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

Array#rotate() : rotate() is a Array class method which returns a new array by rotating self so that the element at count is the first element of the new array.

Syntax: Array.rotate()

Parameter: Array

Return: a new array by rotating self so that the element at count is the first element of the new array.

Example #1 :



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# Ruby code for rotate() 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]
  
# rotate method example
puts "rotate() method form : #{a.rotate(2)}\n\n"
  
puts "rotate() method form : #{b.rotate(1)}\n\n"
  
puts "rotate() method form : #{c.rotate(-1)}\n\n"

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Output :
rotate() method form : [33, nil, 5, 6, 18, 22]

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

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

Example #2 :

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# Ruby code for rotate() method
  
# declaring array
a = ["abc", "nil", "dog"]
  
# declaring array
c = ["cat", nil]
  
# declaring array
b = ["cow", nil, "dog"]
  
  
# rotate method example
puts "rotate() method form : #{a.rotate(2)}\n\n"
  
puts "rotate() method form : #{b.rotate(1)}\n\n"
  
puts "rotate() method form : #{c.rotate(-1)}\n\n"

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Output :

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

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

rotate() method form : [nil, "cat"]




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