首页 > 代码库 > [LeetCode]-Reverse Words in a String
[LeetCode]-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".
Clarification:
- What constitutes a word?
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.
1 public class Solution { 2 private void reverseWord( char[] arr, int start, int end ){ 3 char temp; 4 while( start<end ){ 5 temp = arr[start]; 6 arr[start] = arr[end]; 7 arr[end] = temp; 8 start++; 9 end--;10 }11 }12 13 public String reverseWords(String s) {14 String str = s.trim().replaceAll("\\s+", " ");15 int len = str.length();16 char[] arr_str = str.toCharArray();17 int start = 0;18 int end = 0;19 while( start<len ){20 end = start;21 while( end<len && arr_str[end]!=‘ ‘ ){22 end++;23 }24 reverseWord( arr_str, start, end-1 );25 start = end+1;26 }27 reverseWord( arr_str, 0, len-1 );28 return new String( arr_str ); 29 }30 }
[LeetCode]-Reverse Words in a String
声明：以上内容来自用户投稿及互联网公开渠道收集整理发布，本网站不拥有所有权，未作人工编辑处理，也不承担相关法律责任，若内容有误或涉及侵权可进行投诉： 投诉/举报 工作人员会在5个工作日内联系你，一经查实，本站将立刻删除涉嫌侵权内容。