磊王

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Numbers with prime factors 2, 3 and 5.
Make a function which takes one positive integer n and returns a matrix with the numbers of the form (2^i)*(3^j)*(5^k) which are...

2 months ago

Solved

Find vampire numbers
A vampire number is a number v that is the product of two numbers x and y such that the following conditions are satisfied: at ...

2 months ago

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Proper Factors
Generate the proper factors of input integer x and return them in ascending order. For more information on proper factors, refer...

2 months ago

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Multiples of a Number in a Given Range
Given an integer factor _f_ and a range defined by _xlow_ and _xhigh_ inclusive, return a vector of the multiples of _f_ that fa...

2 months ago

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Find out next state (NS) of T Flip-Flop.
Find out next state (NS) of T Flip-Flop based on previous state (PS), inputs. Learn more about T Flip-Flop theory here: <htt...

8 months ago

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Find the next state of a JK Flip-Flop
Find the next state (NS) of a JK Flip-Flop based on previous state (PS), inputs. Learn more about JK Flip-Flop theory here: ...

8 months ago

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Find the starting index of a consecutive condition
Given a logical vector |v|, and a positive integer |n|, return the smallest index |i| that satisfies: all( v(i : i+n-1) ) =...

8 months ago

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Is this number Munchhausen?
In this problem, simply return 1 if a supplied number is Munchhausen or 0 if not. Example 153 is narcissistic but not a Munchh...

8 months ago

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Find the 9's Complement
Find the 9's complement of the given number. An example of how this works is <http://electrical4u.com/9s-complement-and-10s-c...

8 months ago

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Smith numbers
Return true if the input is a Smith number in base ten. Otherwise, return false. Read about Smith numbers at http://en.wikipedia...

8 months ago

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The Top 5 Primes
This problem series invites you to solve two simple problems related to the integer NUMBER FIVE, in order to celebrate <https://...

8 months 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 photon...

8 months ago

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Spot the rectangle (Part 2)
This problem is related to the 17x17 challenge. See also Part 1 of this problem. Given a matrix in which each element is either ...

9 months ago

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Spot the rectangle
This problem is related to the 17x17 challenge. Given a matrix filled with ones and zeros, determine whether or not any rectangl...

9 months ago

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Find my birthday
Given a birth date x, find my age when my birth day will fall on the same day as I was born. So if I was born on Monday, what ag...

9 months ago

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Get an array of month-ends in a date range
Create a function that would return a list of month-ends falling in a given date range. If a start date or end date falls on a...

9 months ago

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Pell numbers
Find the nth pell number <https://en.wikipedia.org/wiki/Pell_number>

9 months ago

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Quote Doubler
Given a string s1, find all occurrences of the single quote character and replace them with two occurrences of the single quote ...

9 months ago

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How many Christmas presents under the tree?
For many families at Christmas, each family member gives 1 present to every other family member. The main exception is that chil...

9 months ago

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Is A the inverse of B?
Given a matrix A and a matrix B, is A the inverse of B? >>A=[2,4;3,5]; >>B=[-2.5,2;1.5,-1]; >>isInverse...

9 months ago

Solved

Converts numbers into characters
Converts numbers into characters

9 months ago

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Find the max element of the array
Find the max element of the array

9 months ago

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Square root
Given x (a matrix), give back another matrix, where all the elements are the square roots of x's elements.

9 months ago

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Calculate the average value of the elements in the array
Calculate the average value of the elements in the array

9 months ago

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to the 2 all elements
to the 2 all elements

9 months ago

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the average value of the elements
Calculate the average value of the elements in the array

9 months ago

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Double all elements in the array
Duplicate all elements in the array

9 months ago

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calculate the length of matrix
input 1 array, calculate the length

9 months ago

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Don't be mean. Be nice!
For this problem, you will be given a range of single digits R, and a separate number K. You job is to calculate the mean of al...

9 months ago

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Given n, create n random numbers such that their standard deviation is also n.
Given n, create n random numbers such that their standard deviation is also n.

9 months ago

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