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# Francisco

##### Last seen: etwa 2 Monate ago

445 total contributions since 2015

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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 ...

mehr als ein Jahr ago

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Remove the air bubbles
Given a matrix a, return a matrix b in which all the zeros have "bubbled" to the top. That is, any zeros in a given column shoul...

mehr als ein Jahr ago

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Find the nearest prime number
Happy 5th birthday, Cody! Since 5 is a prime number, let's have some fun looking for other prime numbers. Given a positive in...

mehr als ein Jahr ago

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

mehr als ein Jahr ago

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The 5th Root
Write a function to find the 5th root of a number. It sounds easy, but the typical functions are not allowed (see the test su...

mehr als ein Jahr ago

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Basic electricity in a dry situation
&#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#9889 &#...

mehr als 2 Jahre ago

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Extra safe primes
Did you know that the number 5 is the first safe prime? A safe prime is a prime number that can be expressed as 2p+1, where p is...

mehr als 2 Jahre ago

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Pentagonal Numbers
Your function will receive a lower and upper bound. It should return all pentagonal numbers within that inclusive range in ascen...

mehr als 2 Jahre ago

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Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.
Submit your answer to this problem a multiple of 5 seconds after the hour. Your answer is irrelevant; the only thing that matte...

mehr als 2 Jahre ago

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Pernicious Anniversary Problem
Since Cody is 5 years old, it's pernicious. A <http://rosettacode.org/wiki/Pernicious_numbers Pernicious number> is an integer w...

mehr als 2 Jahre ago

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Energy of a photon
*&#9883 &#9762 &#9883 &#9762 &#9883 &#9762 &#9883* Given the frequency F of a photon in giga hertz. Find energy E of this...

mehr als 2 Jahre ago

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How to subtract?
*&plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn &plusmn* * Imagine you need to subtract one...

mehr als 2 Jahre ago

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CONVERT TAN TO SIN
In a right angle triangle ABC given the tan(A) then find sin(A) For example tan(A)=3/4 then sin(A)=3/5

etwa 3 Jahre ago

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Determine the square root
Determine the square root of the value the user has entered, n.

etwa 3 Jahre ago

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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.

mehr als 3 Jahre ago

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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];

mehr als 3 Jahre ago

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

mehr als 3 Jahre ago

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Flipping
Write code that can reverse the vector without using any sort of loop. Example Given the input vector A = [ 1 2 3 4 5...

mehr als 3 Jahre ago

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Reverse a matrix
Its simple. You have to reverse a given matrix.

mehr als 3 Jahre ago

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Cannon Ball
Given g (acceleration due to gravity) and desired altitude x, find the minimum ground velocity of a cannon ball to reach x.

mehr als 3 Jahre ago

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

mehr als 3 Jahre ago

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Find the hypotenuse
Given a and b (the two sides of a right-triangle), find c, the hypotenuse.

mehr als 3 Jahre ago

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Binary Coder
Take an input number and print the binary value of this number.

mehr als 3 Jahre ago

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Half?
If you toss an even number (x) of coins, what is the probability (y) of 50% head and 50% tail?

mehr als 3 Jahre ago

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Woodall number
Test whether the input is a Woodall number: <http://en.wikipedia.org/wiki/Woodall_number> _Please do not cheat by simply chec...

mehr als 3 Jahre ago

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Given a matrix, return the last eigen value
Given a matrix, return the first eigen value For example: x = magic(5) 17 24 1 8 15 23 5 7 14 ...

mehr als 3 Jahre ago

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Given a 4x4 matrix, swap the two middle columns
If a = [1 2 3 4; 1 2 3 4; 1 2 3 4; 1 2 3 4]; then the result is ans = 1 3 2 4 1 3 2...

mehr als 3 Jahre ago

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

mehr als 3 Jahre ago

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Count up then down
Create a function that produces counting up from 0 up to n then down to 0 n=2 --> 0 1 2 1 0 n=3 --> ...

mehr als 3 Jahre ago

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