Strobogrammatic Number

Author: saurabhchris1

Strobogrammatic_Number.py

@@ -0,0 +1,37 @@
+# A strobogrammatic number is a number that looks the same when rotated 180 degrees (looked at upside down).
+#
+# Write a function to determine if a number is strobogrammatic. The number is represented as a string.
+#
+# Example 1:
+#
+# Input:  "69"
+# Output: true
+# Example 2:
+#
+# Input:  "88"
+# Output: true
+# Example 3:
+#
+# Input:  "962"
+# Output: false
+
+
+class Solution:
+    def isStrobogrammatic(self, num):
+        dict = {'6': '9', '9': '6', '8': '8', '0': '0', '1': '1'}
+
+        pointer = len(num) - 1
+        nums = []
+        while pointer >= 0:
+            if num[pointer] not in dict:
+                return False
+
+            nums.append(dict[num[pointer]])
+            pointer -= 1
+
+        rotate = "".join(nums)
+
+        if rotate != num:
+            return False
+
+        return True