Rebol3 Code Examples

1100 doorsControl flow 2100 prisonersGames 321 gameGames 424 gameGames 59 billion names of God the integerMath 6Abbreviations, automaticString 7Abbreviations, easyString 8Abbreviations, simpleString 9ABC correlationMath 10ABC problemMisc 11ABC wordsString 12Abelian sandpile model/IdentityMath 13Abundant odd numbersMath 14Additive primesMath 15Almost primeMath 16AmbControl flow 17Anagram generatorString 18AnagramsString 19Anagrams/Deranged anagramsString 20Angles (geometric), normalization and conversionMath 21Anti-primesMath 22Append numbers at same position in stringsString 23Archimedean spiralGraphics 24Arithmetic evaluationMath 25Attractive numbersMath 26Audio alarmI/O 27Audio frequency generatorI/O 28Audio overlap loopI/O 29Autogram checkerString 30Babylonian spiralGraphics 31Balanced bracketsString 32Barnsley FernGraphics 33Bifid cipherCrypto / encoding 34Bilinear interpolationGraphics 35BiorhythmsMath 36Bitcoin address validationCrypto / encoding 37Bitmap/Flood fillGraphics 38Bitmap/HistogramGraphics 39Bitmap/Midpoint circle algorithmGraphics 40Bitmap/Read a PPM fileI/O 41Bitmap/Write a PPM fileI/O 42Bitwise IOI/O 43Bitwise operationsMath 44BoidsGraphics 45Box the compassMisc 46Bulls and cowsGames 47Bulls and cows playerGames 48Burrows–Wheeler transformCrypto / encoding 49Caesar cipherCrypto / encoding 50Calendar - for "REAL" programmersMisc 51Camel case and snake caseString 52Card shufflesGames 53Catalan numbersMath 54Catalan numbers/Pascal's triangleMath 55Chinese zodiacMisc 56Color quantization (Median cut)Graphics 57Color quantization (Octree)Graphics 58Conway's Game of LifeGames 59Count the coins/0-1Math 60Create a two-dimensional array at runtimeData structures 61Create an HTML tableString 62CSV data manipulationI/O 63CSV to HTML translationI/O 64CurrencyMath 65Deal cards for FreeCellGames 66Death StarGraphics 67Digital rootMath 68Display a linear combinationMath 69Dragon curveGraphics 70Draw a clock (CLI)Graphics 71Draw a cuboidGraphics 72Draw a pixelGraphics 73Draw a sphereGraphics 74Ethiopian multiplicationMath 75Euler methodMath 76Euler's constant 0.5772...Math 77Evolutionary algorithmMisc 78Exactly three adjacent 3 in listsData structures 79Execute Brain****Misc 80Extend your languageMisc 81FASTA formatI/O 82Fibonacci sequenceMath 83Find prime n such that reversed n is also primeMath 84Find unimplemented tasksMisc 85First-class functions/Use numbers analogouslyControl flow 86Five weekendsMisc 87Fractal treeGraphics 88Fraction reductionMath 89FractranMath 90Gapful numbersMath 91Get system command outputI/O 92Go FishGames 93Gosper's hackMisc 94GreedGames 95GSTrans string conversionString 96Harriss SpiralGraphics 97Hash joinData structures 98Huffman codingCrypto / encoding 99I before E except after CString 100Image noiseGraphics 101Increment loop index within loop bodyControl flow 102Integer overflowMath 103ISBN13 check digitMath 104Jacobsthal numbersMath 105JSON pointerString 106Knapsack problem/0-1Math 107Knapsack problem/BoundedMath 108Knapsack problem/ContinuousMath 109Knapsack problem/UnboundedMath 110Knight's tourGames 111Knuth shuffleData structures 112Largest number divisible by its digitsMath 113Leap yearMisc 114Legendre prime counting functionMath 115Letter frequencyString 116Levenshtein distanceString 117Longest common suffixString 118Look-and-say sequenceMath 119Loops/With multiple rangesControl flow 120Loops/Wrong rangesControl flow 121Ludic numbersMath 122Luhn test of credit card numbersMath 123Lychrel numbersMath 124LZW compressionCrypto / encoding 125Mandelbrot setGraphics 126Mayan numeralsMisc 127Maze generationGraphics 128Minimum primesMath 129Morse codeCrypto / encoding 130MultitonMisc 131Nim gameGames 132Numbers divisible by their individual digits, but not by the product of their digitsMath 133Object serializationI/O 134Ordered wordsString 135Padovan n-step number sequencesMath 136Pairs with common factorsMath 137Palindrome detectionString 138Palindromic gapful numbersMath 139Parsing/Shunting-yard algorithmData structures 140PentagramGraphics 141Permutation testMath 142Pick random elementMisc 143PiprimesMath 144Playing cardsGames 145Poker hand analyserGames 146Polynomial regressionMath 147PolyspiralGraphics 148Pythagoras treeGraphics 149QuineMisc 150Read a configuration fileI/O 151Recaman's sequenceMath 152Reduced row echelon formMath 153Rock-paper-scissorsGames 154Rosetta Code/Rank languages by popularityMisc 155Rosetta_Code/Count_examplesMisc 156RPG attributes generatorGames 157Sattolo cycleData structures 158Self-describing numbersMath 159SemordnilapString 160SHA-256 Merkle treeCrypto / encoding 161Show ASCII tableMisc 162Show the epochMisc 163Sierpinski carpetGraphics 164Sierpinski triangleGraphics 165Sieve of EratosthenesMath 166Sieve of PritchardMath 167Sleeping Beauty problemMisc 168Soloway's recurring rainfallMath 169Sort a list of object identifiersData structures 170Sort stabilityData structures 171Sorting algorithms/Bubble sortData structures 172Sorting algorithms/Comb sortData structures 173Sorting algorithms/Counting sortData structures 174Sorting algorithms/Gnome sortData structures 175Sorting algorithms/Insertion sortData structures 176Sorting algorithms/QuicksortData structures 177Sorting algorithms/Radix sortData structures 178Sorting algorithms/Stooge sortData structures 179SoundexString 180Sparkline in unicodeString 181Spiral matrixMath 182Statistics/Normal_distributionMath 183Stem-and-leaf plotData structures 184Straddling checkerboardCrypto / encoding 185String comparisonString 186Strip a set of characters from a stringString 187Sub-unit squaresMath 188Sudan functionMath 189Temperature conversionMath 190Terminal control/Restricted width positional input/No wrappingI/O 191Ternary logicMath 192The Twelve Days of ChristmasMisc 193Time a functionI/O 194Transliterate English text using the Greek alphabetString 195Truncate a fileI/O 196URL decodingI/O 197URL encodingI/O 198Validate International Securities Identification NumberMath 199VectorData structures 200Vector productsMath 201Vigenère cipherCrypto / encoding 202Walk a directory/Non-recursivelyI/O 203Walk a directory/RecursivelyI/O 204War card gameGames 205Wave function collapseGraphics 206Word frequencyString 207Word wheelGames 208WordiffString 209Wordle comparisonGames 210Write language name in 3D ASCIIGraphics 211XXXX redactedString 212Zig-zag matrixMath