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Task/Bulls-and-cows/Sidef/bulls-and-cows.sidef

@@ -0,0 +1,35 @@
+var size = 4
+var num = @(1..9).shuffle.first(size)
+
+for (var guesses = 1; true; guesses++) {
+
+    var bulls = 0
+    var cows  = 0
+
+    var input = Sys.scanln("Input: ").chars                \
+                                     .unique               \
+                                     .grep {.~~/^[1-9]$/}  \
+                                     .map  {.to_i}
+
+    if (input.len != size) {
+        warn "Invalid input!\n"
+        guesses--
+        next
+    }
+
+    if (input == num) {
+        printf("You did it in %d attempts!\n", guesses)
+        break
+    }
+
+    num.range.each { |i|
+        if (num[i] == input[i]) {
+            bulls++
+        }
+        elsif (num.contains(input[i])) {
+            cows++
+        }
+    }
+
+    "Bulls: %d; Cows: %d\n".printf(bulls, cows)
+}