https://leetcode.com/problems/check-if-one-string-swap-can-make-strings-equal

easy/check_if_one_string_swap_can_make_strings_equals.py

@@ -0,0 +1,21 @@
+# https://leetcode.com/problems/check-if-one-string-swap-can-make-strings-equal
+
+from typing import Optional
+
+class Solution:
+    def areAlmostEqual(self, s1: str, s2: str) -> bool:
+        first: Optional[int] = None
+        second: Optional[int] = None
+        for i in range(len(s1)):
+            if s1[i] == s2[i]:
+                continue
+            if first is not None:
+                if second is not None:
+                    return False
+                if s1[first] != s2[i] or s1[i] != s2[first]:
+                    return False
+                second = i
+            else:
+                first = i
+        return not ((first is None) ^ (second is None))
+