leetcode with python:412. Fizz Buzz

python3 leetcode 刷題

ko_min 2022-07-27 21:56:12 ‧ 896 瀏覽

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題目:

Given an integer n, return a string array answer (1-indexed) where:

answer[i] == "FizzBuzz" if i is divisible by 3 and 5.
answer[i] == "Fizz" if i is divisible by 3.
answer[i] == "Buzz" if i is divisible by 5.
answer[i] == i (as a string) if none of the above conditions are true.

給定一數n,返回一個由字串組成的陣列,規則如下:
若x可被3和5整除,陣列第x個元素為"FizzBuzz"
若x僅可被3整除,陣列第x個元素為"Fizz"
若x僅可被5整除,陣列第x個元素為"Buzz"
若x不可被3和5整除,陣列第x個元素為x的字串型態
ex:input:15=>output: ["1","2","Fizz","4","Buzz","Fizz","7","8","Fizz","Buzz","11","Fizz","13","14","FizzBuzz"]

我們對1~n的數(i)全部進行判斷

class Solution:
    def fizzBuzz(self, n: int) -> List[str]:
        ans=[]
        for i in range(1,n+1):
            temp=''
            if i % 3==0:
                temp=temp+"Fizz"
            if i % 5==0:
                temp=temp+"Buzz"
                
            if temp=='':
                ans.append(str(i))
            else:
                ans.append(temp)        
        return ans

每次判斷都設立一個空字串(temp)
若i可被3整除,在temp尾端加上"Fizz"
若i可被5整除,在temp尾端加上"Buzz"
要是temp經判斷完是空字串,則於要回傳的陣列(ans)append i的字串型態
反之則直接append temp
最後執行時間42ms(faster than 95.59%)

那我們下題見

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1 則留言

一級屠豬士

iT邦大師 1 級 ‧ 2022-07-31 21:58:10

x = [ 'Fizz' * (n % 3 == 0) + 'Buzz' * (n % 5 == 0) or str(n) for n in range(1,46) ]
print(x)

['1', '2', 'Fizz', '4', 'Buzz', 'Fizz', '7', '8', 'Fizz', 'Buzz', '11', 'Fizz', '13', '14', 'FizzBuzz', '16', '17', 'Fizz', '19', 'Buzz', 'Fizz', '22', '23', 'Fizz', 'Buzz', '26', 'Fizz', '28', '29', 'FizzBuzz', '31', '32', 'Fizz', '34', 'Buzz', 'Fizz', '37', '38', 'Fizz', 'Buzz', '41', 'Fizz', '43', '44', 'FizzBuzz']