Array Coding Practice Problems - Page 21 | TutorialsPoint

Tutorials Videos

Master DSA Topics - January, 2026

Practice problems across 75+ categories

Array

String

Hash Table

Dynamic Programming

Sorting

Greedy

Depth-First Search

See All Topics

73 Categories

Array Coding Problems

Practice problems frequently asked at Array • 1947 problems | 398 Easy | 1049 Medium | 497 Hard

#	Problem	Difficulty	Topics
301	Count the Number of Incremovable Subarrays I	Easy	ArrayTwo PointersBinary Search
302	Count the Number of Incremovable Subarrays II	Hard	ArrayTwo PointersBinary Search
303	Count the Number of Infection Sequences	Hard	ArrayMathCombinatorics
304	Count the Number of Inversions	Hard	ArrayDynamic Programming
305	Count the Number of K-Big Indices	Hard	ArrayBinary SearchDivide and Conquer
306	Count the Number of K-Free Subsets	Medium	ArrayMathDynamic Programming
307	Count the Number of Square-Free Subsets	Medium	ArrayMathDynamic Programming
308	Count the Number of Vowel Strings in Range	Easy	ArrayStringCounting
309	Count Triplets That Can Form Two Arrays of Equal XOR	Medium	ArrayHash TableMath
310	Count Triplets with Even XOR Set Bits I	Easy	ArrayBit Manipulation
311	Count Triplets with Even XOR Set Bits II	Medium	ArrayBit Manipulation
312	Count Unguarded Cells in the Grid	Medium	ArrayMatrixSimulation
313	Count Unhappy Friends	Medium	ArraySimulation
314	Count Vowel Strings in Ranges	Medium	ArrayStringPrefix Sum
315	Count Ways to Group Overlapping Ranges	Medium	ArraySorting

Showing 301-315 of 1947

1 ... 19 20 21 22 23 ... 130

Tutorials Library

Master any technology with our largest free online Library. Browse through 500+ tutorials across 10+ categories.

Programming Languages 20 Latest Technologies 12 Machine Learning 18 Computer Science 15 Web Development 25 Mobile Development 10 Databases 14

Python

Python Tutorial

Java

Java Tutorial

JavaScript

JavaScript

C++

C++ Tutorial

C# Tutorial

Go Tutorial

Rust

Rust Tutorial

TypeScript

TypeScript

Swift

Swift Tutorial

Kotlin

Kotlin Tutorial

Ruby

Ruby Tutorial

PHP

PHP Tutorial

C Tutorial

Scala

Scala Tutorial

Perl

Perl Tutorial

R Tutorial

Dart

Dart Tutorial

Lua

Lua Tutorial

MATLAB

MATLAB

Haskell

Haskell

Developer Toolbox

Powerful online tools to boost your productivity

JS Minifier

Whiteboard

Image Editor

Doc Viewer

LaTeX Editor

JSON Editor

QR Generator

Resume Builder

View All

public class MyFirstJavaProgram { Edit & Run

/* This is my first java program.

* This will print 'Hello, World!' as the output

*/

public static void main(String []args) {

System.out.println("Hello, World!"); // prints

}

}

Start Coding in Seconds

Coding Ground For Developers

Code, Edit, Run and Share

Ignite your coding potential on Coding Ground - an immersive online platform for hands-on learning, collaboration, and skill development.

Java Compiler Python Compiler C++ Compiler HTML Editor