question/reverse a string

-Add new question reverse a string

Beginner Level 📁/Reverse a string/question.md

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+You are given a string s.You need to reverse the string.
+
+Examples:
+
+```
+Input: s="Geeks"
+Outpur: "skeeG"
+```
+
+Expected Time Complexity: O(|s|)
+Expected Auxiliary Space: O(1)
+
+Constraints:
+1<=|s|<=10^4

Beginner Level 📁/Reverse a string/solution.cpp

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+class Solution
+{
+public:
+    string reverseWord(string str)
+    {
+        reverse(str.begin(), str.end());
+        return str;
+    }
+};