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Solved
List balanced primes
A balanced prime of order is one that equals the average of the primes before it and the primes after it. For example, 79 is ...
6 days ago
Solved
Determine whether a number is a seesaw number
Cody Problem 60957 dealt with balanced primes. In that case, balance was measured in terms of the average of primes around a giv...
6 days ago
Solved
Evaluate Deterministic Finite Automata on String
Given a Deterministic Finite Automata (DFA) and a string, determine whether or not the DFA will accept when ran on the string. A...
6 days ago
Solved
Determine if LTI system with feedback control is stable
Linear timeiinvariant systems can be represented by the differential equation , where is an matrix, is an vector representing...
6 days ago
Solved
List numbers that cannot be expressed as the sum of two primes
The Goldbach conjecture claims that even numbers greater than 2 can be expressed as the sum of two prime numbers. What about the...
6 days ago
Solved
BLOCK x3 (Version 4)
Always in this series ( <http://www.mathworks.com/matlabcentral/cody/problems/2451-block-x3-version-1/ 2451>, <http://www.mathwo...
7 days ago
Solved
BLOCK x3 (Version 3)
An extension to problems <http://www.mathworks.com/matlabcentral/cody/problems/2451-block-x3-version-1/ 2451> (by me) and <http:...
7 days ago
Solved
BLOCK x3 (Version 2)
An extension to problem 2451 ( <https://www.mathworks.com/matlabcentral/cody/problems/2451-block-x3-version-1> ). It is based...
7 days ago
Solved
BLOCK x3 (Version 1)
<https://play.google.com/store/apps/details?id=com.noodlecake.blockblock BLOCK x3> is a simple, fun and relaxing puzzle game. ...
7 days ago
Solved
Maximum Intra-Vector Swaps
This Challenge, based upon a contest in which Rokicki came in 2nd, is to find sequences containing 1:N that require maximum iter...
8 days ago
Solved
GJam March 2016 IOW: Passwords and the Block Set
This Challenge is derived from <http://code.google.com/codejam/contest/8274486/dashboard#s=p3 GJam March 2016 Annual I/O for Pas...
8 days ago
Solved
Easy Sequences 55: "Ugly" Rectangles?
A positive integer is called a regular number, if and only if there exist a non-negative integer , such that . For some reason...
10 days ago
Solved
Neural Net: Calculate Perceptron
This challenge is to calculate the Neural Net Perceptron value,P, given X, WH, and WP using ReLU on the hidden layer. This examp...
10 days ago
Solved
Double the 2x2 Matrix
In this challenge, you are given a predefined 2x2 matrix called x. Your task is to multiply every element in this matrix by 2 an...
10 days ago
Solved
Perform Rubik's Cube Moves
A standard Rubik's Cube is shown in 3-D and also unfolded to identify the specific Tile-face numbering. The faces are White-U...
12 days ago
Solved
Easy Sequences 69: Radix Economy of Factorials
The Radix Economy of a number in a particular base is the number of digits needed to express it in that base, multiplied by the ...
12 days ago
Solved
Easy Sequences 68: Factorial Rectangles
I'll celebrate my comeback to Cody with this one easy problem... ---------------- The rectangle below is special: ...
12 days ago
Solved
Easy Sequences 66: Fractional Part of Sum of Consecutive Powers over a Prime
Given three postive integers, , and , create the function , defined as follows: Where is the th prime and the s...
12 days ago
Solved
Easy Sequences 117: Fractional Part of Cube Roots
The fractional part function of a positive real number , denoted as , is defined as: , where , is the floor of . Thus, , and . ...
12 days ago
Solved
Legendary NBA Playmaker
Write a function that returns a char array containing the name and surname of a famous NBA player known for his spectacular pass...
12 days ago
Solved
Easy Sequences 65: Fractional Part of Square Roots
The fractional part function of a positive real number , denoted as , is defined as: , where , is the 'floor' of . Thus, , and ...
12 days ago
Solved
Easy Sequences 64: Base-14 Arithmetic Function
For an integer , the base-14 arithmetic function, , is defined as follows: Convert to base-14, using the letters '' for digits...
13 days ago
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Easy Sequences 63: Base-63 Arithmetic Functions
In this exercise we are required to implement 7 basic 'unsigned integer' arithmetic functions in base-63: to63(x) - convert...
14 days ago
Solved
Easy Sequences 62: Sum of Omega-3 Function
For an integer , the prime big omega function, , is defined as the total number of prime factors of . If , since , therefore . ...
14 days ago
Solved
Easy Sequences 58: Curious Prime-Rational Functions
For some prime numbers and where , a rational function , is defined as follows: . Using the output , another rational functi...
14 days ago
Solved
Easy Sequences 49: Prime Little Omega Function
For an integer , the prime little omega function, , is defined as the total number of distinct prime factors of . So, if , sinc...
16 days ago
Solved
Easy Sequences 48: Prime Big Omega of Factorial Sequence
For an integer , the prime big omega function, , is defined as the total number of prime factors of . So, if , since , therefor...
16 days ago
Solved
Easy Sequences 47: Boxes with Prime Edges
This is related to problem "Easy Sequences 41: Boxes with Integer Edges". However, here we will be investigating a smaller-sized...
16 days ago
Solved
Easy Sequences 46: Semi-prime Leap Year Pairs
A semi-prime is a positive integer that has only and exactly prime factors. Here is a list of the first few semi-primes:. We...
16 days ago
Solved
Easy Sequences 45: Second Derivative of Inverse Polynomial Function
The inverse of a function, is the function , that reverses . That means that if , then . For example, the function to convert ce...
16 days ago
