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# Dan

668 total contributions since 2012

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Count decimal digits of a number
* Given an integer number you have to return the number of its digits. * For example 248 has 3 digits and 1589 has 4 digits ...

bijna 7 jaar ago

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Check if equal
Return true if all the elements of an nD array are equal, false otherwise.

bijna 7 jaar ago

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Count ones
Write a program to count number of ones (1s) in an integer variable input. For example: Input x=2200112231 output y=3 I...

bijna 7 jaar ago

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Convert a Cell Array into an Array
Given a square cell array: x = {'01', '56'; '234', '789'}; return a single character array: y = '0123456789'

bijna 7 jaar ago

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Free passes for everyone!
_Simply return the name of the coolest numerical computation software ever_ *Extra reward* (get a _freepass_): As an addit...

ongeveer 7 jaar ago

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Diagonal & Anti-Diagonal Matrix: Easy
Create a matrix as shown below from "magic" square. For example: if input x=9;then use mgic(x) and create the matrix...

ongeveer 7 jaar ago

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Matrix to column conversion
Given a matrix of any size, convert it into a column vector. e.g A=[10 20 30; 40 50 60] then, B = [10; 40; ...

ongeveer 7 jaar ago

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Min of a Matrix
Return the minimum value in the given matrix.

ongeveer 7 jaar ago

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Enlarge array
Given an mxn numeric array (A) and a 1x2 vector (sz) indicating the dimensions [p q] to enlarge each element, return an (m*p)x(n...

ongeveer 7 jaar ago

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Can you beat the lottery?
Well this one you may not get every time, but it is a lottery! Here is the code that generates the lottery numbers (you can try ...

ongeveer 7 jaar ago

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NO _________ ALLOWED....
So you're given a sentence where if there is a particular word in the sentence then the output is 1, if it is not there then the...

ongeveer 7 jaar ago

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calculate RMS voltage
given peak to peak voltage, calculate rms voltage

ongeveer 7 jaar ago

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Is there a GPU Device?
Return true if there is a supported GPU device available on the Cody computer.

ongeveer 7 jaar ago

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Average of square wave
given positive and negative peak , calculate dc level, 50% duty cycle

ongeveer 7 jaar ago

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Negative matrix
Change the sign of all elements in given matrix.

ongeveer 7 jaar ago

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Find the hypotenuse
Given a and b (the two sides of a right-triangle), find c, the hypotenuse.

ongeveer 7 jaar ago

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Maximum value in a matrix
Find the maximum value in the given matrix. For example, if A = [1 2 3; 4 7 8; 0 9 1]; then the answer is 9.

ongeveer 7 jaar ago

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Get ranks of values in a vector
For a given vector, say [6 3 8 2], return the ranks (ascending) of observations, i.e. [3 2 4 1]. Do not worry about tied ranks. ...

ongeveer 7 jaar ago

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Find last zero for each column
Given a numeric array of arbitrary size, return the row index of the last zero for each column. If a column contains all nonzero...

ongeveer 7 jaar ago

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Similar Triangles - find the height of the tree
Given the height, h1, of a power pole, shorter than a tree, a given distance, x2 away, please find h2, height of the tree. Pleas...

ongeveer 7 jaar ago

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Coin Tossing: Probability of Same Heads for N tosses
A pair of physicists toss a coin n times each. What is the probability that they tossed the same number of heads? *Input:*...

ongeveer 7 jaar ago

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Linear system solve
Solve a linear set of equations as described in the following link: http://www.people.virginia.edu/~teh1m/cody/linsolv1.pdf

ongeveer 7 jaar ago

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Create a random logical vector of N elements of which M are true.
Your task for tomorrow is to create a random binary (logical) vector of N elements of which M are true. For example: ran...

ongeveer 7 jaar ago

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edge detection
write a function that gives the indexes of rising or falling edge x is a vector (assume it contains always at least one eleme...

ongeveer 7 jaar ago

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Return elements unique to either input
Given two numeric inputs a and b, return a row vector that contains the numbers found in only a or only b, but not both. For ex...

ongeveer 7 jaar ago

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Now 20% off!
Furloughs are hitting government workers this year. To commemorate getting one unpaid day off each week until the end of Septem...

ongeveer 7 jaar ago

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Array GCD
* Find Greatest Common Divisor in a given array * Function Template: function ans = arraygcd(a) % a=[45 15 200 ...

ongeveer 7 jaar ago

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Implement a counter
Write a function that returns a function that counts the number of times it is invoked. Example: >> h = counter; >> h() ...

ongeveer 7 jaar ago

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Calculate distance travelled when given radius and rotations
When given radius of wheel and number of rotations calculate total distance travelled consider pi=3.14

ongeveer 7 jaar ago

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Pythagorean perfect squares: find the square of the hypotenuse and the length of the other side
Given the square root of a square number, *seed*, and a range, *n*, find the square number, *Z* as well as the other side, *y*, ...

ongeveer 7 jaar ago