TypeScript
hard
Interfaces
Interfaces for managing a complex order system
Develop a system of types and interfaces in TypeScript for processing orders in an online store with support for various…
✅ 0 solved
📅 2026-05-11
Java
easy
Interfaces
Interface for calculating the area of a figure
Create a Shape interface with a method double getArea(). Implement it in the Circle (radius) and Rectangle (width and he…
✅ 0 solved
📅 2026-05-11
JavaScript
medium
Closures
Counter with step and reset via closure
Implement the createCounter function, which takes an initial value start and a step step. The function should return an …
✅ 0 solved
📅 2026-05-11
C++
easy
Classes
Here is the translation of the programming task text from Russian to English:
Class Book with a method for displaying information
Create a class `Book` with fields `title` (book title), `author` (author), and `year` (year of publication). Implement a…
✅ 0 solved
📅 2026-05-11
Go
easy
Functions
Function for checking a prime number
Write a function isPrime(n int) bool that determines whether the given integer n is prime. A prime number is a natural n…
✅ 0 solved
📅 2026-05-11
Rust
hard
Functions
Recursive palindrome assembly from substrings
Given a string S consisting of lowercase Latin letters. It is necessary to recursively (using a function) split the orig…
✅ 0 solved
📅 2026-05-11
Python
hard
Loops
Search for a cycle in a permutation with the maximum sum
Given a permutation of numbers from 1 to N. Consider a directed graph where each vertex i has an edge to a[i]. Find a cy…
✅ 0 solved
📅 2026-05-11
Swift
hard
Functions
Recursive analysis of a binary tree with memoization
Write a function that takes a binary tree represented as an array of integers (level-order traversal, null is denoted as…
✅ 0 solved
📅 2026-05-11
Kotlin
hard
Functions
Assembly of chains from fragments with maximum length
Given N strings consisting of lowercase Latin letters (each string length from 1 to 100). It is necessary to write a fun…
✅ 0 solved
📅 2026-05-11
PHP
medium
Math
Sum of squares of prime numbers in the interval
Write a program that finds the sum of squares of all prime numbers in a given interval [a, b] inclusive. If there are no…
✅ 0 solved
📅 2026-05-11
C#
medium
Loops
Search for the maximum length of a strictly increasing subsequence
Write a program that finds the maximum length of a strictly increasing subsequence in a sequence of integers. The sequen…
✅ 0 solved
📅 2026-05-11
Java
hard
Classes
Vehicle management system with inheritance and polymorphism
Develop a class system for managing a fleet of vehicles. Create an abstract class `Vehicle` with fields: `id` (int), `br…
✅ 0 solved
📅 2026-05-11
Go
hard
Loops
Search for the maximum sum of a subarray with a length constraint
Given an array of integers (positive and negative). It is necessary to find the maximum sum of a contiguous subarray who…
✅ 0 solved
📅 2026-05-11
JavaScript
easy
Functions
Function for checking the parity of a number
Write a function isEven that takes an integer and returns true if it is even, and false otherwise. Use the % operator. D…
✅ 0 solved
📅 2026-05-11
TypeScript
medium
Loops
Compressing a sequence using a cyclic shift
Given a sequence of integers. It is necessary to find the minimum length of a compressed string obtained by cyclically s…
✅ 0 solved
📅 2026-05-11
PHP
easy
Classes
Class for storing book data
Create a class `Book` with private properties: `title` (string), `author` (string), `year` (integer). Implement a constr…
✅ 0 solved
📅 2026-05-11
C++
hard
Pointers
Dynamic array of pointers to functions for string processing
Write a C++ program that reads an integer N, then N strings. Create a dynamic array of pointers to functions, each of wh…
✅ 0 solved
📅 2026-05-11
Rust
medium
Loops
Sum of digits in factorial
Given a natural number N. Calculate the sum of the digits of the number N! (factorial of N). Use a loop to compute the f…
✅ 0 solved
📅 2026-05-11
Swift
medium
Loops
Search for the maximum in a matrix with a condition
Given a square matrix of integers. Find the maximum element among those located above the main diagonal that are prime n…
✅ 0 solved
📅 2026-05-11
C#
easy
Strings
Counting vowels in a string
Write a program that reads a string and counts the number of vowel letters (Russian: а, е, ё, и, о, у, ы, э, ю, я) in it…
✅ 0 solved
📅 2026-05-11
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