added python solution for Problem 04

Author: ashmichheda

solution/0004.Median of Two Sorted Arrays/Solution.py

@@ -0,0 +1,12 @@
+class Solution:
+    def findMedianSortedArrays(self, nums1: List[int], nums2: List[int]) -> float:
+       # concatenate the 2 lists and sort them
+        nums1 += nums2
+        nums1.sort()
+        length = len(nums1)
+        value = length/2
+        if length % 2 == 0:
+            value = int(value)
+            return (nums1[value-1] + nums1[value])/2
+        else:
+            return nums1[int(value)]

solution/README.md

@@ -32,6 +32,7 @@
 │   ├── Solution.go
 │   ├── Solution.java
 │   └── Solution.js
+│   └── Solution.py
 ├── 0005.Longest Palindromic Substring
 │   ├── README.md
 │   ├── Solution.go