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
2751. Robot Collisions	Hard	61.6%	Array Simulation+2	Read
2752. Customers with Maximum Number of Transactions on Consecutive Days	Hard	39.6%	Database	Read
2753. Count Houses in a Circular Street II	Hard	61.5%		Read
2754. Bind Function to Context	Medium	87.0%		Read
2755. Deep Merge of Two Objects	Medium	66.4%		Read
2756. Query Batching	Hard	63.0%		Read
2757. Generate Circular Array Values	Medium	73.3%		Read
2758. Next Day	Easy	84.2%		Read
2759. Convert JSON String to Object	Hard	61.7%		Read
2760. Longest Even Odd Subarray With Threshold	Easy	32.4%	Array Sliding Window	Read
2761. Prime Pairs With Target Sum	Medium	38.4%	Array Enumeration+2	Read
2762. Continuous Subarrays	Medium	58.0%	Array Heap (Priority Queue)+4	Read
2763. Sum of Imbalance Numbers of All Subarrays	Hard	43.8%	Array Hash Table+1	Read
2764. Is Array a Preorder of Some ‌Binary Tree	Medium	67.8%	Binary Tree Depth-First Search+2	Read
2765. Longest Alternating Subarray	Easy	35.7%	Array Enumeration	Read
2766. Relocate Marbles	Medium	51.9%	Array Hash Table+2	Read
2767. Partition String Into Minimum Beautiful Substrings	Medium	54.0%	Backtracking Dynamic Programming+2	Read
2768. Number of Black Blocks	Medium	42.2%	Array Enumeration+1	Read
2769. Find the Maximum Achievable Number	Easy	91.3%	Math	Read
2770. Maximum Number of Jumps to Reach the Last Index	Medium	51.2%	Array Dynamic Programming	Read
2771. Longest Non-decreasing Subarray From Two Arrays	Medium	31.1%	Array Dynamic Programming	Read
2772. Apply Operations to Make All Array Elements Equal to Zero	Medium	33.5%	Array Prefix Sum	Read
2773. Height of Special Binary Tree	Medium	74.6%	Binary Tree Breadth-First Search+2	Read
2774. Array Upper Bound	Easy	82.0%		Read
2775. Undefined to Null	Medium	69.6%		Read
2776. Convert Callback Based Function to Promise Based Function	Medium	92.1%		Read
2777. Date Range Generator	Medium	80.4%		Read
2778. Sum of Squares of Special Elements	Easy	82.0%	Array Enumeration	Read
2779. Maximum Beauty of an Array After Applying Operation	Medium	58.4%	Array Binary Search+2	Read
2780. Minimum Index of a Valid Split	Medium	75.5%	Array Hash Table+1	Read
2781. Length of the Longest Valid Substring	Hard	38.3%	Array Hash Table+2	Read
2782. Number of Unique Categories	Medium	83.8%	Counting Interactive+1	Read
2783. Flight Occupancy and Waitlist Analysis	Medium	38.0%	Database	Read
2784. Check if Array is Good	Easy	57.3%	Array Hash Table+1	Read
2785. Sort Vowels in a String	Medium	83.4%	Sorting String	Read
2786. Visit Array Positions to Maximize Score	Medium	37.5%	Array Dynamic Programming	Read
2787. Ways to Express an Integer as Sum of Powers	Medium	49.8%	Dynamic Programming	Read
2788. Split Strings by Separator	Easy	76.1%	Array String	Read
2789. Largest Element in an Array after Merge Operations	Medium	48.3%	Array Greedy	Read
2790. Maximum Number of Groups With Increasing Length	Hard	23.0%	Array Binary Search+3	Read
2791. Count Paths That Can Form a Palindrome in a Tree	Hard	52.0%	Bit Manipulation Bitmask+3	Read
2792. Count Nodes That Are Great Enough	Hard	56.5%	Binary Tree Depth-First Search+2	Read
2793. Status of Flight Tickets	Hard	76.1%		Read
2794. Create Object from Two Arrays	Easy	64.3%		Read
2795. Parallel Execution of Promises for Individual Results Retrieval	Medium	88.7%		Read
2796. Repeat String	Easy	92.9%		Read
2797. Partial Function with Placeholders	Easy	89.0%		Read
2798. Number of Employees Who Met the Target	Easy	87.7%	Array	Read
2799. Count Complete Subarrays in an Array	Medium	75.9%	Array Hash Table+1	Read
2800. Shortest String That Contains Three Strings	Medium	32.2%	Enumeration Greedy+1	Read

#2751Hard

Robot Collisions

ArraySimulationSorting+1

Acceptance: 61.6%

#2752Hard

Customers with Maximum Number of Transactions on Consecutive Days

Database

Acceptance: 39.6%

#2753Hard

Count Houses in a Circular Street II

Acceptance: 61.5%

#2754Medium

Bind Function to Context

Acceptance: 87.0%

#2755Medium

Deep Merge of Two Objects

Acceptance: 66.4%

#2756Hard

Query Batching

Acceptance: 63.0%

#2757Medium

Generate Circular Array Values

Acceptance: 73.3%

#2758Easy

Next Day

Acceptance: 84.2%

#2759Hard

Convert JSON String to Object

Acceptance: 61.7%

#2760Easy

Longest Even Odd Subarray With Threshold

ArraySliding Window

Acceptance: 32.4%

#2761Medium

Prime Pairs With Target Sum

ArrayEnumerationMath+1

Acceptance: 38.4%

#2762Medium

Continuous Subarrays

ArrayHeap (Priority Queue)Monotonic Queue+3

Acceptance: 58.0%

#2763Hard

Sum of Imbalance Numbers of All Subarrays

ArrayHash TableOrdered Set

Acceptance: 43.8%

#2764Medium

Is Array a Preorder of Some ‌Binary Tree

Binary TreeDepth-First SearchStack+1

Acceptance: 67.8%

#2765Easy

Longest Alternating Subarray

ArrayEnumeration

Acceptance: 35.7%

#2766Medium

Relocate Marbles

ArrayHash TableSimulation+1

Acceptance: 51.9%

#2767Medium

Partition String Into Minimum Beautiful Substrings

BacktrackingDynamic ProgrammingHash Table+1

Acceptance: 54.0%

#2768Medium

Number of Black Blocks

ArrayEnumerationHash Table

Acceptance: 42.2%

#2769Easy

Find the Maximum Achievable Number

Math

Acceptance: 91.3%

#2770Medium

Maximum Number of Jumps to Reach the Last Index

ArrayDynamic Programming

Acceptance: 51.2%

#2771Medium

Longest Non-decreasing Subarray From Two Arrays

ArrayDynamic Programming

Acceptance: 31.1%

#2772Medium

Apply Operations to Make All Array Elements Equal to Zero

ArrayPrefix Sum

Acceptance: 33.5%

#2773Medium

Height of Special Binary Tree

Binary TreeBreadth-First SearchDepth-First Search+1

Acceptance: 74.6%

#2774Easy

Array Upper Bound

Acceptance: 82.0%

#2775Medium

Undefined to Null

Acceptance: 69.6%

#2776Medium

Convert Callback Based Function to Promise Based Function

Acceptance: 92.1%

#2777Medium

Date Range Generator

Acceptance: 80.4%

#2778Easy

Sum of Squares of Special Elements

ArrayEnumeration

Acceptance: 82.0%

#2779Medium

Maximum Beauty of an Array After Applying Operation

ArrayBinary SearchSliding Window+1

Acceptance: 58.4%

#2780Medium

Minimum Index of a Valid Split

ArrayHash TableSorting

Acceptance: 75.5%

#2781Hard

Length of the Longest Valid Substring

ArrayHash TableSliding Window+1

Acceptance: 38.3%

#2782Medium

Number of Unique Categories

CountingInteractiveUnion Find

Acceptance: 83.8%

#2783Medium

Flight Occupancy and Waitlist Analysis

Database

Acceptance: 38.0%

#2784Easy

Check if Array is Good

ArrayHash TableSorting

Acceptance: 57.3%

#2785Medium

Sort Vowels in a String

SortingString

Acceptance: 83.4%

#2786Medium

Visit Array Positions to Maximize Score

ArrayDynamic Programming

Acceptance: 37.5%

#2787Medium

Ways to Express an Integer as Sum of Powers

Dynamic Programming

Acceptance: 49.8%

#2788Easy

Split Strings by Separator

ArrayString

Acceptance: 76.1%

#2789Medium

Largest Element in an Array after Merge Operations

ArrayGreedy

Acceptance: 48.3%

#2790Hard

Maximum Number of Groups With Increasing Length

ArrayBinary SearchGreedy+2

Acceptance: 23.0%

#2791Hard

Count Paths That Can Form a Palindrome in a Tree

Bit ManipulationBitmaskDepth-First Search+2

Acceptance: 52.0%

#2792Hard

Count Nodes That Are Great Enough

Binary TreeDepth-First SearchDivide and Conquer+1

Acceptance: 56.5%

#2793Hard

Status of Flight Tickets

Acceptance: 76.1%

#2794Easy

Create Object from Two Arrays

Acceptance: 64.3%

#2795Medium

Parallel Execution of Promises for Individual Results Retrieval

Acceptance: 88.7%

#2796Easy

Repeat String

Acceptance: 92.9%

#2797Easy

Partial Function with Placeholders

Acceptance: 89.0%

#2798Easy

Number of Employees Who Met the Target

Array

Acceptance: 87.7%

#2799Medium

Count Complete Subarrays in an Array

ArrayHash TableSliding Window

Acceptance: 75.9%

#2800Medium

Shortest String That Contains Three Strings

EnumerationGreedyString

Acceptance: 32.2%

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