Added reverse-integer

Author: avidLearnerInProgress

reverse_integer.py

@@ -0,0 +1,12 @@
+class Solution:
+    def reverse(self, x: int) -> int:
+        if x == 0:
+            return 0
+        elif x < 0:
+            s = -1
+        else:   
+            s = 1
+        x = list(str(x * s))
+        x.reverse()
+        res = int("".join(x))
+        return res * s if res < 0x7fffffff else 0