Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...
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Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x.
For instance if x=2 then y must be 1+2+3+4=10.
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Fibonacci sequence
Calculate the nth Fibonacci number.
Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ...
Examples:
Inpu...
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Energy of a photon
Given the frequency F of a photon in giga hertz.
Find energy E of this photon in giga electron volts.
Assume h, Planck's ...
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How to subtract?
* Imagine you need to subtract a few numbers using MATLAB.
* You will not be using eval for this task.
* Given two ASCII strin...
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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...
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Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1.
Examp...
Sum of diagonal of a square matrix
If
x = [1 2 4; 3 4 5; 5 6 7]
then y should be the sum of the diagonals of the matrix
y = 1 + 4 + 7 = 12
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Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because
6 = 1 + 2 + 3
which can be displa...
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Swap two numbers
Example
Input:
a = 10
b = 20
Output
a = 20
b = 10
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Reverse a matrix
Its simple. You have to reverse a given matrix.
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Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B.
So if
A = [1 2 3; 4 5 6];
and ...
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Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...
Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so:
x = [1 2 3 4]
Commas are optional, s...
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Times 2 - START HERE
Try out this test problem first.
Given the variable x as your input, multiply it by two and put the result in y.
Examples:...