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First non-zero element in each column
For a given matrix, calculate the index of the first non-zero element in each column. Assuming a column with all elements zero ...

quasi 10 anni fa

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Basics: 'Find the eigenvalues of given matrix
Find the eigenvalues y for a given matrix x.

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Count ones
Write a program to count number of ones (1s) in an integer variable input. For example: Input x=2200112231 output y=3 I...

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Return the Fibonacci Sequence
Write a code which returns the Fibonacci Sequence such that the largest value in the sequence is less than the input integer N. ...

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Building matrices
If you have matrix A, create matrix B using matrix A as an "element" A = [1 2 3 4; 5 6 7 8...

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Number of Circles in a Number
Given a number, return the number of closed 'circles' in the base 10 numerical representation. Note: the number 4 has no circ...

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Solve t^(a*x^2+b*x+c)=s
Solve t^(a*x^2+b*x+c)=s. Return x vector as result. Example a=1, b=2, c=1, t=3, s=15. Result x(1)= 0.5700 x(2)=-2.5700 H...

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Find product of eigenvalues of n*n magic matrix.
Find product of eigenvalues of n*n magic matrix. Example n=3 Matrix= [ 8 1 6; 3 5 7; 4 ...

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merge two matrices together in one matrix
a= [1 2 3 4]; b=[5 6 7 8]; take the first column from matrix (a)and (b)then insert them in matrix (c) respectively, and so on;...

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'Repeat!'
if matrix x=[1 2;3 4] y should be [1 2 1 2; 3 4 3 4; 1 2 1 2; 3 4 3 4;............],repeat n times! try this!

quasi 10 anni fa

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0, 2, 0, -2, 0, 2, 0, -2, ...
Generate the first n terms of a periodic sequence defined as f(x) = 0, 2, 0, -2, 0, 2, 0, -2, ..., for x = 1, 2, 3, 4, 5, 6...

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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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Spiral Matrix
for a given integer n>=3, generate a matrix of nxn such that the value n^2 is at bottom left and its decreasing towards center ...

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Negative Infinity
Round the given array a towards negative infinity.

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Make one big string out of two smaller strings
If you have two small strings, like 'a' and 'b', return them put together like 'ab'. 'a' and 'b' => 'ab' For extra ...

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Lightning strike distance: Writing a function
Write a function named LightningDistance that outputs "distance" given input "seconds". Seconds is the time from seeing lightnin...

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How to find the position of an element in a vector without using the find function
Write a function posX=findPosition(x,y) where x is a vector and y is the number that you are searching for. Examples: fin...

quasi 10 anni fa

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Sum of digits of powers of 2
Given n, first, calculate the number 2^n. Then, sum the digits that comprise that number. For example: Input: n = 7 2^n = ...

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Reverse digits of a number
Reverse digits of a number. For example, return *321* for the input *123* . The left-hand zeros can be discarded. For exam...

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Vector Multiplication
Vector Multiplication of three matrix as shown in test cases.

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Calculate correlation.
There are two data. y1=[0 1 2 3 4]' y2=[2 3 4 5 6]' We can see positive relationship between y1 and y2. The relations...

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generate number in particular way
A = [1 5 2 7]; MAX = 10; generate a array Y = [1 2 2 2 2 2 3 3 4 4]; i.e. total eleme...

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Find the mode of the given input
Find the statistical <http://en.wikipedia.org/wiki/Mode_(statistics)/ mode> of the given input. Example: If X is matr...

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Find the rank of a matrix
Determine the rank of a matrix without using the MATLAB function of the same name.

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Find 10's complement
Find 10's complement of a given number. An example is <http://electrical4u.com/9s-complement-and-10s-complement/ shown here>.

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How many digits are there?
Input(s) - any string Output(n) - number of digits within string s

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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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Make a vector of prime numbers
Input(n) - length of vector with prime numbers Output(v) - vector of prime numbers Example: * n=1; v=2 * n=3; v=[2 3 5...

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Number of odd and even elements within matrix
Input(m) - any matrix with integers Output(n) - n(1)=number of odd elements, n(2)=number of even elements Example: * m=...

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Find scalar product of two polynomials a and b, given as vector array.
Find scalar product of two polynomials given as vector array. Example a=[1 -1 2]; b=[2 4 1]; result=0

quasi 10 anni fa