Ruby | Array unshift() function Last Updated : 24 Feb, 2022 Summarize Comments Improve Suggest changes Share Like Article Like Report Array#unshift() : unshift() is a Array class method which returns the shifted array with argumented element in place. Syntax: Array.unshift()Parameter: ArrayReturn: the shifted array with argumented element in place. Example #1 : Ruby # Ruby code for unshift() 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] # unshift method example puts "unshift() method form : #{a.unshift(2)}\n\n" puts "unshift() method form : #{b.unshift(4)}\n\n" puts "unshift() method form : #{c.unshift(22)}\n\n" Output : unshift() method form : [2, 18, 22, 33, nil, 5, 6] unshift() method form : [4, 1, 4, 1, 1, 88, 9] unshift() method form : [22, 18, 22, 50, 6] Example #2 : Ruby # Ruby code for unshift() method # declaring array a = ["abc", "nil", "dog", "abc"] # declaring array b = ["cow", nil, "abc", "dog"] # declaring array c = ["cat", nil, "abc"] # unshift method example puts "unshift() method form : #{a.unshift("abc")}\n\n" puts "unshift() method form : #{b.unshift()}\n\n" puts "unshift() method form : #{c.unshift()}\n\n" Output : unshift() method form : ["abc", "abc", "nil", "dog", "abc"] unshift() method form : ["cow", nil, "abc", "dog"] unshift() method form : ["cat", nil, "abc"] Comment More infoAdvertise with us Next Article Ruby | Array unshift() function M mayank5326 Follow Improve Article Tags : Ruby Ruby-Methods Ruby Array-class Similar Reads Ruby | Array shift() function Array#shift() : shift() is a Array class method which removes the first element of self and returns it or nil if the array is empty. Syntax: Array.shift() Parameter: Array Return: removes the first element of self and returns it or nil if the array is empty. Example #1 : Ruby # Ruby code for shift() 2 min read Ruby | Array uniq() function Array#uniq() : uniq() is a Array class method which returns a new array by removing duplicate values in the array. Syntax: Array.uniq() Parameter: Array Return: a new array by removing duplicate values in the array Example #1 : Ruby # Ruby code for uniq() method # declaring array a = [18, 22, 33, ni 2 min read Ruby | Array uniq!() function Array#uniq!() : uniq!() is a Array class method which removes duplicate elements from the array and returns only if there is duplicate element in the array. Syntax: Array.uniq!() Parameter: Array Return: removes duplicate elements from the array. Example #1 : Ruby # Ruby code for uniq!() method # de 1 min read Ruby | Array to_s() function Array#to_s() : to_s() is a Array class method which returns self array. Syntax: Array.to_s() Parameter: Array Return: self array Example #1 : Ruby # Ruby code for to_s() 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, 1 min read Ruby | Array sort() function Array#sort() : sort() is a Array class method which returns a new array created by sorting self Syntax: Array.sort() Parameter: Array Return: a new array created by sorting self Example #1 : Ruby # Ruby code for sort() method # declaring array a = ["abc", "nil", "dog"] 1 min read Like