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EZ6

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EZ
EZ

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String permutations on phone keyboard
Given a number such as 2639 return all possible string permutations using the phone-keyboard on Problem 1069. input = 78 outpu...

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Problema


Identify points inside a Reuleaux triangle
Write a function to identify points that lie in or on a Realeaux triangle, which is a curve of constant width. The input to the ...

casi 2 años hace | 1 | 8 solvers

Problema


Determine whether a number is a Ludic prime
Ludic numbers are formed by a sieve. Start with a list of the positive integers. Skip 1 and start with 2. Then delete every seco...

casi 2 años hace | 1 | 9 solvers

Resuelto


Forward Elimination for Gauss Elimination
Perform forward elimination for a given pivot column in the augmented matrix, Ab=[A,b]

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Generate Hadamard Matrix without using hadamard function
In mathematics, a Hadamard matrix, named after the French mathematician Jacques Hadamard, is a square matrix whose entries are e...

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2048 Next Move
Given a board in the game 2048 (see the game here: <http://gabrielecirulli.github.io/2048/ 2048>) and a direction ('up','down','...

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Combinations using Stirling numbers of the second kind
Output the number of ways to distribute n labelled balls among k identical boxes (some of which might be empty). Example: ...

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Our Dad went to Buy a car But the car seller can't think the easiest way to get the car out Give Him a solution!

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Given Hypotenuse points create two right triangles
Given two points defining a hypotenuse create two right triangles of (h,5,R). Return the two (x,y) points that create the right ...

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Decimal to Binary conversion for Large Integers

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switch base
Input an integer, switch its base. Input is a string, so is output.

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Sample from random roulette
Given a list of values and their probabilities sample 10,000 values. Example: x = [1 2 3 4 5]; prob = [0.2 0.1 0.4 0.1 0.2] ...

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Define the higher order function - foldl
Given a binary function f, a starting value a, and a list (row vector) xs of values, the higher order function foldl folds the f...

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three digits
Input three digits no larger than 4，say 1,2 and 3, write the possible largest number composed（concatenation and power） only by t...

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Path of least resistance
Find the length of the shortest path through the matrix from the top left to bottom right corner. You may move right, down, or d...

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REPMAT Enhancement - Faster for Large Row Replication of Vector
The Challenge is to modify repmat.m to maintain all of its normal functionality and enhance its performance for large row replic...

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Repeat string n times - 3
function myOutput = rep_str_3(string1, string2, num1, num2, n) function desiredOutput = rep_str_3('string1', 'STRING2', 0...

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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...

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combine cells
A cell type variable is created. However it has other cells in itself. we want to integrate them all in a single cell. the conte...

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Obscured by Earth
Given two points in <http://en.wikipedia.org/wiki/Earth-centered_inertial ECI> reference frame, check wheather they are in line-...

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Problema


Find the closest canyon prime
My wife and I celebrated our honeymoon and most recent anniversary in Yellowstone and Grand Teton National Parks. After returnin...

casi 2 años hace | 0 | 8 solvers

Resuelto


Code breaker, Part II: Operation Orthos
You have been tasked with decoding several batches of coded messages that have been intercepted. Based on previous intellig...

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Is it a mail?
Electronic mail, or email, is a method of exchanging digital messages between people using digital devices such as computers, mo...

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Find my secret function IV
We use the same secret function used on the past "Find my secret function ..." x=23 -------->> y=3 X=1000 ------->> 163

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Resuelto


Condition number of Kronecker product
Given NxN matrix A and MxM matrix B, where M,N<=1000, write a routine to compute the condition number of kron(A,B).

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The other half of the Fibonacci sequence
The <http://mathworld.wolfram.com/FibonacciNumber.html "Fibonacci sequence"> — F = [1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144,...

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How many revolutions around the earth
Calculate how many revolutions you will around the earth till 1/1/2100. Given the birhdate find your age in number of days on 1...

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Project Euler: Problem 14, Longest Collatz sequence
The following iterative sequence is defined for the set of positive integers: n → n/2 (n is even) n → 3n + 1 (n is odd) U...

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