Make a square matrix with this shape. For n=4
1 1 0 0
1 0 1 0
0 1 0 1
0 0 1 1
Swap the first and last columns
Determine if a Given Number is a Triangle Number
Matrix which contains the values of an other matrix A at the given locations.
Mirror Image matrix across anti-diagonal
Find the 9's Complement
Altitude of locations on the earth
Derivative of polynomial
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