如何获取Ruby中数组的最后一个元素？

ComputerUser5243

我如何像使用.map一样从数组中提取值？这是我的代码：

counter = 0
ary = Array.new

puts "How many teams do you have to enter?"
hm = gets.to_i

until counter == hm do
  puts "Team City"
  city = gets.chomp

  puts "Team Name"
  team = gets.chomp

  ary.push([city, team])
  counter += 1
end

ary.map { |x, y|
  puts "City: #{x} | Team: #{y}"
}

print "The last team entered was: "
ary.last

最终结果如下所示：

City: Boston | Team: Bruins
City: Toronto | Team: Maple Leafs
The last team entered was: 
=> ["Toronto", "Maple Leafs"]

但是我要最后一行读

The last team entered was: Toronto Maple Leafs

如何在没有=>，方括号和引号的那一行获取值？

萨什·辛哈（Sash Sinha）

当您不希望在行尾使用换行符时，例如在获取用户输入时，请使用print而不是puts；此外，您还可以#{variable}使用puts在同一行中进行打印：

counter = 0
ary = Array.new

print "How many teams do you have to enter? "
hm = gets.to_i

until counter == hm do
  print "Team #{counter + 1} City: "
  city = gets.chomp

  print "Team #{counter + 1} Name: "
  team = gets.chomp

  ary.push([city, team])
  counter += 1
end

ary.map { |x, y| puts "City: #{x} | Team: #{y}" }

puts "The last team entered was: #{ary.last.join(' ')}"

用法示例：

How many teams do you have to enter?  2
Team 1 City:  Boston
Team 1 Name:  Bruins
Team 2 City:  Toronto
Team 2 Name:  Maple Leafs
City: Boston | Team: Bruins
City: Toronto | Team: Maple Leafs
The last team entered was: Toronto Maple Leafs

在这里尝试！

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