write a function that gives the indexes of rising or falling edge
x is a vector (assume it contains always at least one element) str is a string with value 'up' or 'down', describing if you must return indexes of rising or falling edges
Swap the first and last columns
9235 Solvers
320 Solvers
524 Solvers
Sum the elements in either diagonal of a square matrix
139 Solvers
154 Solvers
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