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Frequency Analysis of Text
Frequency analysis is a common task in cryptoanalysis. It is essentially counting the occurrences of alphabets (regardless of ca...

3 Monate vor

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Count numbers whose reciprocals' decimal expansions terminate

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Convert sorting indices to ranks

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Higher! Lower! Correct!
In he game of "Guess the number", the game leader mentally pictures a number between a lower and higher number, and then asks th...

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Factorize uniquely! (★★)

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average for three points
how to calculate the average (for each three values of y) y=[2 3 5 3 4 2 3 4 5 3 2 7 8 6 5 5 4 3 3 3 2 ] you ...

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Add Odd and Subtract Even Numbers in an Array
For an input array, add all the odd values and subtract the even values. The final value is the output. E.g. input = [1 2 3 4 ...

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What's for Lunch?
Given b choices of beverages, e choices of entrees, s choices of sides (take two different sides total) and d choices of dessert...

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Find triangles from edge
First input is T, a Triplet list of indices -whom each row actually contains the three indices of a triangle vertices-. size(T) ...

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String Manipulator
Write a script that takes a string as an input and returns a cell array containing – I. the count of vowels. II. Find the ind...

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Get the combinations
Consider p,q = 2 vectors of same or different length. Get a Output Array which has all the possible combinations of Elements o...

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Divisors of an integer
Given a number N, return a vector V of all integers that divide N. For example, N = 10 Then V=[1 2 5 10]

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Cody Computer Part 4 : Are you a morning Cody player Addicted ?
This is a stupid Cody challenge. You just have to *click "Submit" between 7 and 9 AM.* ... Greenwich Mean Time (GMT). To see ...

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How to find the position of an element in a vector without using the find function
Write a function posX=findPosition(x,y) where x is a vector and y is the number that you are searching for. Examples: fin...

3 Monate vor

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surface areas of a cylinder
There are 3 inputs: option, radius and height. If option= '1', compute the lateral surface area of the cylinder, for option 2 ca...

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Simple spirometer - find your lung capacity from the number and size of soap bubbles in one breath
Assumed that each bubble has practically the same diameter d. Given total number n of bubbles. Find volume v of breath.

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Generate one sample of uniform random numbers between -pi and +pi
Generate one sample of uniform random numbers between -pi and +pi.

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Exponential decay
Many dynamic processes can be approximated as an exponential decay. This applies to radioactive decay, some chemical reactions, ...

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UICBioE240 problem 1.11
Store a series of numbers into a 4 by 4 matrix, starting with the first few positions going right and down, and leaving the rest...

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The sum of individual numbers...
Well this one is taking a number and then summing the individual parts till you reach a value of 1, 2, 3, 4, 5, 6, 7, 8, 9, or 0...

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Funny problems
Generate the following vector： if n=1 then q=1; elseif n=2 then q=[2 2 1]; elseif n=3 then q=[3 3 3 2 2 1]; ... end

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Sort by absolute value
Given a list of numbers, arrange them in ascending order based on their absolute values. For example, for the list [-30, -5, 1...

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Find the rank of a matrix
Determine the rank of a matrix without using the MATLAB function of the same name.

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Find same numbers touching each other...
So the goal here is to find any number that is equal to its immediate neighbors and mark it true. Here is some examples: x...

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Double Fibonacci
double_fibonacci takes two integers, each greater than one, as input arguments (it does not have to check the format of the inpu...

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The Prime Days of Christmas
On the first day of Christmas my true love sent to me partridges in a pear tree. On the second day of Christmas my true love s...

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Battery Charge Indicator
Write a function called battery_charge that visually represents the charge of a battery. The function takes an integer paramete...

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Area of the yellow shaded region

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vector indexes for a matrix
Matlab allows us to use several indexing styles making code simpler and easier to read than using loops. Vectors can have ve...

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Geometrical meaning of determinant
Given two vectors x,y, in 2D or three vectors x,y,z in 3D space, compute the area (or volume) of the parallelogram they define. ...

3 Monate vor