

Curry

Acceptance: 89.2%

#2633Medium

Convert Object to JSON String

Acceptance: 77.4%

#2634Easy

Filter Elements from Array

Acceptance: 85.1%

#2635Easy

Apply Transform Over Each Element in Array

Acceptance: 86.0%

#2636Medium

Promise Pool

Acceptance: 79.8%

#2637Medium

Promise Time Limit

Acceptance: 82.0%

#2638Medium

Count the Number of K-Free Subsets

ArrayCombinatoricsDynamic Programming+2

Acceptance: 47.4%

#2639Easy

Find the Width of Columns of a Grid

ArrayMatrix

Acceptance: 71.0%

#2640Medium

Find the Score of All Prefixes of an Array

ArrayPrefix Sum

Acceptance: 72.9%

#2641Medium

Cousins in Binary Tree II

Binary TreeBreadth-First SearchDepth-First Search+2

Acceptance: 75.8%

#2642Hard

Design Graph With Shortest Path Calculator

DesignGraphHeap (Priority Queue)+1

Acceptance: 65.6%

#2643Easy

Row With Maximum Ones

ArrayMatrix

Acceptance: 74.2%

#2644Easy

Find the Maximum Divisibility Score

Array

Acceptance: 52.3%

#2645Medium

Minimum Additions to Make Valid String

Dynamic ProgrammingGreedyStack+1

Acceptance: 51.0%

#2646Hard

Minimize the Total Price of the Trips

ArrayDepth-First SearchDynamic Programming+2

Acceptance: 48.5%

#2647Hard

Color the Triangle Red

ArrayMath

Acceptance: 58.0%

#2648Easy

Generate Fibonacci Sequence

Acceptance: 83.6%

#2649Medium

Nested Array Generator

Acceptance: 79.3%

#2650Hard

Design Cancellable Function

Acceptance: 49.6%

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