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Takehiko KOBORI


704 total contributions since 2012

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Solved


Is My Wife Wrong?
Answer the question. (see also <http://www.mathworks.com/matlabcentral/cody/problems/149-is-my-wife-right Problem 149: Is my ...

4년 이하 ago

Solved


Matlab Basics - Logical Tests I
Write a script to test whether a year number is for a leap year or not. eg. x = 1884 output = 1 eg. x = 3 output = 0

4년 이하 ago

Solved


Matlab Basics II - squares
Write a function that takes matrix A, and squares each element in the matrix example: A = [1 2 3] output = [1 4 9]

4년 이하 ago

Solved


calculate RMS voltage
given peak to peak voltage, calculate rms voltage

4년 이하 ago

Solved


Divide by 4
Given the variable x as your input, divide it by four and put the result in y.

4년 이하 ago

Solved


find the roots of a quadratic equation
for e.g x = [ 2 -1 -3] y = [1.5 -1]

4년 이하 ago

Solved


calculate linear convolution two vectors
for e.g in: a = [1 2 3] b = [4 5 6] out: y = [4 13 28 27 18]

4년 이하 ago

Solved


Are you in XY plane?
Take a point P as an input position Vector (x,y,z). If you are in XY plane, return 1 as an output otherwise return 0. Example...

4년 이하 ago

Solved


Max index of 3D array
Given a three dimensional array M(m,n,p) write a code that finds the three coordinates x,y,z of the Maximum value. Example ...

4년 이하 ago

Solved


Hard limit function
Classify x data as if x>=0 then y=1 if x<0 then y=0 Example x = [ -2 -1 0 1 2] y = [ 0 0 1 1 1]

4년 이하 ago

Solved


Sum the 'edge' values of a matrix
Sum the 'edge' values of an input matrix (the values along the perimeter). Example [1 2 3 4 5 6 7 8 9] Output = ...

4년 이하 ago

Solved


Frobenius Norm
Write your own version of Frobenius Norm without using the 'norm' function.

4년 이하 ago

Solved


Determine the mean of matrix
Determine the mean of matrix without using mean function Hint: use simple algorithm

4년 이하 ago

Solved


Matlab Basics II - Minimum
Write a function that returns the minimum of each ROW of a matrix x example: x = [1 2 3; 4 5 6]; output [1;4];

4년 이하 ago

Solved


multiply by three
Given the variable x as your input, multiply it by 3 and put the result equal to y. Examples: Input x = 2 Output y is ...

4년 이하 ago

Solved


Symmetric matrix
You must create a n-by-n *symmetric* matrix such that A(row,col) = row/col for col >= row. Example if n =3 : output is : ...

4년 이하 ago

Solved


Project Euler: Problem 4, Palindromic numbers
A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 ...

4년 이하 ago

Solved


Cody Computer Part 4 : Are you a morning Cody player Addicted ?
This is a stupid Cody challenge. You just have to *click "Submit" between 7 and 9 AM.* ... Greenwich Mean Time (GMT). To see ...

4년 이하 ago

Solved


Moving average (variable kernel length)
Find the moving average in a vector. The kernel length is a variable. For example x = 1:10 kernel_length = 2 would r...

4년 이하 ago

Solved


Palindrome Check
Check whether the entire matrix is palindrome or not. Example matrix = [7 8 7] matrix_reverse = [7 8 7] So the mat...

4년 이하 ago

Solved


Next Lower Power of B
Given a number _n_ and a base _B_ greater than 1, return the lowest integer power of _B_ that is less than or equal to _n_. E...

4년 이하 ago

Solved


Text processing - Help Johnny write a letter home from camp
Johnny overuses the word 'great'. Write a script that will help him with this and future letters. If a sentence contains more ...

4년 이하 ago

Solved


Upper triangular matrix
Create a function to retrieve the upper triangular matrix of a matrix (without using tril). The matrix will always be square. ...

4년 이하 ago

Solved


Integer or Float?
Test an input to see whether it is an integer or a floating point number. If it is an integer return 1 for 'true'. Otherwise ret...

4년 이하 ago

Solved


Signed Magnitude
For a given input vector, return the value that is furthest from zero. For example, if x = [1 2 -12] return -12.

4년 이하 ago

Solved


String substitution, sub problem to cryptoMath
This is a sub problem related to this problem: <http://www.mathworks.com/matlabcentral/cody/problems/621-cryptomath-addition>...

4년 이하 ago

Solved


Volume of a box
Given a box with a length a, width b, and height c. Solve the volume of the box.

4년 이하 ago

Solved


Saving MATLAB session to a file
How to save MATLAB session to a file?

4년 이하 ago

Solved


edge detection
write a function that gives the indexes of rising or falling edge x is a vector (assume it contains always at least one eleme...

4년 이하 ago

Solved


Tiling a matrix
Given a matrix and a number of columns, replicate matrix in a single row

4년 이하 ago

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