Given an array of numbers. Leave only positive numbers in it.
Given an array of numbers. Leave only negative numbers in it.
Given an array of numbers. Leave in it
only numbers that are greater than zero,
but less than 10
.
Given an array with strings. Leave in it
only those strings whose length is more
than 5
characters.
Given an array of numbers. Leave in it
only those numbers whose product of their
values and index numbers is less
than 30
.
An array is given, it can contain ordinary
elements and subarrays, for example
[1, 2
, [3, 4], 5
, [6, 7]].
Leave only ordinary elements in it.