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Ruby | Array reverse!() function
  • Last Updated : 06 Dec, 2019

Array#reverse!() : reverse!() is a Array class method which returns reverses self in place

Syntax: Array.reverse!()

Parameter: Array

Return: Reverses self in place

Example #1 :






# Ruby code for reverse!() method
  
# declaring array
a = [18, 22, 33, nil, 5, 6]
  
# declaring array
b = [1, 4, 1, 1, 88, 9]
  
# declaring array
c = [18, 22, 50, 6]
  
# reverse! method example
puts "reverse!() method form : #{a.reverse!()}\n\n"
  
puts "reverse!() method form : #{b.reverse!()}\n\n"
  
puts "reverse!() method form : #{c.reverse!()}\n\n"

Output :

reverse!() method form : [6, 5, nil, 33, 22, 18]

reverse!() method form : [9, 88, 1, 1, 4, 1]

reverse!() method form : [6, 50, 22, 18]


Example #2 :




# Ruby code for reverse!() method
  
# declaring array
a = ["abc", "nil", "dog"]
  
# declaring array
c = ["cat", nil]
  
# declaring array
b = ["cow", nil, "dog"]
  
  
# reverse! method example
puts "reverse!() method form : #{a.reverse!()}\n\n"
  
puts "reverse!() method form : #{b.reverse!()}\n\n"
  
puts "reverse!() method form : #{c.reverse!()}\n\n"

Output :

reverse!() method form : ["dog", "nil", "abc"]

reverse!() method form : ["dog", nil, "cow"]

reverse!() method form : [nil, "cat"]

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