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87 KiB
87 KiB
Summary
- Introduction
- Preface
- Getting Started
- Sidef interpreter
- Syntax and semantics
- Programming tasks
- 1
- 2
- 4
- 9
- A
- A* search algorithm
- A B
- ABC problem
- Abstract type
- Abundant deficient and perfect number classifications
- Abundant odd numbers
- Accumulator factory
- Ackermann function
- Add a variable to a class instance at runtime
- Additive primes
- Address of a variable
- AKS test for primes
- Align columns
- Almkvist-Giullera formula for pi
- Almost prime
- Amicable pairs
- Anagrams
- Angle difference between two bearings
- Animate a pendulum
- Anonymous recursion
- Anti-primes
- Append a record to the end of a text file
- Append numbers at same position in strings
- Apply a callback to an array
- Apply a digital filter direct form II transposed
- Approximate equality
- Arbitrary-precision integers included
- Archimedean spiral
- Arithmetic
- Arithmetic-geometric mean
- Arithmetic coding
- Arithmetic evaluation
- Array concatenation
- Array length
- Array search
- Arrays
- Ascending primes
- Assertions
- Associative array
- Attractive numbers
- Average loop length
- Averages
- AVL tree
- B
- Babbage problem
- Balanced brackets
- Barnsley fern
- Base58Check encoding
- Base64 decode data
- Base64 encode data
- Base 16 numbers needing a to f
- Bell numbers
- Benford's law
- Bernoulli numbers
- Best shuffle
- Bilinear interpolation
- Binary digits
- Binary search
- Bitmap
- Bitwise operations
- Boolean values
- Box the compass
- Brace expansion
- Brazilian numbers
- Break OO privacy
- Brilliant numbers
- Brownian tree
- Bulls and cows
- Burrows Wheeler transform
- C
- Caesar cipher
- Calculating the value of e
- Calendar
- Calendar - for REAL programmers
- Calkin-Wilf sequence
- Call a function
- Call an object method
- Cantor set
- Carmichael 3 strong pseudoprimes
- Cartesian product of two or more lists
- Case-sensitivity of identifiers
- Casting out nines
- Catalan numbers
- Catamorphism
- Change e letters to i in words
- Changeable words
- Chaos game
- Character codes
- Chebyshev coefficients
- Check Machin-like formulas
- Check that file exists
- Checksumcolor
- Chernick's Carmichael numbers
- Cheryl's birthday
- Chinese remainder theorem
- Chinese zodiac
- Cholesky decomposition
- Cipolla's algorithm
- Circles of given radius through two points
- Circular primes
- Classes
- Closest-pair problem
- Closures
- Collect and sort square numbers in ascending order from three lists
- Collections
- Color quantization
- Color wheel
- Colour bars
- Colour pinstripe
- Combinations
- Combinations and permutations
- Combinations with repetitions
- Comma quibbling
- Command-line arguments
- Comments
- Compare a list of strings
- Compile-time calculation
- Composite numbers k with no single digit factors whose factors are all substrings of k
- Compound data type
- Concatenate two primes is also prime
- Concurrent computing
- Conjugate transpose
- Consecutive primes with ascending or descending differences
- Constrained genericity
- Constrained random points on a circle
- Continued fraction
- Arithmetic
- Convert decimal number to rational
- Convert seconds to compound duration
- Convex hull
- Conway's Game of Life
- Coprime triplets
- Coprimes
- Copy a string
- Count in factors
- Count in octal
- Count occurrences of a substring
- Count the coins
- Cousin primes
- Cramer's rule
- Create a file
- Create a two-dimensional array at runtime
- Create an HTML table
- CSV data manipulation
- CSV to HTML translation
- Cuban primes
- Cubic special primes
- Cullen and Woodall numbers
- Cumulative standard deviation
- Currency
- Currying
- Curzon numbers
- Cycle detection
- Cyclops numbers
- Cyclotomic polynomial
- D
- Damm algorithm
- Date format
- Date manipulation
- Day of the week
- Days between dates
- Death Star
- Deceptive numbers
- Decimal floating point number to binary
- Decision tables
- Deepcopy
- Define a primitive data type
- Delegates
- Delete a file
- Deming's Funnel
- Department numbers
- Descending primes
- Detect division by zero
- Determinant and permanent
- Determine if a string has all the same characters
- Determine if a string has all unique characters
- Determine if a string is collapsible
- Determine if a string is numeric
- Determine if a string is squeezable
- Determine if only one instance is running
- Dice game probabilities
- Digit fifth powers
- Digital root
- Dijkstra's algorithm
- Dinesman's multiple-dwelling problem
- Disarium numbers
- Discordian date
- Display a linear combination
- Distinct palindromes within decimal numbers
- Distinct power numbers
- Distribution of 0 digits in factorial series
- Diversity prediction theorem
- DNS query
- Dot product
- Doubly-linked list
- Dragon curve
- Draw a clock
- Draw a cuboid
- Draw a sphere
- Duffinian numbers
- Dynamic variable names
- E
- Earliest difference between prime gaps
- Egyptian division
- Egyptian fractions
- EKG sequence convergence
- Element-wise operations
- Elementary cellular automaton
- Elliptic curve arithmetic
- Emirp primes
- Empty directory
- Empty program
- Empty string
- Enforced immutability
- Entropy
- Enumerations
- Environment variables
- Equilibrium index
- Erdős-primes
- Esthetic numbers
- Ethiopian multiplication
- Euclid-Mullin sequence
- Euler's constant 0 5772
- Euler's identity
- Euler's sum of powers conjecture
- Euler method
- Evaluate binomial coefficients
- Even or odd
- Evolutionary algorithm
- Exactly three adjacent 3 in lists
- Exceptions
- Executable library
- Execute a system command
- Execute Brain****
- Execute HQ9
- Exponentiation operator
- Exponentiation order
- Extend your language
- Extensible prime generator
- Extra primes
- Extract file extension
- Extreme floating point values
- F
- Factorial
- Factorions
- Factors of a Mersenne number
- Factors of an integer
- Fairshare between two and more
- Farey sequence
- Fast Fourier transform
- FASTA format
- Faulhaber's formula
- Faulhaber's triangle
- Feigenbaum constant calculation
- Fermat numbers
- Fibonacci matrix-exponentiation
- Fibonacci n-step number sequences
- Fibonacci sequence
- Fibonacci word
- File extension is in extensions list
- File input
- File modification time
- File size
- File size distribution
- Filter
- Find adjacent primes which differ by a square integer
- Find common directory path
- Find duplicate files
- Find first and last set bit of a long integer
- Find largest left truncatable prime in a given base
- Find limit of recursion
- Find palindromic numbers in both binary and ternary bases
- Find prime n such that reversed n is also prime
- Find prime numbers of the form nnn 2
- Find square difference
- Find squares n where n 1 is prime
- Find the intersection of a line with a plane
- Find the intersection of two lines
- Find the last Sunday of each month
- Find the missing permutation
- Find words whose first and last three letters are equal
- First-class functions
- First 9 prime Fibonacci number
- First class environments
- First missing positive
- First perfect square in base n with n unique digits
- First power of 2 that has leading decimal digits of 12
- Five weekends
- Fivenum
- FizzBuzz
- Flatten a list
- Flow-control structures
- Floyd's triangle
- Floyd-Warshall algorithm
- Forest fire
- Fork
- Formatted numeric output
- Fortunate numbers
- Forward difference
- Four bit adder
- Four is magic
- Four sides of square
- Fractal tree
- Fractran
- Free polyominoes enumeration
- French Republican calendar
- Frobenius numbers
- FTP
- Function composition
- Function definition
- Function frequency
- Fusc sequence
- G
- Gamma function
- Gapful numbers
- Gauss-Jordan matrix inversion
- Gaussian elimination
- General FizzBuzz
- Generate Chess960 starting position
- Generate lower case ASCII alphabet
- Generate random numbers without repeating a value
- Generator
- Generic swap
- Get system command output
- Getting the number of decimals
- Globally replace text in several files
- Gray code
- Grayscale image
- Greatest common divisor
- Greatest element of a list
- Greatest subsequential sum
- Guess the number
- GUI
- H
- Hailstone sequence
- Hamming numbers
- Handle a signal
- Happy numbers
- Harshad or Niven series
- Hash from two arrays
- Hash join
- Haversine formula
- Hello world
- Here document
- Heronian triangles
- Hickerson series of almost integers
- Higher-order functions
- Hilbert curve
- History variables
- Hofstadter-Conway 10 000 sequence
- Hofstadter Figure-Figure sequences
- Hofstadter Q sequence
- Holidays related to Easter
- Home primes
- Honeycombs
- Horizontal sundial calculations
- Horner's rule for polynomial evaluation
- Hostname
- Hough transform
- HTTP
- HTTPS
- Huffman coding
- Humble numbers
- I
- IBAN
- Identity matrix
- Imaginary base numbers
- Implicit type conversion
- Include a file
- Increment a numerical string
- Index finite lists of positive integers
- Infinity
- Inheritance
- Input loop
- Integer comparison
- Integer overflow
- Integer roots
- Integer sequence
- Interactive programming
- Inverted syntax
- Isqrt integer square root of X
- Iterated digits squaring
- J
- K
- L
- Lah numbers
- Langton's ant
- Largest difference between adjacent primes
- Largest five adjacent number
- Largest int from concatenated ints
- Largest number divisible by its digits
- Largest palindrome product
- Largest prime factor
- Largest product in a grid
- Last Friday of each month
- Last letter-first letter
- Last list item
- Leap year
- Least common multiple
- Left factorials
- Legendre prime counting function
- Leonardo numbers
- Letter frequency
- Levenshtein distance
- Linear congruential generator
- List comprehensions
- List rooted trees
- Literals
- Logical operations
- Long multiplication
- Long primes
- Long year
- Longest common prefix
- Longest common subsequence
- Longest common substring
- Longest increasing subsequence
- Longest string challenge
- Look-and-say sequence
- Loop over multiple arrays simultaneously
- Loops
- LU decomposition
- Lucas-Lehmer test
- Ludic numbers
- Luhn test of credit card numbers
- Lychrel numbers
- LZW compression
- M
- Möbius function
- Mad Libs
- Magic constant
- Magic squares of doubly even order
- Magic squares of odd order
- Magnanimous numbers
- Make directory path
- Man or boy test
- Mandelbrot set
- Map range
- Markov chain text generator
- Matrix-exponentiation operator
- Matrix multiplication
- Matrix transposition
- Matrix with two diagonals
- Maximum triangle path sum
- Maze generation
- MD4
- MD5
- Menu
- Mersenne primes
- Mertens function
- Metallic ratios
- Metaprogramming
- Metronome
- Mian-Chowla sequence
- Middle three digits
- Miller Rabin primality test
- Minimum multiple of m where digital sum equals m
- Minimum numbers of three lists
- Minimum positive multiple in base 10 using only 0 and 1
- Minimum primes
- Modular arithmetic
- Modular exponentiation
- Modular inverse
- Modulinos
- Monte Carlo methods
- Montgomery reduction
- Monty Hall problem
- Mosaic matrix
- Most frequent k chars distance
- Motzkin numbers
- Move-to-front algorithm
- Multi-base primes
- Multifactorial
- Multiline shebang
- Multiple distinct objects
- Multiplication tables
- Multiplicative order
- Multisplit
- Munchausen numbers
- Munching squares
- Mutual recursion
- N
- N'th
- N-queens problem
- N-smooth numbers
- Named parameters
- Names to numbers
- Narcissist
- Narcissistic decimal number
- Native shebang
- Natural sorting
- Negative base numbers
- Neighbour primes
- Nested function
- Next highest int from digits
- Next special primes
- Nice primes
- Non-continuous subsequences
- Non-decimal radices
- Nth root
- Null object
- Number names
- Number reversal game
- Numbers divisible by their individual digits but not by the product of their digits
- Numbers in base-16 representation that cannot be written with decimal digits
- Numbers in base 10 that are palindromic in bases 2 4 and 16
- Numbers which binary and ternary digit sum are prime
- Numbers whose count of divisors is prime
- Numbers with equal rises and falls
- Numbers with prime digits whose sum is 13
- Numbers with same digit set in base 10 and base 16
- Numeric separator syntax
- Numerical integration
- O
- Odd and square numbers
- Odd squarefree semiprimes
- Odd word problem
- Old lady swallowed a fly
- Old Russian measure of length
- One-dimensional cellular automata
- One of n lines in a file
- Operator precedence
- Optional parameters
- Orbital elements
- Order disjoint list items
- Order two numerical lists
- Ordered partitions
- Ordered words
- Own digits power sum
- P
- Padovan n-step number sequences
- Palindrome dates
- Palindrome detection
- Palindrome pairs
- Palindromic gapful numbers
- Palindromic primes
- Palindromic primes in base 16
- Pandigital prime
- Pangram checker
- Parallel brute force
- Parallel calculations
- Parsing
- Partial function application
- Partition an integer x into n primes
- Partition function P
- Pascal's triangle
- Pascal matrix generation
- Pathological floating point problems
- Peano curve
- Pell's equation
- Penrose tiling
- Pentagram
- Percentage difference between images
- Percolation
- Perfect numbers
- Perfect shuffle
- Perfect totient numbers
- Perlin noise
- Permutation test
- Permutations
- Permutations by swapping
- Permutations with repetitions
- Permutations with some identical elements
- Pernicious numbers
- Phrase reversals
- Pi
- Pick random element
- Pierpont primes
- Pig the dice game
- Piprimes
- Pisano period
- Plasma effect
- Playfair cipher
- Playing cards
- Plot coordinate pairs
- Pointers and references
- Polymorphic copy
- Polymorphism
- Polynomial derivative
- Polynomial long division
- Polynomial regression
- Polynomial synthetic division
- Population count
- Positive decimal integers with the digit 1 occurring exactly twice
- Power set
- Powerful numbers
- Practical numbers
- Price fraction
- Primality by trial division
- Primality by Wilson's theorem
- Prime conspiracy
- Prime decomposition
- Prime numbers p for which the sum of primes less than or equal to p is prime
- Prime numbers p which sum of prime numbers less or equal to p is prime
- Prime numbers which contain 123
- Primes - allocate descendants to their ancestors
- Primes which contain only one odd digit
- Primes whose first and last number is 3
- Primes whose sum of digits is 25
- Primes with digits in nondecreasing order
- Primorial numbers
- Priority queue
- Probabilistic choice
- Problem of Apollonius
- Program name
- Program termination
- Proper divisors
- Pseudo-random numbers
- Pseudorandom number generator image
- Pythagoras tree
- Pythagorean quadruples
- Pythagorean triples
- Q
- R
- Ramanujan's constant
- Ramer-Douglas-Peucker line simplification
- Ramsey's theorem
- Random number generator device
- Random number generator included
- Random numbers
- Range expansion
- Ranking methods
- Rate counter
- Read a configuration file
- Read a file character by character
- Read a file line by line
- Read a specific line from a file
- Read entire file
- Readline interface
- Real constants and functions
- Recaman's sequence
- Reduced row echelon form
- Reflection
- Regular expressions
- Remove duplicate elements
- Remove lines from a file
- Rename a file
- Rep-string
- Repeat
- Repeat a string
- Repunit primes
- Resistor mesh
- Respond to an unknown method call
- Return multiple values
- Reverse a string
- Reverse the gender of a string
- Reverse words in a string
- Rhonda numbers
- Rock-paper-scissors
- Roman numerals
- Roots of a function
- Roots of a quadratic function
- Roots of unity
- Rosetta Code
- Rot-13
- RSA code
- Run-length encoding
- Run as a daemon or service
- Runge-Kutta method
- Runtime evaluation
- Ruth-Aaron numbers
- S
- S-expressions
- Safe primes and unsafe primes
- Sailors coconuts and a monkey problem
- Same fringe
- Sattolo cycle
- Scope
- Search a list
- Search a list of records
- Secure temporary file
- SEDOLs
- Self-describing numbers
- Self numbers
- Semiprime
- Semordnilap
- Send an unknown method call
- Separate the house number from the street name
- Sequence nth number with exactly n divisors
- Sequence of non-squares
- Sequence of primes by trial division
- Sequence of primorial primes
- Sequence smallest number greater than previous term with exactly n divisors
- Sequence smallest number with exactly n divisors
- Set
- Set consolidation
- Seven-sided dice from five-sided dice
- Sexy primes
- SHA-1
- SHA-256
- Shell one-liner
- Shoelace formula for polygonal area
- Short-circuit evaluation
- Shortest common supersequence
- Show the decimal value of a number of 1s appended with a 3 then squared
- Show the epoch
- Sierpinski arrowhead curve
- Sierpinski carpet
- Sierpinski curve
- Sierpinski pentagon
- Sierpinski square curve
- Sierpinski triangle
- Sieve of Eratosthenes
- Simple windowed application
- Simulated annealing
- Singleton
- Singly-linked list
- Sleep
- Smallest numbers
- Smallest square that begins with n
- Smarandache prime-digital sequence
- Smith numbers
- Snake
- Sockets
- Solve triangle solitare puzzle
- Sort a list of object identifiers
- Sort an array of composite structures
- Sort an integer array
- Sort disjoint sublist
- Sort numbers lexicographically
- Sort stability
- Sort three variables
- Sort using a custom comparator
- Sorting algorithms
- Soundex
- Sparkline in unicode
- Special divisors
- Special factorials
- Special neighbor primes
- Speech synthesis
- Spelling of ordinal numbers
- Spiral matrix
- Split a character string based on change of character
- SQL-based authentication
- Square-free integers
- Square but not cube
- Stable marriage problem
- Stack
- Stair-climbing puzzle
- Standard deviation
- Statistics
- Stem-and-leaf plot
- Stern-Brocot sequence
- Stirling numbers of the first kind
- Stirling numbers of the second kind
- Strange numbers
- Strange plus numbers
- Stream merge
- String append
- String case
- String comparison
- String concatenation
- String interpolation included
- String length
- String matching
- String prepend
- Strip a set of characters from a string
- Strip block comments
- Strip comments from a string
- Strip control codes and extended characters from a string
- Strip whitespace from a string
- Strong and weak primes
- Subleq
- Subset sum problem
- Substitution cipher
- Substring
- Substring primes
- Subtractive generator
- Successive prime differences
- Sudoku
- Suffix tree
- Sum and product of an array
- Sum and product puzzle
- Sum digits of an integer
- Sum multiples of 3 and 5
- Sum of a series
- Sum of divisors
- Sum of first n cubes
- Sum of squares
- Sum of the digits of n is substring of n
- Sum of two adjacent numbers are primes
- Sum to 100
- Summarize primes
- Sunflower fractal
- Super-d numbers
- Superellipse
- Superpermutation minimisation
- Sutherland-Hodgman polygon clipping
- Sylvester's sequence
- Symmetric difference
- System time
- T
- Table creation
- Take notes on the command line
- Tarjan
- Tau function
- Tau number
- Taxicab numbers
- Temperature conversion
- Terminal control
- Test integerness
- Text between
- Text processing
- Textonyms
- The ISAAC Cipher
- The Twelve Days of Christmas
- Thiele's interpolation formula
- Thue-Morse
- Time a function
- Tokenize a string
- Tokenize a string with escaping
- Tonelli-Shanks algorithm
- Top rank per group
- Topic variable
- Topological sort
- Totient function
- Towers of Hanoi
- Trabb Pardo Knuth algorithm
- Tree traversal
- Trigonometric functions
- Triplet of three numbers
- Truncatable primes
- Truncate a file
- Truth table
- Twelve statements
- Twin primes
- Two sum
- U
- V
- W
- X
- Y
- Z
- The End