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Ohmic Heating

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Find the number of primes less than input
Given an integer n, determine the number of primes less than or equal to n.

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Get the n-th rand number with given seed
Given seed s, return the n-th rand number using rand(). Round the answer with 4 digits. n is a postive integer.

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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.

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Convert elements in numeric array into different class
Write a function that converts elements in a numeric array into a different class. Example: a = [1:5]; % class: double b...

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Find smallest integer type to accommodate your number
MATLAB supports 1-, 2-, 4-, and 8-byte storage for integer data. Find the smallest integer type to accomodate a scalar integer. ...

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determine skid distance of car
Determine the distance a car skids to a stop given initial velocity (v) and time (t).

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Check if a matrix Diagonal is equal to its secondary diagonal
Your function should return True if the secondary diagonal is equal to diagonal, and False otherwise. Eg: M = [1 2 1 ...

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Add the number of horizontal and vertical movements to each matrix element
Given n, create a square matrix and with element (1,1) = 1, add 1 to each element for each horitizonal and vertical movement. E...

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How many figures currently exist?
Return the number of figures that exist at any given time.

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Find index of non empty cell array
This question aims to understand the characteristics of MATLAB programs. Educational problem. Please find non empty index of ...

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Find the index of elements in a string vector
In the vector of v, find the index of elements specified by a. v = ["Lion","Koara","Elephant","Snake","Dog","Cat","Camel"]; ...

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odd number odd sum
How many three digit numbers are there whose sum of the digits is odd?

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Find the number of rectangles
There is a m*n grade given. Find the number of rectangles in the grid. Remember, a square is also a rectangle.

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Find files with extension ext in the current directory
List all files with extension 'ext' in the current directory. Return a char matrix with the name of files in rows. Return 0 if...

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Sales Tax

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Compute the drag on a moving vehicle
We assume no rolling resistance, and the simple rule for Drag : , where is the density of the fluid (assumed at 1.2 ), is the ...

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Draw 'Y'
Draw 'Y' in an x-by-x matrix (where x is odd and x >= 3) Examples: x = 3 y = [1 0 1 0 1 0 0 1 0] x = 5 y = [1...

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Orthogonal lines
Check whether two given lines are orthogonal or not. Two lines are orthogonal if they create a right angle at their intersect...

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PIN code II
A cell phones requires a PIN code to open which only includes numbers; how long (in terms of minutes) does it take to enter all ...

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Convert a grayscale image into RGB colour format, preserving data type
In the Image Processing Toolbox, MATLAB provides rgb2gray to convert a 3 channel color image into a 1 channel intensity...

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Bubble sort
Write your own bubble sort function ( <https://en.wikipedia.org/wiki/Bubble_sort>) to sort all elements in x in ascending order....

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Which Prime
Given two prime numbers, specify the relation between them i.e. - 'Twin Prime', 'Cousin Prime', 'Sexy Prime' or 'None'

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Squares of odd numbers upto a given range
Find the squares of odd numbers upto a given range. If Given x=6 return y=(1^2,3^2,5^2) y=1,9,25 If Given x=5 retu...

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FizzBuzz
<http://c2.com/cgi/wiki?FizzBuzzTest FizzBuzz Test> The "Fizz-Buzz test" is an interview question designed to help filter out...

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Sort Except Zeros
Sort the numbers in a vector. But the position of zeros should not be changed. Example: sort_except_zeros( [5 3 0 0 2 4] ) == [...

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Highest building

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Normalizing a vector

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Find the nearest value to the given one

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Do you have the minimum age?

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