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find

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find

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find

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find

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find

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find

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find

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find

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Create a vector of n alternating ones and zeros (★★)
Given n, your output should be a vector y of numbers such that the first number is 1 and the numbers following it alternate betw...

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Create a vector of the first n odd numbers (★)
If n = 10, your program should return a vector y, where y = [1 3 5 7 9 11 13 15 17 19].

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Vector raised to a power, element-wise (★)
Given a vector A and a number x, raise each element of the vector to the power of x. Thus, if A = [2 5 7 1] and x = 0.5, then ...

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Vector of digits (★★)
Given a positive integer x, construct a vector y with all the digits of x in the order of appearance in x. Thus, if x = 172...

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What is the current time in Darwin, Australia?
Traders need to track exchange calendars and trading hours in detail, and account for time zone differences and daylight savings...

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Number of Circles in a Number
Given a number, return the number of closed 'circles' in the base 10 numerical representation. Note: the number 4 has no circ...

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Compute the perimeter of an ellipse
While the area of an ellipse is straightforward to compute, the perimeter (or circumference) is more complicated. The perimeter ...

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Find out value of sine given by degree.
Find out value of sine given by degree. If theta=30, it's value must be 0.5.

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Reverse a matrix
Its simple. You have to reverse a given matrix.

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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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Moving average (variable kernel length)
Find the moving average in a vector. The kernel length is a variable. For example x = 1:10 kernel_length = 2 would r...

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Change the sign of even index entries of the reversed vector
change the signs of the even index entries of the reversed vector example 1 vec = [4 -1 -2 9] ans = [9 2 -1 -4] example2...

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Divide by 4
Given the variable x as your input, divide it by 4 and put the result in y.

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Kinetic Energy
Given the mass m and velocity v of an object, determine its <http://en.wikipedia.org/wiki/Kinetic_energy kinetic energy>.

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Roots
Find out the roots of a given polynomial equation.Given are the coefficients of the equation.

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What number has this problem?
This problem is added because it is problem number *???* in the "Community" problems section. <http://www.mathworks.de/matlab...

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Identify the heavier bag
There are N=2^n bags of rice looking alike, N-1 of which have equal weight and one is slightly heavier. The weighing balance is ...

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Generate pi using logarithm
Generate pi using logarithm

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How many digits are there?
Input(s) - any string Output(n) - number of digits within string s

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Sum the elements in either diagonal of a square matrix
Sum the elements of a square matrix that lie on either the major diagonal or anti-diagonal. (Include all elements that are part ...

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Product of elements in row
Product of matrix such that a=[3 3 1] b=9

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construct matrix with identical rows
Input a row vector such as x=1:10. Now we need to construct a matrix with L rows,of which every row vector is a copy of x. E...

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