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Energy-Mass Equivalence
Given input enegy of the object, E, and constant c = 300,000,000, find the mass of the object.

8 years ago

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Avengers Assemble!
Given matrix with so many zeroes, trim those zeroes and output a matrix joining all nnz elements Example: input = [0 0 0 0 0...

8 years ago

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Count given word x in text.
Count how many times given word x repeats in text.

8 years ago

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Fermat's last theorem - again
For a given integer n, express it as a sum of two squares if possible. Return empty matrix otherwise. Solution may not be unique...

8 years ago

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Insert certain elements into a vector.
We start with vector V. Some values W will be inserted into V, at positions U. Say, |V| contains |[1 2 3 4 5]| and |W| is |[0...

8 years ago

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Divisible by 21
Write a function to determine if a number is divisible by 21.

8 years ago

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It's going down. We're finding simbers!
This problem is inspired by Project Euler 520: Simbers. "We define a simber to be a positive integer in which any odd digit, ...

8 years ago

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Find the index of nth maximum of a row vector of real numbers
Given a vector of real numbers x, find the index idx of _n_ th maximum value. If nth maximum occurs more than once, return the i...

8 years ago

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Find the product of the positive elements above the main diagonal.
Example Input A=[1 2; -3 0] Output 2

8 years ago

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Circular Shift Me
Given a vector v=[1 3 6 9 11], circular shift them while iterating m=[1 3 6 9 11; 11 1 3 6 9; 9 11 1 3 6; 6 9 11 1 3; 3 6 9 1...

8 years ago

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Average valid values of arrays
Given a 1D array (column or row vector), compute the average of valid values. Valid values are defined via two thresholds: minVa...

8 years ago

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[Thermodynamics] Estimate boiling point of n-alkanes
Estimate the boiling point (in Kelvin) of n-Alkanes (n >= 2) using the group contribution method of Joback --- ...

8 years ago

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Component area
Find the area of the component below, all measurements are in mm <<https://image.ibb.co/hocruF/Component.png>>

8 years ago

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Calculate sin(x) without sin(x)
Calculate y = sin(x) x = 0 -> y= 0 without the use of sin(x) or cos(x)

8 years ago

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bad colorimeter?
You have tested one good and one bad colorimeters with a colored solution at two path lengths of light and recorded transmittanc...

8 years ago

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Calculate feeling temperature before climbing a mountain
I sometimes climb a mountain. As is well known, when the altitude becomes 100 (m) higher, the temperature lowers by 0.6 degrees...

8 years ago

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Calculate the sum of elements of n*n Hilbert matrix.
Calculate the sum of elements of n*n Hilbert matrix. For example, for n=5: HilbertMatrix = [1.0000 0.5000 0.333...

8 years ago

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determine amount cookies left
started with 3 cookies and you never ate any how many are left

8 years ago

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Replace x value into y value in string text.
Replace x value into y value in string text. Example text='Hello World' x='World', y='Universe' result='Hello Universe'.

8 years ago

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Rankine to Kelvin Converter
Given input R, degrees Rankine, convert into degrees Kelvin.

8 years ago

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Billiards
Considering there are 15 pool balls, (b), in the game of pool, and given a radius, (r). What is the volume, (V), of a rack in th...

8 years ago

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find "greatest common divisor" of two integer value
A function to find Greatest Common Divisor of two integer input E.G. x=-18 y=96 output should be +6 x=-18; y=96; >>your...

8 years ago

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World Cup 2018 Prediction!
Which team will be the winner?

8 years ago

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Image Series 3 Complementary
Find the Complementary of image which is 8 bits gray scale image. Each pixel is converted to binary format in the image. A...

8 years ago

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Mongean Shuffle : 2
Extension to <https://www.mathworks.com/matlabcentral/cody/problems/2479-mongean-shuffle problem 2479>: Determine the number...

8 years ago

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Dimensions of Spaces
Find the dimension of the column space, null space, row space, and left null space for any matrix. Example input A=[1 2 ...

8 years ago

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Get ranking of a combination
I have the numbers pulled without replacement from the set [1 2 3 4 5 6 7 8 9 10 11 12 13]; They are then ordered from least to...

8 years ago

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Problem 44444 !!! free beer everyone
just say hallelujah to solve this problem

8 years ago

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Rank of magic square (for beginners)
Compute the rank r of a magic square of order n WITHOUT rank and magic functions.

8 years ago

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Cofactor
Given a matrix, find the cofactor of the element in 'i'th row and 'j'th column.

8 years ago