wagner-fisher & werner algorithms working

wagner-fisher.go

@@ -0,0 +1,14 @@
+package editdistance
+
+func WagnerFisher(a, b string) int {
+	if len(a) == 0 {
+		return len(b)
+	}
+	if len(b) == 0 {
+		return len(a)
+	}
+	if a[0] == b[0] {
+		return WagnerFisher(a[1:], b[1:])
+	}
+	return 1 + min(WagnerFisher(a[1:], b), WagnerFisher(a, b[1:]), WagnerFisher(a[1:], b[1:]))
+}