Ruby | Array rindex() function
Last Updated :
06 Dec, 2019
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Array#rindex() : rindex() is a Array class method which returns the index of the last object in the array.
Ruby
Output :
Ruby
Output :
Syntax: Array.rindex() Parameter: Array Return: the index of the last object in the array. if not present then nilExample #1 :
# Ruby code for rindex() 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]
# rindex method example
puts "rindex() method form : #{a.rindex(22)}\n\n"
puts "rindex() method form : #{b.rindex(1)}\n\n"
puts "rindex() method form : #{c.rindex(18)}\n\n"
rindex() method form : 1 rindex() method form : 3 rindex() method form : 0Example #2 :
# Ruby code for rindex() method
# declaring array
a = ["abc", "nil", "dog"]
# declaring array
c = ["cat", nil]
# declaring array
b = ["cow", nil, "dog"]
# rindex method example
puts "rindex() method form : #{a.rindex("abc")}\n\n"
puts "rindex() method form : #{b.rindex("cat")}\n\n"
puts "rindex() method form : #{c.rindex("cat")}\n\n"
rindex() method form : 0 rindex() method form : rindex() method form : 0
