題目

報數序列是一個整數序列，按照其中的整數的順序進行報數，得到下一個數。其前五項如下：
1.1
2.11
3.21
4.1211
5.111221

1 被讀作("一個一"), 即 11。
11 被讀作("兩個一"), 即 21。
21 被讀作("一個二", “一個一”), 即 1211。

給定一個正整數 n（1 ≤ n ≤ 30），輸出報數序列的第 n 項。
注意：整數順序將表示為一個字符串。

這個題有點奇葩，多讀幾遍就懂了

• 示例 1:
  輸入: 1
  輸出: “1”
• 示例 2：
  輸入: 4
  輸出: “1211”

代碼

class Solution(object):def countAndSay(self, n):""":type n: int:rtype: str"""d = '1'for i in range(n-1):tem = d[0]s = ''count = 0for x in d:if tem == x:count += 1continues += str(count) + temcount = 1tem = xs += str(count) + temd = sreturn d

• 其實這個比較快。。。。。。 抄襲自：@lwl

  class Solution(object):def countAndSay(self, n):""":type n: int:rtype: str"""di = 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di[n]

本文鏈接：時光不寫博客

總結

以上是生活随笔為你收集整理的LeetCode第38题：报数的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。