付款数字转中文大写

# 保留两位小数
def number_to_capital_zh(strno=nil)

	cCha = [['零元','零拾','零佰','零仟','零万','零亿','亿万','零零零','零零','零万','零亿','亿万','零元'], [ '元','零','零','零','万','亿','亿','零','零','万','亿','亿','元']]

	strno = strno.to_s.split(".")
	return "零元" if strno.blank?
	if strno.size > 1
	   result = (change_unit(strno.first.split("").reverse,"first").reverse  + change_unit(strno.last.to_f.round(2).split(""),"last")).join("") 
	else
	   result = (change_unit(strno.first.split("").reverse,"first").reverse).join("") +"整"
	end
	for m in 0..12
      result_number = result.gsub!(cCha[0][m], cCha[1][m])
    end
    return result_number
end

def change_unit(aske_no,unit)
	unit = %w(角 分)  if unit == "last"
	unit = %w(元 拾 佰 仟 万 拾 佰 仟 亿 拾 佰 仟 万 拾 佰 仟)  if unit == "first"
	number = {"0"=>"零","1"=>"壹","2"=>"贰","3"=>"叁","4"=>"肆","5"=>"伍","6"=>"陆","7"=>"柒","8"=>"捌","9"=>"玖"}
    result = []
	aske_no.each_with_index do |no,index|
	  result << number[no] + unit[index] 
	end
	result
end
 
 
test：
 number_to_capital_zh(324324.234343)
 => "叁拾贰万肆仟叁佰贰拾肆元贰角叁分"
 
number_to_capital_zh(32432443242343)
 => "叁拾贰万肆仟叁佰贰拾肆亿肆仟叁佰贰拾肆万贰仟叁佰肆拾叁元整"

number_to_capital_zh(111000100100)
 => "壹仟壹佰壹拾亿零壹拾万零壹佰元整"

number_to_capital_zh(11100010000)
 => "壹佰壹拾壹亿零壹万元整"

 number_to_capital_zh(1110000000)
 => "壹拾壹亿壹仟万元整"

number_to_capital_zh(1010000000)
 => "壹拾亿壹仟万元整"