Create reverse-prefix-of-word.cpp

Author: kamyu104

C++/reverse-prefix-of-word.cpp

@@ -0,0 +1,10 @@
+// Time:  O(n)
+// Space: O(1)
+
+class Solution {
+public:
+    string reversePrefix(string word, char ch) {
+        reverse(begin(word), begin(word) + 1 + word.find(ch));
+        return word;
+    }
+};