Find the two-word state names
Number of 1s in the Binary Representation of a Number
Sum all integers from 1 to 2^n
Doubling elements in a vector
Generate a string like abbcccddddeeeee
Create a matrix X, where each column is a shifted copy of the vector v
Remove NaN ?
Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
Matrix with different incremental runs
Matrix which contains the values of an other matrix A at the given locations.
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