Day 16.1.txt

557. Reverse Words in a String III

Given a string s, reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order.

 

Example 1:

Input: s = "Let's take LeetCode contest"
Output: "s'teL ekat edoCteeL tsetnoc"
Example 2:

Input: s = "God Ding"
Output: "doG gniD"
 

Constraints:

1 <= s.length <= 5 * 104
s contains printable ASCII characters.
s does not contain any leading or trailing spaces.
There is at least one word in s.
All the words in s are separated by a single space.



class Solution {
    public String reverseWords(String s) {
        s=s.trim();
        int i;
        char c;
        String p="",q="";
        for(i=0;i<s.length();i++)
        {
            c=s.charAt(i);
            if(c==' ')
            {
                p=p+q+" ";
                q="";
            }
            else
            {
                q=s.charAt(i)+q;
            }
        }
        return p+q;
    }
}