About.com

About.com programming challenges
On About.com, there is a group of programming challenges. While submissions to already completed challenges are no longer accepted, they can still be performed offline to practice. Some programs are variations of prior challenges, but have slight differences.


 * 1 - 100,000th Number
 * 2 - Count the Islands
 * 3 - Manage Elevators
 * 4 - Guess the Mastermind Code
 * 5 - Squeeze words into a crossword grid
 * 6 - Guess the Mastermind Code
 * 7 - Validate Chess Positions
 * 8 - Score Poker Hands
 * 9 - Manage a Data structure
 * 10 - Hide Text
 * 11 - Match Sets of Cards
 * 12 - Calculate Shortest Path
 * 13 - Play Battleships
 * 14 - Multiply Large Numbers
 * 15 - Generate a Dungeon
 * 16 - Solve 1,000 Sliding Puzzles
 * 17 - Implement Life
 * 18 - Generate a Map
 * 19 - Fill a grid of tiles
 * 20 - Sieve of Erasthotenes
 * 21 - Data Preparation
 * 22 - Make Hexagons
 * 23 - Reassemble Numbered Tiles
 * 24 - MineSweeper Redux
 * 25 - Count the Ones
 * 26 - Text Processing
 * 27 - Pack them in!
 * 28 - An Optimization Problem
 * 30 - Zapping a Planet
 * 31 - Flipping Coins
 * 32 - Looping loops
 * 33 - Evaluate Expressions
 * 34 - Complete Lines
 * 35 - Knight's Tour
 * 36 - Fast Fibonacci Arithmetic
 * 37 - Simple Search Engine
 * 38 - Fighting Fires
 * 39 - Calculate Levenshtein Distance
 * 40 - Best Poker Hands
 * 41 - Fast Number Lists Comparison