625 total contributions since 2012

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Determine the length of a string of characters

Determine the length of a string of characters

7 years ago

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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...

7 years ago

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Area of an equilateral triangle

Calculate the area of an equilateral triangle of side x. <<http://upload.wikimedia.org/wikipedia/commons/e/e0/Equilateral-tr...

7 years ago

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Length of the hypotenuse

Given short sides of lengths a and b, calculate the length c of the hypotenuse of the right-angled triangle. <<http://upload....

7 years ago

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Is this triangle right-angled?

Given three positive numbers a, b, c, where c is the largest number, return *true* if the triangle with sides a, b and c is righ...

7 years ago

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Create a row array using double colon operator

Create a row array from 9 to 1, using the double colon operator.

7 years ago

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Circle area using pi

Given a circle's radius, compute the circle's area. Use the built-in mathematical constant pi.

7 years ago

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Weave two vectors into one

Weave the two given vectors into one as shown below. Example: If a = [1 1 1] b = [0 0 0] then y = [1 0 1 0 ...

8 years ago

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Simple equation: Annual salary

Given an hourly wage, compute an annual salary by multiplying the wage times 40 and times 50, because salary = wage x 40 hours/w...

8 years ago

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sum of first 'n' terms

Given n=10, find the sum of first 'n' terms Example: If n=10, then x=1,2,3,4,5,6,7,8,9,10. The sum of these n=10 terms is 55...

8 years ago

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Lightning strike distance: Writing a function

Write a function named LightningDistance that outputs "distance" given input "seconds". Seconds is the time from seeing lightnin...

8 years ago

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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...

8 years ago

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What percentage?

Calculate the output c as the percentage of a on b for given a and b.

8 years ago

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Kurchan Square - Evaluation Function

Evaluate a Kurchan square. An NxN square with values 1:N^2. Given a square matrix determine the products of each row, column,...

8 years ago

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Relative ratio of "1" in binary number

Input(n) is positive integer number Output(r) is (number of "1" in binary input) / (number of bits). Example: * n=0; r=...

8 years ago

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Frobenius Norm

Write your own version of Frobenius Norm without using the 'norm' function.

8 years ago

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Finding peaks

Find the peak values in the signal. The peak value is defined as the local maxima. For example, x= [1 12 3 2 7 0 3 1 19 7]; ...

8 years ago

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Try 1.5.4: Celsius to Fahrenheit

Write a program to convert an input given in Celsius to Fahrenheit. Examples: Input celsiusValue = 100 Output fahrValu...

8 years ago

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Perl 4: unshift

_This is part of a series of perl function which were very helpful for many perl programmers. Could you implement it in Matlab?_...

8 years ago

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Number of digits in an integer

Specifies how many digits in a given integer. Example: in=100 ==> out=3

8 years ago

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Change the sign

Given a matrix x, return one with each diagonal element replaced by its absolute value, and each off-diagonal element replaced b...

8 years ago

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Perl 3: shift

_This is part of a series of perl function which were very helpful for many perl programmers. Could you implement it in Matlab?_...

8 years ago

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Perl 2: pop

_This is part of a series of perl function which were very helpful for many perl programmers. Could you implement it in Matlab?_...

8 years ago

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Perl 1: push

_This is part of a series of perl function which were very helpful for many perl programmers. Could you implement it in Matlab?_...

8 years ago

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Find the function

Given a set of point (x,y) and the coordinate x of a new point, find the y value of new point.

8 years ago

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Duplicate a character

Duplicate a character 'n' times. Example 1: str='a' n=5 output='aaaaa' Example 2: str='*' n=3 output='***'

8 years ago

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Method of Common Differences part-1

Use the method of common differences to output a vector containing the initial values and the nth order difference. ex ...

8 years ago

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Mode

Find the mode of the vector Assumption: no vector is bimodal Example 1: input=[1 2 3 4 4]; output=4 Example 2: input=[7...

8 years ago