![photo](/responsive_image/150/150/0/0/0/cache/matlabcentral/profiles/6241167_1522112792503_DEF.jpg)
Francisco Salema
自 2015 起处于活动状态
Followers: 0 Following: 0
Feeds
提问
Matlab open figure performance
Hey there, I reinstalled Matlab today in my computer, and i was noticing a very low speed just to open a normal figure, even wi...
7 years 前 | 0 个回答 | 0
0
个回答提问
How can I isolate objects in image?
Hello, I have an image that contains some chickens photographed from a top view, and I would like to count them through a Matlab...
8 years 前 | 2 个回答 | 1
2
个回答已解决
Number of nonzero elements in matrix
Calculate the number of nonzero elements for given matrix
8 years 前
已解决
Counting candies
In a classroom of |'n'| children, every even numbered child gets one big candy and every odd numbered child gets two small candi...
8 years 前
已解决
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...
9 years 前
已解决
Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.
9 years 前
已解决
Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...
9 years 前
已解决
Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...
9 years 前
已解决
Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...
9 years 前
已解决
Project Euler: Problem 1, Multiples of 3 and 5
If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23...
9 years 前
已解决
Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...
9 years 前
已解决
Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...
9 years 前
已解决
Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...
9 years 前
已解决
Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...
9 years 前
已解决
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...
9 years 前
已解决
Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...
9 years 前
已解决
Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...
9 years 前
已解决
Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...
9 years 前
已解决
Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...
9 years 前
已解决
Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...
9 years 前
已解决
Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...
9 years 前
已解决
Determine if input is odd
Given the input n, return true if n is odd or false if n is even.
9 years 前
已解决
Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...
9 years 前
已解决
Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...
9 years 前
已解决
Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...
9 years 前