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Tested Python solution for LeetCode 557 with 14 pytest cases. Generate a practice environment with lcpy.
lcpy gen -n 557 # by problem number
lcpy gen -s reverse_words_in_a_string_iii # by problem name
s, reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order.
Input: s = "Let's take LeetCode contest"
Output: "s'teL ekat edoCteeL tsetnoc"
Input: s = "Mr Ding"
Output: "rM gniD"
s contains printable ASCII characters.s does not contain any leading or trailing spaces.s.s are separated by a single space.class Solution:
# Time: O(n)
# Space: O(n)
def reverse_words(self, s: str) -> str:
return " ".join(word[::-1] for word in s.split(" "))
| Time | Space |
|---|---|
| O(n) | O(n) |