Create 50-Pow(x, n)

Author: neetcode-gh

50-Pow(x, n)

@@ -0,0 +1,11 @@
+class Solution:
+    def myPow(self, x: float, n: int) -> float:
+        def helper(x, n):
+            if x == 0: return 0
+            if n == 0: return 1
+            
+            res = helper(x * x, n // 2)
+            return x * res if n % 2 else res
+        
+        res = helper(x, abs(n))
+        return res if n >= 0 else 1 / res