Solved

Matrix multiplication across rows
Given matrix m, return matrix n such that, rows of n are result of multiplication of the rows of the input matrix Example ...

6 years ago

Solved

A matrix of extroverts
Now that the introverts have had their script, the extroverts spoke up (naturally!) and demanded one as well. You will be given...

6 years ago

Solved

Convert matrix to 3D array of triangular matrices
Given a 2D numeric array x in which each column represents the vectorized form of an upper triangular matrix, return a 3D array ...

6 years ago

Solved

Enlarge array
Given an m-by-n numeric array (A) and a 1-by-2 vector (sz) indicating the dimensions [p q] to enlarge each element, return an (m...

6 years ago

Solved

MatCAT - Reconstruct X from Its X-rays
Consider a matrix x x = [ 1 2 0 0 5 0 3 0 8 ] If we sum x along the rows we get row_sums = [3 5 11] ...

6 years ago

Solved

matrix zigzag
Unfold a 2-D matrix to a 1-D array in zig-zag order, e.g., for matrix [ 1 2 3 ; 4 5 6 ; 7 8 9 ] the resulting 1-...

6 years ago

Solved

Too Many Zeros, Dump Them!
Sometimes when I create a matrix, I use this syntax: a = zeros(1000,1000); But when the function ends, I find that I don'...

6 years ago

Solved

subtract central cross
Given an n-by-n square matrix, where n is an odd number, return the matrix without the central row and the central column.

6 years ago

Solved

frame of the matrix
Given the matrix M, return M without the external frame.

6 years ago

Solved

Remove entire row and column in the matrix containing the input values
Remove the entire row and column from the matrix containing specific values. The specified value can be a scalar or a vector. Fo...

6 years ago

Solved

Box
Give the volume of a box, x is equal to the body diagonal.

6 years ago

Solved

Mid-term report
You just got your mid-term report, but it's full of ones and twos :(. So before you give it to your parents, you change it, in o...

6 years ago

Solved

Simple Matrix
Make the following matrix without typing it in one by one. [1 2 3; 2 4 6; 4 8 12] x=[1 2 3].

6 years ago

Solved

Problem for beginners
Suppose that x is a column vector, with at least a length of 6. Delete the 2., 6., and the second last row. Example: X=[1;2;3...

6 years ago

Solved

Problem for beginners
M is a nxm matrix. Swap the fist and the second last column with eachother. X=[1 2 3;4 5 6;7 8 9] Y=[2 1 3;5 4 6;8 7 9]

6 years ago

Solved

Stairs
Make an n by n matrix, where the elements are ones and zeros. In the main diagonal, and under that, there should be only ones (...

6 years ago

Solved

Square
X is a number, write a code, where Y should be the square of X.

6 years ago

Solved

Square root
Given x (a matrix), give back another matrix, where all the elements are the square roots of x's elements.

6 years ago

Solved

Matrix problem for beginners
Make a matrix [0,0,0;1,1,1;2,2,2]. X=[0,1,2]

6 years ago

Solved

Matrix for beginners
Multiply x and y elemwise.

6 years ago

Solved

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,...

6 years ago

Solved

Calculate the sum of two polynomials
Calculate the sum of two polynomials if they are written in notation with their coefficients. example: a=[3 4 5]; b=[...

6 years ago

Solved

Make an N-dimensional Multiplication Table
*INSTRUCTIONS* This is a multi-dimensional variant of the normal multiplication table used to teach elementary students multi...

6 years ago

Solved

~~~~~~~ WAVE ~~~~~~~~~
|The WAVE generator| Once upon a time there was a river. 'Sum' was passing by the river. He saw the water of the river that w...

6 years ago

Solved

Given a 4x4 matrix, swap the two middle columns
If a = [1 2 3 4; 1 2 3 4; 1 2 3 4; 1 2 3 4]; then the result is ans = 1 3 2 4 1 3 2...

6 years ago

Solved

Some Assembly Required
The input to this function is a matrix of real numbers. Your job is to assemble the rows of the matrix into one large row that ...

6 years ago

Solved

Approximate e
Given a and n, compute and approximation to f = a * e ^ n, without the use of exp, string operations, or floating point numbers....

6 years ago

Solved

Bouncy numbers
Inspired by Project Euler n°112. * * Working from left-to-right if no digit is exceeded by the digit to its left it is call...

6 years ago

Solved

Euler–Mascheroni constant
Approximate the Euler-Mascheroni constant using the series representation gamma_n=\sum_{k=1}^{n} [1/k-ln(1+1/k)] Calculat...

6 years ago

Solved

Polar Form Complex Number Entry
Write a function that takes the magnitude and angle(in degrees) of a complex number and returns a complex variable. Positive ang...

6 years ago