如何按升序对数组进行排序

Question

数组中的信息：

scores = %w[ScoreA ScoreB ScoreC ScoreD ScoreE ScoreF ScoreG ScoreH ScoreI ScoreJ]

需要按照高尔夫球得分的升序显示。

任何人都可以帮助按升序对输出进行排序吗？

golf = scores.map do |score_number|
  print "Enter the score for #{score_number}:"
  [score_number, gets.to_i]
end

puts golf.sort

Answer 1

只需在块中使用Array#sort

golf.sort { |a, b| a.last <=> b.last }

或Enumerable#sort_by

golf.sort_by { |a| a.last }

使用Proc的第二个变体can be shortened

golf.sort_by(&:last)

Answer 2

只需在块中使用Array#sort

golf.sort { |x, y| x[1] <=> y[1] }
=> [["ScoreH", 1], ["ScoreB", 3], ["ScoreD", 4], ["ScoreF", 9], ["ScoreA", 10], ["ScoreJ", 23], ["ScoreG", 45], ["ScoreC", 67], ["ScoreI", 87], ["ScoreE", 88]]