Initial data commit

Task/Damm-algorithm/R/damm-algorithm.r

@@ -0,0 +1,32 @@
+Damm_algo <- function(number){
+  row_i = 0
+
+  iterable = strsplit(toString(number), "")[[1]]
+
+  validation_matrix =
+    matrix(
+      c(
+        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),
+      nrow = 10, ncol = 10, byrow = T
+    )
+
+  for(digit in as.integer(iterable)){
+    row_i = validation_matrix[row_i + 1, digit + 1]    #in R indexes start from 1 and not from zero
+  }
+
+  test <- ifelse(row_i == 0, "VALID", "NOT VALID")
+  message(paste("Number", number, "is", test))
+}
+
+for(number in c(5724, 5727, 112946, 112949)){
+Damm_algo(number)
+  }