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CheckiO 是面向初學者和高級程序員的編碼游戲，使用 Python 和 JavaScript 解決棘手的挑戰和有趣的任務，從而提高你的編碼技能，本博客主要記錄自己用 Python 在闖關時的做題思路和實現代碼，同時也學習學習其他大神寫的代碼。

CheckiO 官網：https://checkio.org/

我的 CheckiO 主頁：https://py.checkio.org/user/TRHX/

CheckiO 題解系列專欄：https://itrhx.blog.csdn.net/category_9536424.html

CheckiO 所有題解源代碼：https://github.com/TRHX/Python-CheckiO-Exercise

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題目描述

【Speech Module】：輸入一個數字，將其轉換成英文表達形式，字符串中的所有單詞必須以一個空格字符分隔。

【鏈接】：https://py.checkio.org/mission/speechmodule/

【輸入】：一個數字（int）

【輸出】：代表數字的英文字符串（str）

【前提】：0 < number < 1000

【范例】：

checkio(4)=='four' checkio(143)=='one hundred forty three' checkio(12)=='twelve' checkio(101)=='one hundred one' checkio(212)=='two hundred twelve' checkio(40)=='forty'

解題思路

將輸入的數字分為四種情況：

• 0 ≤ 數字 < 10：直接返回 FIRST_TEN[number - 1] 即可；

• 10 ≤ 數字 < 20：直接返回 SECOND_TEN[number - 10] 即可；

• 20 ≤ 數字 < 100：如果是 10 的倍數（number % 10 == 0），直接返回 OTHER_TENS[number // 10 - 2] 即可，如果不是 10 的倍數（number % 10 != 0），那么就要將其十位和個位連起來，即：OTHER_TENS[number // 10 - 2] + ' ' + FIRST_TEN[number % 10 - 1]；

• 100 ≤ 數字 < 999：與第三種情況類似，實現判斷是不是 100 的倍數，如果是則直接返回 FIRST_TEN[number // 100 - 1] + ' ' + HUNDRED，如果不是，則判斷其除以 100 的余數是不是 10 的倍數，也就是后兩位是不是 10 的倍數，即重復第三步即可。

代碼實現

FIRST_TEN = ["one", "two", "three", "four", "five", "six", "seven","eight", "nine"] SECOND_TEN = ["ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen","sixteen", "seventeen", "eighteen", "nineteen"] OTHER_TENS = ["twenty", "thirty", "forty", "fifty", "sixty", "seventy","eighty", "ninety"] HUNDRED = "hundred"def checkio(number):if 0 <= number < 10:english = FIRST_TEN[number - 1]return englishelif 10 <= number < 20:english = SECOND_TEN[number - 10]return englishelif 20 <= number < 100:if number % 10 == 0:english = OTHER_TENS[number // 10 - 2]return englishelse:english = OTHER_TENS[number // 10 - 2] + ' ' + FIRST_TEN[number % 10 - 1]return englishelse:if number % 100 == 0:english = FIRST_TEN[number // 100 - 1] + ' ' + HUNDREDreturn englishelse:english = FIRST_TEN[number // 100 - 1] + ' ' + HUNDRED + ' ' + checkio(number % 100)return englishif __name__ == '__main__':# These "asserts" using only for self-checking and not necessary for auto-testingassert checkio(4) == 'four', "1st example"assert checkio(133) == 'one hundred thirty three', "2nd example"assert checkio(12) == 'twelve', "3rd example"assert checkio(101) == 'one hundred one', "4th example"assert checkio(212) == 'two hundred twelve', "5th example"assert checkio(40) == 'forty', "6th example"assert not checkio(212).endswith(' '), "Don't forget strip whitespaces at the end of string"print('Done! Go and Check it!')

大神解答

大神解答 NO.1

FIRST_TEN = ["one", "two", "three", "four", "five", "six", "seven","eight", "nine"] SECOND_TEN = ["ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen","sixteen", "seventeen", "eighteen", "nineteen"] OTHER_TENS = ["twenty", "thirty", "forty", "fifty", "sixty", "seventy","eighty", "ninety"] HUNDRED = "hundred"def checkio(number):n = number // 100t = [FIRST_TEN[n-1], HUNDRED] if n > 0 else []n = (number // 10) % 10t += [OTHER_TENS[n-2]] if n > 1 else []n = number % (10 if n > 1 else 20)t += [(FIRST_TEN+SECOND_TEN)[n-1]] if n > 0 else []return ' '.join(t)

大神解答 NO.2

# migrated from python 2.7 def checkio(number):l=["","one","two","three","four","five","six","seven","eight","nine","ten","eleven","twelve","thirteen","fourteen","fifteen","sixteen","seventeen","eighteen","nineteen","twenty"]d=dict(enumerate(l))d.update({30:"thirty",40:"forty",50:"fifty",60:"sixty",70:"seventy",80:"eighty",90:"ninety"})h=number//100if h:return (d[h]+" hundred "+checkio(number%100)).strip()if number in d:return d[number]return d[number//10*10]+" "+d[number%10]

大神解答 NO.3

def checkio(n, d=dict(enumerate(" one two three four five six seven eight nine ten eleven twelve".split(" ")))):def i(s, j=iter("o en ree ir ve f t ".split(" "))):for k in j: s = __import__("re").sub(k + "$", next(j), s)return sreturn(d[n//100]+" hundred "*(n>99)+d.get(n%100,n%100<20and i(d[n%10])+"teen"or i(d[n//10%10]).replace("u","")+"ty "+d[n%10])).strip()

大神解答 NO.4

FIRST_TEN = ["one", "two", "three", "four", "five", "six", "seven","eight", "nine"] SECOND_TEN = ["ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen","sixteen", "seventeen", "eighteen", "nineteen"] OTHER_TENS = ["twenty", "thirty", "forty", "fifty", "sixty", "seventy","eighty", "ninety"] HUNDRED = "hundred"def checkio(number):ret =''h = number//100t = (number - h*100)//10f = number - h*100 - t*10if h > 0:ret += FIRST_TEN[h-1] + ' ' + HUNDRED + ' 'if t == 0 and f > 0:ret += FIRST_TEN[f-1] + ' 'elif t == 1:ret += SECOND_TEN[f] + ' 'elif t>1:ret += OTHER_TENS[t-2] + ' 'if f>0:ret += FIRST_TEN[f-1] + ' 'return ret[:-1]

總結

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