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Project Euler: Problem 11, Largest product in a grid

What is the greatest product of _k_ adjacent numbers in the same direction (up, down, left, right, or diagonally) in a _n×n_ gri...

3 years ago

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Sum of big primes without primes

Inspired by Project Euler n°10 (I am quite obviously a fan). With problem n°250 by Doug, you can find some global methods to ...

3 years ago

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Sums of cubes and squares of sums

Given the positive integers 1:n, can you: 1. Compute twice the sum of the cubes of those numbers. 2. Subtract the square...

3 years ago

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Rosenbrock's Banana Function and its derivatives

Write a function to return the value of <http://en.wikipedia.org/wiki/Rosenbrock_function Rosenbrock's two-dimensional banana fu...

3 years ago

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Concatenated roots

Which is the value of this infinte concatenated roots? <<https://s27.postimg.org/i4hkin7xf/Code_Cogs_Eqn.gif>> Note: If ...

3 years ago

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Calculate Euler's phi function

Compute the Euler's phi function of a large integer. For more information about this topic please visit: <https://en.wikiped...

3 years ago

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Vector pop

Take |n| elements from the end of the vector |v| and return both the shorten vector |v| and the |n| elements in a separate vecto...

3 years ago

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Vector push

Append an element |x| to the end of the vector |v| and return both the extended vector and the new number of its elements. |x| c...

3 years ago

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Please check the last row

We have data of matrix, that is input. That contains 2 or more rows and the last row should contain the average of each column,...

3 years ago

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Converting Decimal to Binary

Given a decimal number that may include a fractional component, convert it into binary representation. The numbers you are given...

3 years ago

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Church Encoding

Church encoded numeral is a function which takes two arguments _f_ and _x_ and applies _f_ to _x_ several times. For example,...

3 years ago

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calculate PI without using pi function

There are many methods to get the pi(Ratio of circumference to diameter). You should get pi without using the pi function in M...

3 years ago

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Negative without '-'

Simple: return a negative number without using the '-' sign. Thanks to Problem <https://www.mathworks.com/matlabcentral/cody/...

3 years ago

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Calculate cosine without cos(x)

Solve cos(x). The use of the function cos() and sin() is not allowed.

3 years ago

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Determinant without using det()

Given a square matrix A, compute the <http://en.wikipedia.org/wiki/Determinant determinant> of A. Note that you may not use t...

3 years ago

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Airline Ticket Mod7 Checksum

There are 13 digits in an airline ticket number. If an airline ticket number is valid, the 13th digit should be the remainder of...

3 years ago

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Array ex-OR

There are in MATLAB logical functions such as _<http://www.mathworks.co.uk/help/matlab/ref/and.html and>,_ _<http://www.math...

3 years ago

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Number of even divisors of a given number

Given a Number n, return the number of its even divisors without listing them. example: n=14 ; EvenDivisors={2,14} ; y=2 ...

3 years ago

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Choose the best fitting dominoes

You will be given a cell array of nx2 matrices. Choose one row from each matrix. These are the ordered pairs that will be plac...

3 years ago

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Find best domino orientation

Given a list of pairs, find the orientation they should be placed in a line, such that the sum of the absolute values of the dif...

3 years ago

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Split bread like the Pharaohs - Egyptian fractions and greedy algorithm

How would you split 5 loaves of bread among 8 people in all fairness? Get a hint from the Pharaohs. 5/8 = 4/8 + 1/8 , i.e. each ...

3 years ago

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Decode a simplified barcode

Given a bar code from this <http://www.mathworks.com/matlabcentral/cody/problems/602-make-a-simplified-bar-code exercise>: Re...

3 years ago

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Make a simplified barcode

Given an integer to encode, make a barcode using the following encoding scheme: * The bar code is made from the binary versio...

3 years ago

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7 segment LED display

Given a whole number, output how many segments would be lit up to display it on a 7 segment LED display (see Wikipedia: <http://...

3 years ago

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Convert Roman to Arabic Numerals

Based upon what I see on tv and at the movies, the use of Roman numerals indicates something is important or sophisticated (e.g....

3 years ago

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Math with Roman Numerals

Given a function R within (+,-,*,/) and two Roman numerals a & b, compute aRb in Roman numerals.

3 years ago