Find out sum of principal diagonal element of given matrix
If A=[1 0 0;
0 1 0;0 0 1], then answer must be 3.
Flip the main diagonal of a matrix
Number of 1s in a binary string
Wrapping the Tower of Pisa
Maximum value in a matrix
Calculate area of sector
Generate vector according to sign of vector
Union of two set decreasing order
Create an anti-identity matrix
Replace odd number in given matrix by zero
Add two different item as shown in example
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