Daniel Yago

Last seen: mehr als ein Jahr vor | Aktiv seit 2018

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Flip the main diagonal of a matrix
Given a n x n matrix, M, flip its main diagonal. Example: >> M=magic(5); >> flipDiagonal(M) 9 24 1 ...

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Alternating sum
Given vector x, calculate the alternating sum y = x(1) - x(2) + x(3) - x(4) + ...

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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...

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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 ...

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Write c^3 as sum of two squares a^2+b^2
write c^3 as sum of two squares a^2+b^2. a and b must be integer and greater than zero. For example 5^3 = 2^2 + 11^2 5...

fast 5 Jahre vor

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Is the Point in a Circle?
Check whether a point or multiple points is/are in a circle centered at point (x0, y0) with radius r. Points = [x, y]; c...

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Rotate input square matrix 90 degrees CCW without rot90
Rotate input matrix (which will be square) 90 degrees counter-clockwise without using rot90,flipud,fliplr, or flipdim (or eval)....

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Converting binary to decimals
Convert binary to decimals. Example: 010111 = 23. 110000 = 48.

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Convert given decimal number to binary number.
Convert given decimal number to binary number. Example x=10, then answer must be 1010.

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If-then-else
Complete the function below such that if the value of x is in the range 10 to 14, inclusive, the value 18 is assigned to y. Oth...

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Find the product of a Vector
How would you find the product of the vector [1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0] times 2?; x = [1 : 0.5 : 6]; y ...

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Volume and area of a sphere
Input(r) - radius Output([v,s]) - volume and area

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Compute LOG(1+X) in natural log
Compute LOG(1+X) in natural log

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Cumulative product of a vector
Cumulative product of a vector example x=[1 2 5 10], then answer must be [ 1 2 10 100] *If you like this prob...

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Convert radians to degrees
Given input in radians, output to degrees

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Back to Basics - Find no. of elements in a matrix?
Let A be a m*n matrix. Find the total no. of elements in A ? (Hint - formula based) A = [1 2 3;4 5 6]; output = 6

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Find out value of sine given by degree.
Find out value of sine given by degree. If theta=30, it's value must be 0.5.

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Generate a string like abbcccddddeeeee
This is the string version of Problem 1035. <http://www.mathworks.com/matlabcentral/cody/problems/1035-generate-a-vector-like-1-...

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Find the largest number
Given a vector v with 4 elements, find the largest number x. Example: Input: v = [4 7 1 6]; Output: x = 7; You mu...

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Calculate square and cube of number
Calculate square and cube of number x

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Find the area of a triangle
Given a triangle with a base b and height h, return the triangle area.

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How many jokers?
* Given DNA codes of a group of suspects, * and a code for certain types of jokers, * Count how many jokers of that type. * ...

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Matlab Basics II - Count rows in a matrix
Write a function that returns that number of rows in a vector or matrix x example: x = [1; 2; 3] output = 3

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Back to basics 23 - Triangular matrix
Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, return a matrix with all elements above a...

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Reverse the elements of an array
Reverse the order of elements in an array: eg: input X = [ 1 2 3 ; 4 5 6 ; 7 8 9 ] o...

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square root
Find the square root (y) of an input (x).

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BASICS - sum part of vector
Please make a function, where as input you get vector "x" and and vector "c", where in "c" vector you get indexes to sum. Examp...

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Create incrementing array
Given a and b generate an output matrix as shown in following examples: a=2 b=5 output=[2 20 200 2000 20000] a=4 b...

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matrix of natural number
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 resides seially as shown in the examples below. ...

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Area of a circle
Given the radius x, y would be the area of a circle. Pi = 3.1416

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