Find all elements less than 0 or greater than 10 and replace them with NaN
Get the area codes from a list of phone numbers
Project Euler: Problem 1, Multiples of 3 and 5
Arrange Vector in descending order
Test if two numbers have the same digits
Remove NaN ?
A quadrant matrix
Find the elements of a matrix according to a defined property.
Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
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