- @items=Hash.new
- puts "please input the number of your courses:"
- course_number=gets
- puts "please input your score and the balance"
- puts "---------------------------------------"
- for i in 1..course_number.to_i
- puts "input your score:"
- score=gets
- puts "input its balance:"
- balance=gets
- @items[score]=balance
- end
- sum=0
- total_credit=0
- @items.each_pair do |key,value|
- sum=sum+key.to_i*value.to_i
- end
- @items.each_value { |value|
- total_credit=total_credit+value.to_i
- }
- result=sum/total_credit
- puts "-------------------"
- puts "your balance average score is #{result}"
- #该片段来自于http://www.codesnippet.cn/detail/160420132835.html
来源: http://www.codesnippet.cn/detail/160420132835.html