Reverse Words in a String
Given an input string
s, reverse the order of the words.A word is defined as a sequence of non-space characters. The words in
s will be separated by at least one space.Return a string of the words in reverse order concatenated by a single space.
Note that
s may contain leading or trailing spaces or multiple spaces between two words. The returned string should only have a single space separating the words. Do not include any extra spaces.1
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Example 1:
Input: s = "the sky is blue" Output: "blue is sky the"
Example 2:
Input: s = " hello world " Output: "world hello" Explanation: Your reversed string should not contain leading or trailing spaces.
Example 3:
Input: s = "a good example" Output: "example good a" Explanation: You need to reduce multiple spaces between two words to a single space in the reversed string.
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1 <= s.length <= 104
scontains English letters (upper-case and lower-case), digits, and spaces' '.
- There is at least one word in
s.
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