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determine if

determine if the elements of a matrix is a nan and return true

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Cube root of max value in a vector

Find the cube root of the maximum value in a vector

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Momentum Calculation

A shopping cart of mass 'm1' is traveling with velocity 'u' and collides with a second shopping cart of mass 'm2.' The two shopp...

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Determine whether a given point is inside or outside a polygon

A closed polygon may be described by an N x 2 array of nodes, where the last node and the first node are the same. Each row of t...

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Roots of a quadratic equation.

Calculate the roots of a quadratic equation, given coefficients a, b, and c, for the equation a*x^2 + b*x + c = 0.

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Times 5

Try out this test problem first. Given the variable x as your input, multiply it by five and put the result in y. Examples...

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Circle/Pentagon Overlap

Your function will be provided with the five vertices of a pentagon (p) as well as the center point (cp) and radius (r) of a cir...

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Word Distance - Average Sort

Based on the method of <https://www.mathworks.com/matlabcentral/cody/problems/44815-word-distance-sum this problem>, write a fun...

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Harmonic series counting

The function takes a positive limit as input, And counts how many terms must be summed in the harmonic series: 1/1, 1/2, 1/3, ...

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Compound Interest: Present Value

Theorem : Compound Interest where, F : Future value at the end of n periods P : Present value r : Annual nominal rate n :...

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Sherlock Holmes: The Spy Problem

A guest at a party is a spy if this person is not known by any other guest, but knows all of them. There is at most one spy at a...

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Twin Primes

Twin primes are pairs of primes that are immediately next to each other (difference of two). The lesser of twin primes are 3, 5,...

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Cycling — Critical Power

From Training and Racing with a Power Meter by Allen and Coggan: "A number of equations have been presented in the scientific...

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hanoi towers II

with 3 rods (1,2 & 3), the goal is to move a tower of n disks from rod #1 to rod #3. You can move disks only one by one, on the...

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Are you in or are you out?

Given vertices specified by the vectors xv and yv, and a single point specified by the numbers X and Y, return "true" if the poi...

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High school cafeteria

Given an input vector of positive integers, return a row vector with the primes first (in increasing order) and the composites n...

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Tune your guitar

Given an input string with the scientific pitch notation for standard tuning ( <http://en.wikipedia.org/wiki/Guitar_tunings#Stan...

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Counting in Finnish

Sort a vector of single digit whole numbers alphabetically by their name, in Finnish. See the Wikipedia page for <http://en.wik...

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Converting Decimal to Binary

Given a decimal number that may include a fractional component, convert it into binary representation. The numbers you are given...

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Solve the logic

logic(1) = -4 logic(2) = -8 logic(3) = -9 logic(4) = 4 logic(5) = 95 logic(6) = 690

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Backward Substitution

Solve a upper triangular linear set of equations as described in the following link: http://www.people.virginia.edu/~teh1m/cody/...

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Return 'on' or 'off'

When the input is true, return 'on', otherwise, return 'off'.

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文字列の最初と最後の文字だけ抜き出しましょう。

文字列の最初と最後の文字をつなげて返すような関数を作成しましょう。 もし文字が一つしかない場合、その文字は最初と最後の文字のため、関数はその文字を二回返すようにしておきましょう。 例: stringfirstandlast('borin...

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対称で、n*2n のサイズの行列を作成しましょう

サイズが n*2n の "mirror" 行列（対称行列）を作成しましょう。 例: n=2 の場合、以下のような出力を返します。 m = [ 1 2 2 1 1 2 2 1 ] n = 3 の場合、以下のよう...

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