Create Isomorphic-Strings.py

Author: AG-Systems

Leetcode/Isomorphic-Strings.py

@@ -0,0 +1,19 @@
+class Solution:
+    def isIsomorphic(self, s: str, t: str) -> bool:
+        if len(s) == 0:
+            return True
+        
+        replaced_s = [""] * len(s)
+        letter_table = {}
+        char_set = set()
+        for index in range(0, len(s)):
+            digit = s[index]
+            if not digit in letter_table:
+                letter_table[digit] = t[index] 
+                if t[index] not in char_set:
+                    char_set.add(t[index])
+                else:
+                    return False
+            replaced_s[index] = letter_table[digit]
+        replaced_s = "".join(replaced_s)
+        return replaced_s == t