AlgoLounge

Questions

Problems from the SCS Hello World 2025 competition.

Tutorial

Hello World
easy

Stage 2

Sum Two Integers
easy
String Comparison
easy
Multiple Check
easy

Stage 3

Last Even Index
easy
Sum of Digits Times Seven
easy
Count Vowels
easy
Alex's Brew Coffee Shop Billing
easy
Greatest Common Divisor (GCD)
easy
Canadian Province Validator
easy
String Reversal
easy
Caffeine Calculator
easy

Medium

Palindrome Checker
easy
HW13 - Coffee Production Scheduler
medium
Alice Typing Problem
medium
Binary Representation
easy
Most Frequent Element
easy
String Matching
easy
Alphabetical Order Checker
easy
Coffee Sales Projection
medium

Hard

Coin Change
dynamic-programming
medium
Tribonacci Sequence
dynamic-programming
medium
Dice Ways
dynamic-programming
medium