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Solved
Hexagonal numbers on a spiral matrix
Put hexagonal numbers in a ( m x m ) spiral matrix and return the sum of its diagonal elements. Formula of hexagonal numbers ...
34 minutes ago
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Infinite precision division
Develop a function that will divide a very very large integer numerator, supplied to function as a string (e.g., '12233344445555...
40 minutes ago
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generate a matrix of Legendre polynomials
input = x - the degree of the polynomial output = matrix of Legendre polynomials
1 hour ago
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Logistic map
The sequence defined by x_n = 4*r*x_{n-1}*(1-x_{n-1}) and a given 0 < x_1 < 1 turns each x_n into a polynomial of r. Write a fu...
1 hour ago
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Cyclotomic Polynomials
Given a Natural number (N), return the corresponding Cyclotomic Polynomial.
1 hour ago
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Touchard Polynomial
Return the coefficients of nth (n>=0) Touchard polynomials - T1(x) = x; output = [1 0]; T2(x) = x^2 + x; output = [1 1 0]...
1 hour ago
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English to Pig Latin Translator
Pig latin is a faux-language based off of English. The rules are as follows (excerpted from the wikipedia entry for Pig Latin): ...
1 hour ago
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Pig Latin to English Translator
Pig latin is a faux-language based off of English. The rules are as follows (excerpted from the <http://en.wikipedia.org/wiki/Pi...
1 hour ago
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Calculate a modified Levenshtein distance between two strings
Inspired by the Cody problem found here. The Levenshtein distance is a charater-based string metric used to measure the differe...
1 hour ago
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Transposition as a CIPHER
This all about transcripting a text message. If the input string is: s1 = 'My name is Sourav Mondal', then the output is: s2 = '...
1 hour ago
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Add more zeros
Find code that adds one 0 to each sequence of 0 in a string (composed with only 0 or 1). For example: '1010' -> '100100' ...
1 hour ago
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Morse Code Generator! Try it!
.... . .-.. .-.. --- . ...- . .-. -.-- --- -. . -.-.-- .-.. . - ... -.. --- ... --- -- . -- --...
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Simple Caesar Cypher - shift encrypt a message given an index number
A Caesar cypher is a simple shift encryption method. Your goal is to create a function that allows a user to input a string and ...
1 hour ago
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Backslang, odds are you used it at some point in time...
So backslang is a language that can be used to communicate in an easy decode code, if people know the rules of decoding it. Wel...
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Generate a melodic contour string matrix
<http://en.wikipedia.org/wiki/Parsons_code Parsons code> is a surprisingly effective way to identify music by its melodic motion...
2 hours ago
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Kryptos - CIA Cypher Sculpture: Vigenere Encryption
The <http://en.wikipedia.org/wiki/Kryptos Kryptos Sculpture> contains four encypted messages. This Challenge is to Encrypt tw...
2 hours ago
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Kryptos - CIA Cypher Sculpture: Vignere Decryption
The <http://en.wikipedia.org/wiki/Kryptos Kryptos Sculpture> contains four encypted messages. This Challenge is to Decrypt tw...
2 hours ago
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Simple Decoder Ring
The stereotypical decoder ring is remembered as a cereal box prize from the 1950s. Kids learned about cryptography by starting w...
2 hours ago
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Generate a Parasitic Number
This problem is the next step up from Problem 156. Rather than determining if an input is a parasitic number, you will be asked ...
3 hours ago
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Polygonal numbers
The task of <http://www.mathworks.co.uk/matlabcentral/cody/problems/5 Problem 5> is to calculate triangular numbers. By playing ...
3 hours ago
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nth Rational Number
Return the nth rational number. This is the inverse to Problem 1471. Index of a Rational number The first ten positive rationa...
3 hours ago
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geometric progression
I've modified my <http://uk.mathworks.com/matlabcentral/cody/problems/2800-arithmetic-progression previous program> so that it n...
3 hours ago
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arithmetic progression
I've written a program to generate the first few terms of <https://en.wikipedia.org/wiki/Arithmetic_progression arithmetic progr...
3 hours ago
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Pascal's pyramid
In Pascal's triangle each number is the sum of the two nearest numbers in the line above: 1 1 1 ...
4 hours ago
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The Matrix Construction
Given two input ,first one is CN (Column Number), Second one is Dim Can you produce such a matrix for example CN=6; Dim=2 ...
4 hours ago
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Create a block diagonal matrix
A block diagonal matrix is a square matrix that can be written as A = [a 0 0 0 0 b 0 0 0 0 c 0 ...
4 hours ago
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BULLSEYE Part 2: Reference Problem 18 BULLSEYE
Given n (always odd), return output a that has concentric rings of the 1s and 0s around the center point. Examples: Input ...
4 hours ago
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Combine Data With Gaps
Combine data sets a and b where the datasets have "gaps" or unique points. Example: Input a = [1,0; 2,1; ...
5 hours ago
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Pancake sorting
Sort a stack of pancakes by flipping them using spatula. * There are _N_ pancakes with diameters _1:N_. * Spatula can be ins...
5 hours ago
