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Sum of the Matrix Elements
Add up all the elements in a NxM matrix where N signifies the number of the rows and M signifies the number of the columns. E...

circa 9 anni fa

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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. Examp...

circa 9 anni fa

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Equal to their cube
Tell me three real numbers that are equal to their cubes?

circa 9 anni fa

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Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

circa 9 anni fa

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Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

circa 9 anni fa

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Solve the set of simultaneous linear equations
Given this pair of simultaneous linear equations: 2x + 3y = 23 3x + 4y = 32 Find the solution set (x,y)

circa 9 anni fa

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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...

circa 9 anni fa

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First N Perfect Squares
*Description* Return the first N perfect squares *Example* input = 4; output = [ 1 4 9 16 ];

circa 9 anni fa

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What number has this problem?
This problem is added because it is problem number *???* in the "Community" problems section. <http://www.mathworks.de/matlab...

circa 9 anni fa

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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...

circa 9 anni fa

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Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

circa 9 anni fa

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Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

circa 9 anni fa

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Is my wife right?
Regardless of input, output the string 'yes'.

circa 9 anni fa

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Make a random, non-repeating vector.
This is a basic MATLAB operation. It is for instructional purposes. --- If you want to get a random permutation of integer...

circa 9 anni fa

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Right and wrong
Given a vector of lengths [a b c], determines whether a triangle with those sides lengths is a right triangle: <http://en.wikipe...

circa 9 anni fa

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Detect a number and replace with two NaN's
Write code which replaces the number 1 with two NaNs. Example X = [ 1 2 NaN 4 1 3 7 NaN 1 4 NaN 2] ...

circa 9 anni fa

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convert matrix to single column
given any matrix, convert it to single column

circa 9 anni fa

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Dimensions of a rectangle
The longer side of a rectangle is three times the length of the shorter side. If the length of the diagonal is x, find the width...

circa 9 anni fa

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Logic variables
* Assign isAvailable with true.

circa 9 anni fa

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

circa 9 anni fa

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Rounding
Round 10.67 and make 'y' equal to that number.

circa 9 anni fa

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Generate a vector like 1,2,2,3,3,3,4,4,4,4
Generate a vector like 1,2,2,3,3,3,4,4,4,4 So if n = 3, then return [1 2 2 3 3 3] And if n = 5, then return [1 2 2...

circa 9 anni fa

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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...

circa 9 anni fa

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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 ...

circa 9 anni fa

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Check if number exists in vector
Return 1 if number _a_ exists in vector _b_ otherwise return 0. a = 3; b = [1,2,4]; Returns 0. a = 3; b = [1,...

circa 9 anni fa

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Divide by 4
Given the variable x as your input, divide it by four and put the result in y.

circa 9 anni fa

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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.

circa 9 anni fa

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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...

circa 9 anni fa

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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...

circa 9 anni fa

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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:...

circa 9 anni fa