A résolu


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 : ...

environ 14 ans il y a

A résolu


Borderline Connectivity
Compute the connected components of pixel borders. Suppose that h and v together describe a logical labeling of the borders b...

environ 14 ans il y a

A résolu


Rotate a Matrix by 90 degrees
Rotate a Matrix by 90 degrees Example: If the input is: X = 1 2 3 4 5 6 7 8 9 ...

environ 14 ans il y a

A résolu


What digit is it?
The function you are being asked to write will take three numbers (n,x,q) as input. The object of the function is to determine ...

environ 14 ans il y a

A résolu


Tell me the slope
Tell me the slope, given a vector with horizontal run first and vertical rise next. Example input: x = [10 2];

environ 14 ans il y a

A résolu


Crypto Addition - v01
Crypto addition is solving for the numeric values of the characters given in an addition equation: abc 756 +def ...

environ 14 ans il y a

A résolu


Longest run of consecutive numbers
Given a vector a, find the number(s) that is/are repeated consecutively most often. For example, if you have a = [1 2 2 2 1 ...

environ 14 ans il y a

A résolu


Remove DC
Input x is the sampled signal vector, may have both AC and DC components. Output y should not contain any DC component. Examp...

environ 14 ans il y a

A résolu


Put two time series onto the same time basis
Use interpolation to align two time series onto the same time vector. This is a problem that comes up in <http://www.mathwork...

environ 14 ans il y a

A résolu


Vectorize the digits of an Integer
Create a vector of length N for an integer of N digits. x=123045; x_vec=[1 2 3 0 4 5]; I happened upon a trick to do ...

environ 14 ans il y a

A résolu


Getting the absolute index from a matrix
This is a basic MATLAB operation. It is for instructional purposes. --- You may already know how to get the <http://www.ma...

environ 14 ans il y a

A résolu


Return the first and last character of a string
Return the first and last character of a string, concatenated together. If there is only one character in the string, the functi...

environ 14 ans il y a

A résolu


Convert a vector into a number
This is a sub problem related to this problem: <http://www.mathworks.com/matlabcentral/cody/problems/621-cryptomath-addition>...

environ 14 ans il y a

A résolu


Compute a dot product of two vectors x and y
x and y are input vectors, d is a number and contains their dot product

environ 14 ans il y a

A résolu


Cryptomath: Addition
W A I T + A L L --------- G I F T S equals: 9 6 0 8 + 6 7 7 --------- 1 0 2 8 5 Given str...

environ 14 ans il y a

A résolu


Multiply a column by a row
* Given a column vector C and and a row vector R. * Output a matrix M. * Every column of M equals to C multiplied by correspon...

environ 14 ans il y a

A résolu


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...

environ 14 ans il y a

A résolu


Solve the Sudoku Row
*Description* A simple yet tedious task occurs near the end of most Sudoku-solving algorithms, computerized or manual. The ta...

environ 14 ans il y a

A résolu


Program an exclusive OR operation with logical operators
Program an exclusive or operation *without* using the MATLAB function xor. Use logical operators like |, &, ~, ... instead. ...

environ 14 ans il y a

A résolu


Whether the input is vector?
Given the input x, return 1 if x is vector or else 0.

environ 14 ans il y a

A résolu


surrounded matrix
With a given matrix A (size m x n) create a matrix B (size m+2 x n+2) so that the matrix A is surrounded by ones: A = [1 2 ...

environ 14 ans il y a

A résolu


Is the Point in a Triangle?
Check whether a point or multiple points is/are in a triangle with three corners Points = [x, y]; Triangle = [x1, y1; x...

environ 14 ans il y a

A résolu


"Look and say" sequence
What's the next number in this sequence? * [0] * [1 0] * [1 1 1 0] * [3 1 1 0] * [1 3 2 1 1 0] This a variant on the w...

environ 14 ans il y a

A résolu


Is this matrix orthogonal?
Given a square matrix, a, determine whether it is orthogonal. INPUT: a, a n x n matrix OUTPUT: true or false

environ 14 ans il y a

A résolu


Find the sum of the elements in the "second" diagonal
Find the sum of the elements in the diagonal that starts at the top-right corner and ends at the bottom-left corner.

environ 14 ans il y a

A résolu


Function composition - harder
Write a function that accepts an arbitrary number of function handles f_1, f_2, ..., f_n and returns the composition h. That is,...

environ 14 ans il y a

A résolu


Create a patchwork matrix
This function will assemble a large matrix out of a number of smaller ones m1, m2, etc., according to a pattern P. If P is 3x5,...

environ 14 ans il y a

A résolu


Spiral In
Create an m by n matrix filled with sequential integers starting from 1 and arranged in a counterclockwise spiral that hugs the ...

environ 14 ans il y a

A résolu


Matrix indexing with two vectors of indices
Given a matrix M and two index vectors a and b, return a row vector x where x(i) = M(a(i),b(i)).

environ 14 ans il y a

A résolu


Elapsed Time
Given two date strings d1 and d2 of the form yyyy/mm/dd HH:MM:SS (assume hours HH is in 24 hour mode), determine how much time, ...

environ 14 ans il y a

Charger plus