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Solved
The Hills Are Alive...
After a long day of coding, you decide to get some fresh air and hike up a nearby hill. The hill isn't very tall, but since you...
1 day ago
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Ramanujan's Number
About 1729 1729 is the first positive integer which can be expressed as the sum of two positive cubes in two different ways. ...
3 days ago
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Peg Solitaire - Apply Move
About Peg Solitaire . Previous Problem. Consider inital board; If we move the peg located on (4,6) to the left (4) directio...
3 days ago
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Peg Solitaire - Get Possible Moves
About Peg Solitaire. Consider following initial board; (1) indicates there is a peg and (0) indicates empty holes. For thi...
3 days ago
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Cryptography with A Square Matrix : Decoding
Previous Problem: Cryptography with A Square Matrix : Encoding Now decode a double vector to a (hopefully!) meaningful text. I...
3 days ago
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Cryptography with A Square Matrix : Encoding
Matrix inverse operation can be used to encode or decode of a message. For example text = 'matlab & cody'. numeric e...
3 days ago
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Get Next Combination
Return next combination For example three-element combinations of 1:5 1 2 3 1 2 4 1 ...
3 days ago
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Bridge and Torch Problem - Probability
<https://en.wikipedia.org/wiki/Bridge_and_torch_problem Details of the problem ...> There are four people who wants to cross...
3 days ago
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Bridge and Torch Problem - Length of Unique Time List
<https://en.wikipedia.org/wiki/Bridge_and_torch_problem Details of the problem ...> Input is crossing time list. (for exampl...
3 days ago
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Bridge and Torch Problem - Minimum time
<https://en.wikipedia.org/wiki/Bridge_and_torch_problem Details of the problem ...> Input is crossing time list. (for exampl...
3 days ago
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Besson Ranks
Return Besson Ranks. You can look at <https://www.sciencedirect.com/science/article/pii/0895717789903671 this article.> Besso...
3 days ago
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Write out numbers in words
Write out numbers in words ( range [0-9999] ) with British spelling rules. For example; 1 > one 56 > fifty-six 100 > one hund...
3 days ago
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Challenging perms function!
This problem is highly related with <http://www.mathworks.com/matlabcentral/cody/problems/1127-decrypt-a-secret-message Problem ...
3 days ago
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Easy Sequences 116: Summation involving nthroot, floor, and ceiling functions
Given a postive integers and , we are asked to evaluate the following summation: ...
3 days ago
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Easy Sequences 115: Integral involving square root, floor, and round functions
Given a postive real number , we are asked to evaluate the following integral: ...
3 days ago
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Easy Sequences 114: Counting Unique Numbers
A Unique Number is defined as a positive integer with no repeated digits. This means that and are unique numbers, but and ar...
3 days ago
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Easy Sequences 113: Almost Golden Integer Rectangles 2
A golden rectangle is a rectangle whose side lengths are in the golden ratio, , where: . ...
3 days ago
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Easy Sequences 112: Almost Golden Integer Rectangles 1
A golden rectangle is a rectangle whose side lengths are in the golden ratio, , where: . ...
3 days ago
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Easy Sequences 111: Repnums as Hypotenuse of Pythagorean Triangles
The number belongs to a class of numbers called Repunit Numbers, in which all digits are . For this problem, we'll define a s...
4 days ago
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Easy Sequences 110: Integration of the Sum of a Recursive Trigonometric Function
A trigonometric function, , is defined as follows: , in radians Applying recursively we define another funct...
4 days ago
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Easy Sequences 109: Summation of Derivatives of a Trigonometric Function
A trigonometric function, , is defined as follows: where: ; and ...
4 days ago
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Easy Sequences 108: Enclosing a Circle with Primitive Pythagorean Triangles
Pythagorean Triangle is a right triangle all sides of which are represented by integers. Examples are triangles with sides and ...
4 days ago
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Easy Sequences 106: Counting Pythagorean Triangles inside a Circle
Pythagorean Triangle is a right triangle all sides of which are represented by integers. Examples are triangles with sides and ...
6 days 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...
6 days ago
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Easy Sequences 104: One-line Code Challenge - GCDs of Sum of Consecutive Cubes
For a natural number, n, the function CC(n) is defined as follows: In other words, CC(n) is the sum of cubes ...
6 days ago
