Resuelto

Sorting integers by their digits (Level 2)
This is the next step up from <http://www.mathworks.com/matlabcentral/cody/problems/42809-sorting-integers-by-their-digits Probl...

casi 3 años hace

Resuelto

Sorting integers by their digits (Level 1)
Given a vector, v, of positive integers, return a vector, w, by sorting v in ascending order, such that primary sorting is done ...

casi 3 años hace

Resuelto

Make an awesome ramp for a tiny motorcycle stuntman
Okay, given a vector, say v=[1 3 6 9 11], turn it into a matrix 'ramp' like so: m=[1 3 6 9 11; 3 6 9 11 0; 6 9 ...

casi 3 años hace

Resuelto

remove single elements
Given a vector of integers, remove the elements that have appeared only once. The output elements should be in exact order as th...

casi 3 años hace

Resuelto

Max Change in Consecutive Elements
If an array is given as input then find the index of consecutive elements that represent maximum change. Example: Input ...

casi 3 años hace

Resuelto

Tridiagonal
Return an n-by-n matrix that has a, b, c as the subdiagonal, main diagonal, and superdiagonal entries in the matrix. Example ...

casi 3 años hace

Resuelto

Find the maximum two numbers of every column of a matrix
Find the maximum two numbers of every column of a matrix. Example: If we input a matrix A = [ 1 2 4 6 0 3 ...

casi 3 años hace

Resuelto

How unique?
Sometimes, when we check unique entries of vector we would like to know how many times each value occurs. Given vector of num...

casi 3 años hace

Resuelto

Replace pattern 0 1 0 and 1 0 1
Find and replace a pattern in a row of zeroes and ones. * Find 1 0 1 and replace it with 1 1 1 * Find 0 1 0 and replace it w...

casi 3 años hace

Resuelto

Time Expansion
How can you slow down any discrete-time signal? Example Input original signal x. x = [1 2 3 -1 -2 -5 -4] We want t...

casi 3 años hace

Resuelto

Boustrophedon
Given a vector v and a positive integer n, return an m-by-n matrix containing the elements of v row-wise, alternating left-to-ri...

casi 3 años hace

Resuelto

Create block matrix of integers (j+k-1) - Part I
Given m, n, p, and q, create a matrix of m-by-n blocks (submatrices), each sized p-by-q. The elements of the (j,k)th block all h...

casi 3 años hace

Resuelto

Determine if Input is Oddish or Evenish (Odd/Even Sum of Digits)
Given a positive integer n, determine whether n is "oddish" or "evenish" - that is, whether the sum of the digits of n is odd or...

casi 3 años hace

Resuelto

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...

casi 3 años hace

Resuelto

Matrix with different incremental runs
Given a vector of positive integers a = [ 3 2 4 ]; create the matrix where the *i* th column contains the vector *1:a(i)...

casi 3 años hace

Resuelto

Set some matrix elements to zero
First get the maximum of each *row*, and afterwards set all the other elements to zero. For example, this matrix: 1 2 3 ...

casi 3 años hace

Resuelto

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 ...

casi 3 años hace

Resuelto

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 ...

casi 3 años hace

Resuelto

Convert binary numbers array into array of decimal numbers.
Convert binary numbers array into array of decimal numbers. Example x=[ 11001000 ; 11001001 ; 11001010 ; 11001011 ; 11001100 ;...

casi 3 años hace

Resuelto

Flip the bit
Given an input character string (e.g. '1001'), return a character string with the bits flipped ('0110').

casi 3 años hace

Resuelto

Read a column of numbers and interpolate missing data
Given an input cell array of strings s, pick out the second column and turn it into a row vector of data. Missing data will be i...

casi 3 años hace

Resuelto

Return a list sorted by number of occurrences
Given a vector x, return a vector y of the unique values in x sorted by the number of occurrences in x. Ties are resolved by a ...

casi 3 años hace

Resuelto

Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

casi 3 años hace

Resuelto

Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

casi 3 años hace

Resuelto

ASCII sum of phrases
Find the sum of the numeric equivalents of all characters entered in a phrase. For example: for the phrase 'My name is test', th...

casi 3 años hace

Resuelto

Back to basics - mean of corner elements of a matrix
Calculate the mean of corner elements of a matrix. e.g. a=[1 2 3; 4 5 6; 7 8 9;] Mean = (1+3+7+9)/4 = 5

casi 3 años hace

Resuelto

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 ...

casi 3 años hace

Resuelto

Return the largest number that is adjacent to a zero
This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

casi 3 años hace

Resuelto

Sum of odd numbers in a matrix
Find the sum of all the odd numbers in a matrix. Example x = [2 3 5 7 1 4 11] y = 27

casi 3 años hace

Resuelto

Cell joiner
You are given a cell array of strings and a string delimiter. You need to produce one string which is composed of each string fr...

casi 3 años hace