Data update

Task/Damm-algorithm/BASIC256/damm-algorithm.basic

@@ -0,0 +1,22 @@
+arraybase 1
+global matrix
+matrix = {{0, 3, 1, 7, 5, 9, 8, 6, 4, 2}, {7, 0, 9, 2, 1, 5, 4, 8, 6, 3}, {4, 2, 0, 6, 8, 7, 1, 3, 5, 9}, {1, 7, 5, 0, 9, 8, 3, 4, 2, 6}, {6, 1, 2, 3, 0, 4, 5, 9, 7, 8}, {3, 6, 7, 4, 2, 0, 9, 5, 8, 1}, {5, 8, 6, 9, 7, 2, 0, 1, 3, 4}, {8, 9, 4, 5, 3, 6, 2, 0, 1, 7}, {9, 4, 3, 8, 6, 1, 7, 2, 0, 5}, {2, 5, 8, 1, 4, 3, 6, 7, 9, 0}}
+test = {5724, 5727, 112946}
+
+for i = 1 to 3
+	print "Checksum test: "; rjust(string(test[i]),8); encode(test[i])
+next i
+end
+
+function encode(n)
+	cad = string(n)
+	check = 0
+	for d = 1 to length(cad)
+		check = matrix[int(mid(cad, d, 1)), d]
+	next d
+	if check = 0 then
+		return " is valid"
+	else
+		return " is invalid"
+	end if
+end function