Week 1: Arrays & Hash Tables

Contest Problems

The Phantom Array

Find the missing element in a sequence using array manipulation.

Easy Solve Now →

Binary Labyrinth

Navigate through a binary maze using efficient search techniques.

Medium Solve Now →

Cipher's Revenge

Decode encrypted messages using hash-based pattern matching.

Medium Solve Now →

The Infinite Loop

Detect and break cycles in complex data structures.

Hard Solve Now →

Resources

📖 Study Guide

Comprehensive notes on arrays, hash tables, and common patterns.

💻 Code Templates

Starter code and boilerplate for this week's problems.