151. Reverse Words in a String翻转一句话中的单词 [抄题]: Given an input string, reverse the string word by word. Example: the skyisblue blueissky the [暴力解法]: 时间分析: 空间分析: [优化后]: 时间分析: 空间分析: [奇葩输出条件]: [奇葩corner case]: [思维问题]: 打碎成数组后再添加...
一刷: 如果是in-place的替换,思路不那么容易想到。首先全部reverse, 然后再局部每个单词reverse
然后就用一个string res每次都从队列将的单词取出来,然后判断是否队列为空,不为空就加一个空格。 代码: 1classSolution {2public:3stringreverseWords(strings) {4intn=s.size();5deque<string>q;6stringword="";7intleft=0,right=n-1;8while(left<=right&&s[left]=='') left++;9while(left<=right&...
A sequence of non-space characters constitutes a word. Could the input string contain leading or trailing spaces? Yes. However, your reversed string should not contain leading or trailing spaces. How about multiple spaces between two words? Reduce them to a single space in the reversed string. ...
Reverse Words in a String Given an input string, reverse the string word by word. For example, Given s = "the sky is blue", return "blue is sky the". Update (2015-02-12): For C programmers: Try to solve it in-place in O(1) space. ...
Other Words From re·vers·ed·ly[ri-, vur, -sid-lee, -, vurst, -lee], adverb re·verse lyadverb re·vers ernoun half -re·versed adjective non re·verse adjective noun non re·versed adjective non re·vers ingadjective pre re·verse noun verb (used with object)prereversedprereversi...
in-place算法一般要使用两个指针,一个指针负责遍历,另一个指针负责拷贝覆盖。 时间复杂度 O(n) 空间复杂度 O(1) 代码 classSolution{public:voidreverseWords(string&s){reverse(s.begin(),s.end());intk=0;for(inti=0;i<s.size();i++){if(s[i]!=' '){if(k!=0)s[k++]=' ';intj=i;whi...
Why is '-ed' sometimes pronounced at the end of a word? Popular in Wordplay See All Terroir, Oenophile, & Magnum: Ten Words About Wine 8 Words for Lesser-Known Musical Instruments 10 Words from Taylor Swift Songs (Merriam's Version) ...
class Solution: def reverseWords(self, s: str) -> str: # 3. 最后用 ' ' 将 words 中的全部单词连起来 return ' '.join( # 2. 再将 words 中的每个单词翻转 word[::-1] # 1. 先将 s 按照 ' ' 分隔成多个单词 for word in s.split(' ') ) 代码(Go) func reverseWords(s string) ...
Word History First Known Use 1921, in the meaning defined above Time Traveler The first known use of reverse osmosis was in 1921 See more words from the same year Dictionary Entries Near reverse osmosis reverse oneself reverse osmosis reverse painting See More Nearby Entries Cite this ...