Program to reverse word in a string

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”

Solution:

string reverseWords(string s) {
int n = s.length();
if(n==0){
return s;
}

stringstream check1(s);
string interm;
string ans = "";

while(getline(check1,interm,' ')){
    reverse(interm.begin(), interm.end());
    ans += interm;
    ans += " ";
}

return ans.substr(0, n);
}

};