Data commit

Task/Levenshtein-distance-Alignment/Python/levenshtein-distance-alignment.py

@@ -0,0 +1,21 @@
+from difflib import ndiff
+
+def levenshtein(str1, str2):
+    result = ""
+    pos, removed = 0, 0
+    for x in ndiff(str1, str2):
+        if pos<len(str1) and str1[pos] == x[2]:
+          pos += 1
+          result += x[2]
+          if x[0] == "-":
+              removed += 1
+          continue
+        else:
+          if removed > 0:
+            removed -=1
+          else:
+            result += "-"
+    print(result)
+
+levenshtein("place","palace")
+levenshtein("rosettacode","raisethysword")