# Ruby code for find_index() method
  
# declaring array
a = [18, 22, 33, nil, 5, 6]
  
# declaring array
b = [1, 4, 1, 1, 88, 9]
  
# declaring array
c = [18, 22, nil, nil, 50, 6]
  
# find_index
puts "find_index : #{a.find_index(5)}\n\n"
  
# find_index
puts "find_index : #{b.find_index(4)}\n\n"
  
# find_index
puts "find_index : #{c.find_index(nil)}\n\n"

find_index : 4

find_index : 1

find_index : 2

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

find_index : 0

find_index : 1

find_index : 1