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3 years ago

Solved

Compute the intersect point of line and plan
Compute the intersect point of line and plan. eg. line AB, the coordinate of A is (1,2,3) the coordinate of B is (-4,-5,-6...

3 years ago

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Solve a ballot counting problem

3 years ago

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Adaptive ZigZag
Unfold a 2-D matrix to a 1-D array in Adaptive zig-zag order, e.g., for matrix [ 1 2 5 6; 3 4 7 8; 9 10 13 14; ...

3 years ago

Solved

GJam 2017 Kickstart: Leader (Large)
This Challenge is derived from <http://code.google.com/codejam/contest/6304486/dashboard#s=p0 GJam 2017 Kickstart Leader>. This ...

3 years ago

Solved

GJam 2017 Kickstart: Vote (Small)
This Challenge is derived from <http://code.google.com/codejam/contest/6304486/dashboard#s=p1 GJam 2017 Kickstart Vote>. This is...

3 years ago

Solved

Sort Reversal
There are n index cards in a row, with n distinct integers written on them (one number per card) so that the numbers are sorted ...

3 years ago

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Fun with permutations
There are factorial(N) permutations of the numbers from 1 to N. For each of these permutations, we can find the set of indexes j...

3 years ago

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Pixel density
<https://en.wikipedia.org/wiki/Pixel_density Pixel density> tells us how many pixels we can find within a unit of length. And a...

3 years ago

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how to concatenate matrices
What is the name of the function used to create a matrix C form two matrices A and B, using the syntax: C = [A B]; Outpu...

3 years ago

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Find out base of following arithmetic operation
Find out base of the following arithmetic operation. So for example 41/3=13 is true in base 8. Another example: 23+44+14...

3 years ago

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Inscribe a circle in a triangle with a side of length equal to the circle’s circumference
A circle of radius is inscribed in a triangle with a side that has a length equal to the circle’s circumference. The center of ...

3 years ago

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nanoseconds passed today
Calculate the amount of nanoseconds passed in the current day of a certain date string.

3 years ago

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Maya long Count
Given a Mayan date, calculate the number of days after the end of the last Great Cycle. <https://en.wikipedia.org/wiki/Maya_c...

3 years ago

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Moving Median Absolute Deviation
The median absolute deviation (MAD) is defined as MAD = median(abs(A − median(A))) for a rolling window of length n. For examp...

3 years ago

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lucky
check whether n is a lucky number <https://oeis.org/A000959>

3 years ago

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How lucky r u ?
Find the nth number in the following sequence <https://oeis.org/A264940>

3 years ago

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Area-05
The dimension of a rectangle is given. There are two circles of equal size that are inscribed inside it.The circles are tangent ...

3 years ago

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Take it out
Consider the integer number sequence N (1 to infinity). After each iteration, take out the (k+1)th elements; where k is the n...

3 years ago

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self description 2.0
New (and way easier) hacking problem built upon <http://www.mathworks.com/matlabcentral/cody/problems/1969 Alfonso's problem 196...

3 years ago

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Easy Sequences 105: One-line Code Challenge - IPv4 Address Validation
The Internet Protocol version 4 (IPv4) is the dominant protocol for routing devices over the internet. IPv4 addresses are usuall...

3 years ago

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Gaussian elimination
Get the Gussian elimination of the Matrix Given You cannot use built-in Matlab functions triu :)

3 years ago

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Just take it easy for a second or two!
Your code needs to take 'exactly' one second or 'exactly' two seconds to run (depending on the input) — accurate to ±0.5 millise...

3 years ago

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Wait a second!
Your code needs to take 'exactly' one second to run — accurate to ±0.5 milliseconds. The input will be the number of millis...

3 years ago

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Roman numbers: how old is that building?
The front of old buildings sometimes show the year when they were built in roman numbers. These number are rather confusing and ...

3 years ago

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Get top 5 Cody Player Emails Automatically
Yes, this is a little scary and also entirely possible to do in MATLAB, so let's do it! Looking at the list of the players <h...

3 years ago

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Identify de Polignac numbers
The numbers 125 and 329 can be written as the sum of a prime and a power of 2. For example, , and . The numbers 127 and 331, whi...

3 years ago

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Swap Red and Blue

3 years ago

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Encoding Google Maps Polylines
This problem is based on the Google Polyline Encoder algorithm. This is how Google Maps encodes a line for display on a map. You...

3 years ago

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Finding the next number in a number list, are you able to crack it!
So it goes like this, I give a number list and you find the next value! I found a way to do it, just wondering how many other...

3 years ago