David K

Last seen: 7 days ago | Active since 2015

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I spend a lot of time in MATLAB, with my focus on signal processing and data analysis.

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Draw a '4' in a zero matrix!

6 months ago

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Draw a '6' in a zero matrix!

6 months ago

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Draw a '9' in a zero matrix!

6 months ago

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Draw a '7' in a zero matrix!

6 months ago

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Draw a '8' in a zero matrix!

6 months ago

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Draw a '3' in a zero matrix!

6 months ago

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Draw a '2' in a zero matrix!

6 months ago

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Draw a '5' in a zero matrix!

6 months ago

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Find x rows where the sum of the numbers is the maximum
Find x rows where the sum of the numbers is the maximum. For example: when x is 2 and m is 2 3 5 0 2 3 5 5 6 0 9 4 then y =...

6 months ago

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Draw a '1' in a zero matrix!

6 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...

6 months ago

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Rotate Matrix @180 degree
Rotate Matrix @180 degree Example A=[8 1 6; 3 5 7; 4 9 2], then answer would be [2 9 4;...

6 months ago

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Converts numbers into characters
Converts numbers into characters

6 months ago

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

6 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.

6 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

6 months ago

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to the 2 all elements
to the 2 all elements

6 months ago

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

6 months ago

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

6 months ago

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

6 months ago

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Draw a '0' in a one matrix!

6 months ago

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The Piggy Bank Problem
Given a cylindrical piggy bank with radius g and height y, return the bank's volume. [ g is first input argument.] Bonus though...

2 years ago

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Number of Even Elements in Fibonacci Sequence
Find how many even Fibonacci numbers are available in the first d numbers. Consider the following first 14 numbers 1 1 2...

3 years ago

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Recaman Sequence - III
I want to create a Recaman sequence where there is a "1" in the n-th position. So from which integer should I start the Recaman ...

3 years ago

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Recaman Sequence - II
Take an arbitrary starting point as input and create Recaman Sequence. Then find the 1, return its index. For example: if n =...

3 years ago

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Recaman Sequence - I
Recaman Sequence (A005132 - <http://oeis.org/A005132 - OEIS Link>) is defined as follow; seq(0) = 0; for n > 0, seq(n) ...

3 years ago

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Sums of Multiple Pairs of Triangular Numbers
This is a follow-up to <https://www.mathworks.com/matlabcentral/cody/problems/44289 Problem 44289> - Find two triangular numbers...

3 years ago

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Van Eck's Sequence's nth member
Return the Van Eck's Sequence's nth member. For detailed info : <http://oeis.org/A181391 OEIS link> and <https://www.theguard...

3 years ago

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Write c^3 as sum of two squares a^2+b^2
write c^3 as sum of two squares a^2+b^2. a and b must be integer and greater than zero. For example 5^3 = 2^2 + 11^2 5...

3 years ago

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Predicting life and death of a memory-less light bulb
*&#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &#128161 &...

3 years ago

David K

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