Reverse a string in Ruby

Question

How do you reverse a string in Ruby? I know about string#reverse. I\'m interested in understanding how to write it in pure Ruby, preferably an in-place solution.

Answer 1

def reverse(string)
reversed_string = ""

idx = 0
while idx < string.length
reversed_string = string[idx] + reversed_string
idx += 1
end

return reversed_string
end