Rust
medium
Vectors
Intersection of intervals in vectors
Given two vectors containing non-overlapping and ascending sorted intervals. Each interval is represented by a pair of i…
✅ 0 solved
📅 2026-05-11
TypeScript
hard
Strings
The longest substring without repeating characters, case-sensitive and including digits
Given a string consisting of Latin letters (uppercase and lowercase) and digits. It is necessary to find the length of t…
✅ 0 solved
📅 2026-05-11
Python
hard
Lists
Analysis of permutations considering inversions and gaps
Given a permutation of numbers from 1 to n. It is required to determine whether it is "almost identity": the number of i…
✅ 0 solved
📅 2026-05-11
C++
hard
Strings
Intersection of minimal cyclic shifts
Given two strings s and t, consisting of lowercase Latin letters. It is necessary to find the length of the longest comm…
✅ 0 solved
📅 2026-05-11
PHP
easy
Loops
Sum of squares of even numbers from 1 to N
Write a program that takes a positive integer N and calculates the sum of squares of all even numbers from 1 to N inclus…
✅ 0 solved
📅 2026-05-11
C#
medium
Arrays
Search for the maximum sum of a subarray with permutations
Given an array of integers. You are allowed to perform at most one operation: choose two elements of the array and swap …
✅ 0 solved
📅 2026-05-11
JavaScript
hard
Strings
Here is the translation of the programming task text from Russian to English:
String compression with recovery using the rule of repeating segments
Given a string consisting of Latin letters and digits. The string represents a compressed format: each digit indicates h…
✅ 0 solved
📅 2026-05-11
Kotlin
medium
Lists
Grouping even and odd indices of a list
Write a program that takes a list of integers, splits it into two sublists: elements with even indices (0, 2, 4...) and …
✅ 0 solved
📅 2026-05-11
Java
hard
Strings
Minimum distance between repeating substrings
Given a string S consisting of lowercase Latin letters. It is necessary to find the minimum distance between the startin…
✅ 0 solved
📅 2026-05-11
PHP
hard
Strings
Search for substrings with palindromic shift
Given a string S consisting of lowercase Latin letters. It is necessary to find all unique substrings of length K that b…
✅ 0 solved
📅 2026-05-11
TypeScript
medium
Arrays
Search for a pair with a given sum in a sorted array
Given a sorted array of integers in ascending order and a target sum, it is necessary to find two distinct elements of t…
✅ 0 solved
📅 2026-05-11
Swift
medium
Arrays
Removing duplicates from a sorted array
Given a non-decreasing sorted array of integers, you need to remove all duplicates so that each element appears at most …
✅ 0 solved
📅 2026-05-11
Python
medium
Strings
Search for the longest substring without repeating characters
Given a string `s` consisting of lowercase Latin letters. Find the length of the longest substring in which all characte…
✅ 0 solved
📅 2026-05-11
Go
medium
Slices
Merge two sorted slices with duplicate removal
Given two slices of integers sorted in ascending order. Merge them into one sorted slice, removing all duplicates. Imple…
✅ 0 solved
📅 2026-05-11
C++
medium
Arrays
Remove duplicates from a sorted array with a limit on the number of repetitions
Given a non-decreasing sorted integer array. It is necessary to remove duplicates so that each element appears at most t…
✅ 0 solved
📅 2026-05-11
Rust
easy
Iterators
Sum of squares of even numbers
Write a Rust program that reads a sequence of integers separated by spaces and uses iterators to find the sum of squares…
✅ 0 solved
📅 2026-05-11
C#
easy
Async
Asynchronous calculation of the sum of squares
Write an asynchronous program in C# that reads an integer N, then N integers. For each number, asynchronously compute it…
✅ 0 solved
📅 2026-05-11
Swift
easy
Protocols
Protocol for geometric shapes
Create a protocol Shape with the following requirements: a property area of type Double (read-only) and a method descrip…
✅ 0 solved
📅 2026-05-11
Java
medium
Arrays
Search for a subarray with maximum sum (Kadane's algorithm)
Given an array of integers, find the subarray (continuous sequence of elements) with the maximum sum. Output this sum. I…
✅ 0 solved
📅 2026-05-11
Kotlin
easy
Lambdas
Filtering a list by string length
Write a program that reads an integer N, then reads N lines. Using a lambda expression, filter out lines whose length is…
✅ 0 solved
📅 2026-05-11
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