代码随想录算法训练营第四十六天| 139.单词拆分

代码随想录算法训练营第四十六天

  • 139.单词拆分

139.单词拆分

代码

#  !/usr/bin/env  python
#  -*- coding:utf-8 -*-
# @Time   :  2022.12
# @Author :  hello algorithm!
# @Note   :  https://leetcode.cn/problems/word-break/
from typing import List


class Solution:
    """

    """

    def wordBreak(self, s: str, wordDict: List[str]) -> bool:
        dp = [False] * (len(s) + 1)
        dp[0] = True
        for j in range(1, len(s) + 1):
            for i in range(len(wordDict)):
                word = wordDict[i]
                length = len(word)
                if j >= length and dp[j - length] and word == s[j - length:j] or dp[j]:
                    dp[j] = True
                else:
                    dp[j] = False
        return dp[len(s)]


if __name__ == '__main__':
    s = "applepenapple"
    wordDict = ["apple", "pen"]
    ss = Solution()
    print(ss.wordBreak(s, wordDict))

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