add python solution for Problem 50

Author: ashmichheda

solution/0050.Pow(x, n)/Solution.py

@@ -0,0 +1,21 @@
+class Solution:
+    def myPow(self, x: float, n: int) -> float:
+        
+        """
+        :type x: float
+        :type n: int
+        :rtype: float
+        """
+        
+        answer = 1
+        if x == 1 or n == 0:
+            return 1
+        if x == -1:
+            return 1 if n%2 == 0 else -1
+
+        for i in range(abs(n)):
+            answer *= x
+            if (abs(answer) < 10 ** -5 and n > 0) or (abs(answer) > 10 ** 5 and n < 0):
+                return 0            
+        
+        return answer if n > 0 else 1/answer

solution/README.md

@@ -249,6 +249,7 @@
 ├── 0050.Pow(x, n)
 │   ├── Solution.java
 │   └── Solution.js
+│   └── Solution.py
 ├── 0051.N-Queens
 │   └── Solution.java
 ├── 0052.N-Queens II