解決済み

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)).

7年弱前

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Replicate elements in vectors
Replicate each element of a row vector (with NaN) a constant number of times. Examples n=2, A=[1 2 3] -> [1 1 2 2 3 3] ...

7年弱前

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Number of Horns on a unicorn!
Calculate the number of horns on a *unicorn*! And I'm talking about a unicorn with not more than one horn on it!

7年弱前

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vectorization in N
For a given integer n (n>1), compute the sum f (i) (1 <= i <= n) where f (i) = 1 if n is odd and 2 otherwise.

7年弱前

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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...

7年弱前

解決済み

Matlab Basics II - Minimum
Write a function that returns the minimum of each ROW of a matrix x example: x = [1 2 3; 4 5 6]; output [1;4];

7年弱前

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Derivative of polynomial
Compute the derivative of a given polynomial. The input is an <http://www.mathworks.com/help/matlab/math/representing-polynomial...

7年弱前

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Create incrementing array
Given a and b generate an output matrix as shown in following examples: a=2 b=5 output=[2 20 200 2000 20000] a=4 b...

7年弱前

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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.

7年弱前

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Remove NaN ?
input -> matrix (n*m) with at least one element equal to NaN; output -> matrix(p*m), the same matrix where we deleted the enti...

7年弱前

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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

7年弱前

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Specific Element Count
Given a vector _v_ and a element _e_, return the number of occurrences of _e_ in _v_. Note: NaNs are equal and there may be n...

7年弱前

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Given a window, how many subsets of a vector sum positive
Given a vector: [1 0 -1 3 2 -3 1] and a window of 2, A sliding window would find: 1 + 0 = 1 0 - 1 = -1 ...

7年弱前

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Scrabble Scores
Given a word, determine its score in <http://en.wikipedia.org/wiki/Scrabble Scrabble>. The input string will always be provi...

7年弱前

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Beginner's Problem - Squaring
Try out this test problem first. Given the variable x as your input, square it by two and put the result in y. Examples: ...

7年弱前

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Generate a NaN...on purpose
The goal is to create a function that will return a single "NaN" without using the nan function. I am interested to see how many...

7年弱前

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Distance walked 3D
suppose you go from x-y-z coordinates [3,4,2] to [0,0,2] to [0,1,2] to [1,1,2], to [1,1,20] then you walked 25 units of distance...

7年弱前

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Finding perimeter of a rectangle
A rectangle has a length of x centimeters and a width of w centimeters. Find the perimeter.

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Calculate volume of box
Calculate the volume of box,hiven its sides

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square root
Find the square root (y) of an input (x).

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Who invented zero?
We know the importance zero in computer science, mathematics... but who invented zero? Clue: He was the first in the line ...

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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 ...

7年弱前

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If-then-else
Complete the function below such that if the value of x is in the range 10 to 14, inclusive, the value 18 is assigned to y. Oth...

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No Twins?
Write a function that accepts as input a vector and returns the same vector, but retaining only the first occurrence of an eleme...

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Check if equal
Return true if all the elements of an nD array are equal, false otherwise.

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Times 3 problem
When you enter the number, it should return the number multiplied by 3

7年弱前

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Matlab Basics II - Log and natural log
Write a function that calculates the difference between the log and natural log of a vector, to two decimal places example: ...

7年弱前

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Sum of the Multiplication of Vectors
Given the vectors x and y as input, multiply the vectors and return the summation of its elements. Example: x = [1 2 ...

7年弱前

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Matlab Basics - Switching Assignments
Switch assignments for variables x and y, for example start with x = 1 and y = 3 end with y = 1 and x = 3 Do NOT simply r...

7年弱前

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Finding an element in a vector
x is a vector of unknown length your function should return the index of the first element in the vector that is greater than...

7年弱前