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mathematics , probability problem
How many different result can we have, rolling k dice?

1 month ago

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What's size of TV?
Many people buy TV. Usually they ask about diagonal. But also important are width and height. Let's assume that all TV have rati...

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Area of a regular hexagon
Given the length of a side of a regular hexagon, return its area rounded to two decimal places.

1 month ago

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Draw a fancy '7' in a zero matrix!
Given a x-by-x matrix filled with zeros (x is odd and > 3). Use 7s to draw a number 7 into it! Like this: x = 5, y = 7 7 7 7 7...

1 month ago

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Element-wise vector product (★)
Given two vectors x and y, compute their element-wise product z. Thus, if x = [1 3 5] and y = [0.5 -1 2], then z = [1*0.5...

1 month ago

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lb to kilogram
convert lb to kilogram units, easy

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Convert Kilometers to Miles
Convert kilometers to miles. Consider 1 km = 0.62 mile. Note: Don't use the '*' operator.

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Concatenate strings
concatenate a variable number of input strings to produce one outputstring

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surface of parallelogram
Given 2 vectors of each 3 elements, determine the surface of the parallelogram which can be created from these 2 vectors.

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Sum of integers numbers
Sum of the numbers from 1 to 100

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Count number of words in string
Count number of words in string Examples 'hi', answer is 1 'hi hi', answer is 2 'I enjoy cody', answer is 3

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Number of toolboxes?
Return a number equal to the number of toolboxes available to the Cody solvers.

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How many monitors are connected ?
How to obtain the numbers of monitors connected to your computer ?

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Solve for factorial of X
It gives you the number x, and set y equal to x factorial. Ex. There are 52 cards in a deck, each specific order of all 52 car...

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Calculate Drag Force
Write a MATLAB function to compute the drag force on an object moving through air: where: D is drag force (N) ρ is air de...

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Convert Fahrenheit to Celsius
Calculate the Celsius temperature C given the Fahrenheit temperature F. Examples: Input F = 90 Output C is 32.22 I...

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Kelvin to Celsius
Degrees Celsius = degrees Kelvin - 273.15. Given a temperature in Kelvin, return the equivalent temperature in Celsius.

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Duplicate a character
Duplicate a character 'n' times. Example 1: str='a' n=5 output='aaaaa' Example 2: str='*' n=3 output='***'

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Test if a matrix is symmetric
Write a logical function that returns 1 if the input matrix is symmetric and 0 otherwise.

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Remove the Zero
Given an array n, remove all zeros

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Reverse the input
Given an input (n), produce an output in the reverse order with out using string variables or string function. Example x ...

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Perimeter of a quadrilateral
There are four cars starting at a point. The first car points north, the second one points east, the third one points south, an...

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Calculate SNR in dB using original signal and quantized signal
origs: the original signal quants: the quantized signal *hint* : need to calculate the quantization error and plug into SN...

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Summing the last column column
Given a matrix, return the sum of the last column of the array.

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Append two matrix as shown below example
Append two matrix as shown below example A=[1 2; 3 4] and B=[5 6;7 8] Answer must be 1 2 5 6 3...

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Summation of array
Given an array, Find the sum of all of the elements in it Examples: Input x = [1 2 3 5; 4 5 6 7]; Output y is 33

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Matlab Basics II - Minimum
Write a function that returns the minimum of each ROW of a matrix x example: x = [1 2 3; 4 5 6]; output [1;4];

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Scalar Matrix Manipulation
Assume, input x is a scalar matrix such as, x = 2 0 0 0 2 0 0 0 2 th...

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Create a magic square matrix for a given odd integer
A magic square of size 'N' is a matrix that satisfies the following criterias: # Dimension - NxN # Matrix should contain ALL...

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Convert RGB to Grayscale
Convert a 3 element RGB array to its correspoding grayscale pixel (a scalar) *Hint: a formula exists!

1 month ago