For a given input n, make an n by n identity matrix that contains the elements 1:n along its diagonal. For example, if input=5:
output = [1 0 0 0 0;
0 2 0 0 0;
0 0 3 0 0;
0 0 0 4 0;
0 0 0 0 5]
This problem's title and description were cleaned up and additional test cases were added.
Make a checkerboard matrix
radius of a spherical planet
Matlab Basics - Create a row vector
Where is the number that you want to find?
Replace all odd numbers with NaN
Sum the rows
true or false
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