reverse string sol

Easy/cpp_ReverseString/reverseString.cpp

@@ -0,0 +1,25 @@
+class Solution {
+public:
+    string reverseWords(string s) {
+        reverse(s.begin(), s.end());
+        int n = s.size();
+        int left = 0;
+        int right = 0;
+        int i = 0;
+        while (i < n) {
+            while (i < n && s[i] == ' ')
+                i++;
+            if (i == n)
+                break;
+            while (i < n && s[i] != ' ') {
+                s[right++] = s[i++];
+            }
+            reverse(s.begin() + left, s.begin() + right);
+            s[right++] = ' ';
+            left = right;
+            i++;
+        }
+        s.resize(right - 1);
+        return s;
+    }
+};