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# KO

484 total contributions since 2017

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give nth decimal place of pi
max 15th place after the decimal point is ok for now

9 months ago

Solved

Back to basics 21 - Matrix replicating
Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, generate an output matrix that consists o...

9 months ago

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Finding fourier transform of a given vector
Find the fourier transform of a given input vector for ex a=[1 2 3 4] then y=[ 10.0000 + 0.0000i -2.0000 +...

10 months ago

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Calculate the number of elements in a matrix.
Calculate the number of elements in a matrix.

10 months ago

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Initialize a Natural Number matrix.
Given length of matrix initialize a matrix consisting of natural numbers from 1 to n: n = 10; x = [ 1 2 3 4 5 6 7 8 9 10]; ...

10 months ago

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raise 1/3
Raise a number to 1/3 power.

10 months ago

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My Problem, Find the square of the horizontal concatenation of the third and fifth elements of a vector.
given the 1x5 vector x, y must be the square of the horizontal concatenation of the third and fifth elements. So, if x = [1 1 1 ...

10 months ago

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Step up
For given input array, output a array with all elements step up by two

10 months ago

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Reverse CHECKBOX MATRIX with 69
Create a reverse checkbox matrix with '69'. Where the size is the input and output will be a square checkbox matrix. Exa...

10 months ago

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Remove and Sort
Given a randomized array n, sort it and remove all odd integers. n=5 y = [2 4]

10 months ago

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Flipping a Matrix
Flipping matrix up and down. If a central row is exists, leave it, and flip remaining rows. Example Mat = magic(3) ...

10 months ago

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Add one raw in given matrix as shown in example
*Add one raw in given matrix as shown in example* A=[1 0;0 1]; X=[3 5]; Answer must be:[1 0; 0 1;3 5]

10 months ago

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Nth root
Nth root of a number x

10 months ago

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Pointwise multiplication of vectors.
Pointwise multiplication of vectors x and y. Example x= [1 3 5 7 9 11 13 15 17 19] y=[ 1 4...

10 months ago

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Linear system of equations
Solve the system of equations in three variables.

10 months ago

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Sum of cubes
Write a program to determine sum of cubes of first n odd numbers.

10 months ago

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Extract a specific part of matrix!
In the given matrix, extract element that have odd rows and column number. For example A=[1 4 2 3 5] B=extractodd(A);...

10 months ago

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Reverse Concatenation
Suggest methods to form a Matrix after deleting one of the input's elements. Input should be element's position and output shou...

10 months ago

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Find Sign(Zero Crossing) Changes in Array
Example; A = [1 2 3 -3 -4 -1 -24 2 4 -1 -2 3 1]; ans; [1 2 0 -3 -4 -1 0 2 0 -1 ...

10 months ago

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MPS to MPH
Given the speed in miles per second, find the speed in miles per hour.

10 months ago

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Shift elements of vector left
Shift elements of vector to the left. For ex. : Input_vec = [1 2 3 4 5] Output_vec = [2 3 4 5 1]

10 months ago

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Find the minimal value in N*N Matrix
Suppose that we have N by N matrix, we try to find the minimal value in that matrix. examples: Input A=[1 2 3 5 6;52 58 56 45...

10 months ago

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Delete blanks at the end of string
you got to delete all blank spaces which appears at the end of string

10 months ago

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Display negative numbers
Given array,x, display all the negative numbers and display output as y. Example x=[1 -2 3 -4] , output is y=[-2 -4].

10 months ago

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row removal
Consider a matrix and remove the first row of the matrix.

10 months ago

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Kinetic Energy
Given mass, m, and kinetic energy, KE, find the velocity of the object.

10 months ago

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"Power matrix" of two vectors
Given two row vectors x,y of lengths m and n (respectively), create an m x n matrix whose i,j entry is x(i)^y(j).

10 months ago

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Sum of series IV
What is the sum of the following sequence: Σ(-1)^(k+1) (2k-1)^2 for k=1...n for different n?

10 months ago

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modulus of a number
find the modulus of a given number

11 months ago

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Sum of series VII
What is the sum of the following sequence: Σ(km^k)/(k+m)! for k=1...n for different n and m?

11 months ago