Ruby | Array product() function
Array#product() : product() is a Array class method which returns an array of all combinations of elements from all arrays.
Syntax: Array.product()
Parameter: Array
Return: an array of all combinations of elements from all arrays.
Example #1 :
a = [ 18 , 22 , 33 , nil , 5 , 6 ]
b = [ 1 , 4 , 1 , 1 , 88 , 9 ]
c = [ 2 , 5 ]
puts "product() method form : #{a.product(c)}\n\n"
puts "product() method form : #{b.product(c)}\n\n"
puts "product() method form : #{c.product(a)}\n\n"
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Output :
product() method form : [[18, 2], [18, 5], [22, 2], [22, 5], [33, 2], [33, 5], [nil, 2], [nil, 5], [5, 2], [5, 5], [6, 2], [6, 5]]
product() method form : [[1, 2], [1, 5], [4, 2], [4, 5], [1, 2], [1, 5], [1, 2], [1, 5], [88, 2], [88, 5], [9, 2], [9, 5]]
product() method form : [[2, 18], [2, 22], [2, 33], [2, nil], [2, 5], [2, 6], [5, 18], [5, 22], [5, 33], [5, nil], [5, 5], [5, 6]]
Example #2 :
a = [ "abc" , "nil" , "dog" ]
c = [ nil ]
b = [ "cow" , nil , "dog" ]
puts "product() method form : #{a.product(c)}\n\n"
puts "product() method form : #{b.product(c)}\n\n"
puts "product() method form : #{c.product(a)}\n\n"
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Output :
product() method form : [["abc", nil], ["nil", nil], ["dog", nil]]
product() method form : [["cow", nil], [nil, nil], ["dog", nil]]
product() method form : [[nil, "abc"], [nil, "nil"], [nil, "dog"]]
Last Updated :
06 Dec, 2019
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