Ruby Array : sort, reverse and unique

By - 
numbers = [1, 4, 6, 7, 3, 2, 5]
=> [1, 4, 6, 7, 3, 2, 5]

Sort

numbers.sort
=> [1, 2, 3, 4, 5, 6, 7]


numbers = [1, 4, 6, 7, 3, 2, 5]
=> [1, 4, 6, 7, 3, 2, 5]

numbers.sort!
=> [1, 2, 3, 4, 5, 6, 7]

Reverse

numbers.reverse
=> [7, 6, 5, 4, 3, 2, 1]

Unique

numbers = [1, 4, 6, 7, 3, 2, 5, 1, 2]
=> [1, 4, 6, 7, 3, 2, 5, 1, 2]

numbers.uniq
=> [1, 2, 3, 4, 5, 6, 7]

numbers = [1, 4, 6, 7, 3, 2, 5]
=> [1, 4, 6, 7, 3, 2, 5]

numbers.uniq!
=> [1, 2, 3, 4, 5, 6, 7]

Note : Using Exclamation mark to make changes in original array

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