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 :
a = [ 18 , 22 , 33 , nil , 5 , 6 ]
b = [ 1 , 4 , 1 , 1 , 88 , 9 ]
c = [ 18 , 22 , 50 , 6 ]
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 :
a = [ "abc" , "nil" , "dog" ]
c = [ "cat" , nil ]
b = [ "cow" , nil , "dog" ]
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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