题解 | #人民币转换#

ls = "零壹贰叁肆伍陆柒捌玖"
x = "元拾佰仟万亿角分整"

# 万元以内
def read_thousand(num:int)-> str:
    one = ""
    ten = ""
    hundred = ""
    thounsand = ""
    res_ls = [thounsand,hundred,ten,one]
    for i in range(1,5):
        k = int(num%10)
        num = num//10
        if k :
            res_ls[-i] = ls[k] + x[i-1]
    #当中间存在0的时候，添加一个零
    temp = 0
    c = 0
    for i in range(len(res_ls)):
        if temp != len(res_ls[i]):
            c += 1
            temp = len(res_ls[i])
        if c == 2:
            res_ls[i] = ls[0]
            c += 1

    if res_ls[-1] != "" or res_ls[-1] == ls[0]:
        return "".join(res_ls)[:-1]
    else:
        return "".join(res_ls) #去掉0或者去掉元

string = ""

def app(num:int) ->str:
    string = ""
    length = len(str(num))
    if length <= 4:
        string = read_thousand(num)
    elif length <= 8:
        re = int(num % 10e3)
        dt = int(num // 10e3)
        string = app(dt) + x[4] + app(re)
        
    else:
        re = int(num % 10e7)
        dt = int(num // 10e7)
        string = app(dt) + x[5] + app(re)
    return string


num = float(input())
res = "人民币"
#小数部分
laststr = ""

if int(round(num * 100) % 100) == 0:
    laststr = x[-1]
else:
    a = int(round(num*100) % 100)
    #a // 10 为多少角
    if a//10 != 0:
        laststr  += ls[a//10] + x[6]
    #a % 10 为多少分
    if a % 10 != 0:
        laststr += ls[a%10] + x[7]
    

#整数部分
bignum = int(num * 100 //100)
bignumstr = app(bignum).replace("壹拾","拾")

if int(num) == 0 and int(num * 100 % 100) == 0:
    print("人民币零元整")
elif len(bignumstr) == 0:
    finalstr =res + laststr
    print(finalstr)
else:
    finalstr =res + bignumstr +"元" + laststr
    print(finalstr)