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Joel Hottinger
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Make O-spins legal
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Create a square matrix of multiples
Given an input, N, output a matrix N x N with each row containing multiples of the first element of each row. This also applies...
12 meses hace
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Count photos
Given n people, everyone must have pictures taken with everyone, each photo includes only two persons, please count the total nu...
12 meses hace
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How many offices does MathWorks have in the UK
Please write a function that returns the number of offices MathWorks has in the UK.
12 meses hace
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Sum of series IX
What is the sum of the following sequence: Σ 1/k! for k=1...n for different n?
12 meses hace
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Sum of series VII
What is the sum of the following sequence: Σ(km^k)/(k+m)! for k=1...n for different n and m?
12 meses hace
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Sum of series
a(n) = n^2 - (n-1)^2 find the summation of the series upto n i.e. a(1)+a(2)+...+a(n)
12 meses hace
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Sum of series VI
What is the sum of the following sequence: Σk⋅k! for k=1...n for different n?
12 meses hace
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Sum of series V
What is the sum of the following sequence: Σk(k+1) for k=1...n for different n?
12 meses hace
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Sum of series IV
What is the sum of the following sequence: Σ(-1)^(k+1) (2k-1)^2 for k=1...n for different n?
12 meses hace
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Sum of series III
What is the sum of the following sequence: Σ(2k-1)^3 for k=1...n for different n?
12 meses hace
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Sum of series II
What is the sum of the following sequence: Σ(2k-1)^2 for k=1...n for different n?
12 meses hace
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Sum of series I
What is the sum of the following sequence: Σ(2k-1) for k=1...n for different n?
12 meses hace
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Spot the outlier
All points except for one lie on a line. Which one is the outlier? Example: You are given a list of x-y pairs in a column ...
12 meses hace
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Find a subset that divides the vector into equal halves
Given a vector x, return the indices to elements that will sum to exactly half of the sum of all elements. Example: Inpu...
12 meses hace
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Make a run-length companion vector
Given a vector x, return a vector r that indicates the run length of any value in x. Each element in r shows how many times the ...
12 meses hace
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How many trades represent all the profit?
Given a list of results from trades made: [1 3 -4 2 -1 2 3] We can add them up to see this series of trades made a profit ...
12 meses hace
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Given a window, how many subsets of a vector sum positive
Given a vector: [1 0 -1 3 2 -3 1] and a window of 2, A sliding window would find: 1 + 0 = 1 0 - 1 = -1 ...
12 meses hace
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Implement simple rotation cypher
If given a letter from the set: [abc...xyz] and a shift, implement a shift cypher. Example: 'abc' with a shi...
12 meses hace
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Flag largest magnitude swings as they occur
You have a phenomenon that produces strictly positive or negative results. delta = [1 -3 4 2 -1 6 -2 -7]; Marching through thi...
12 meses hace
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How long is the longest prime diagonal?
Stanislaw Ulam once observed that if the counting numbers are arranged in a spiral, the prime numbers contained in it form a sur...
12 meses hace
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Find the biggest empty box
You are given a matrix that contains only ones and zeros. Think of the ones as columns in an otherwise empty floor plan. You wan...
12 meses hace