added code for reverse integer

Author: Anubha13kumari

.github/Reverseint.py

@@ -0,0 +1,7 @@
+class Solution:
+    def reverse(self, x):
+        range_ = range(-2**31, 2**31-1)
+        y = str(abs(x))
+        if x == 0 or x not in range_: return 0
+        x = int('-' + y[::-1]) if x < 0 else int(y[::-1])
+        return x if x in range_ else 0