September 2017 Update

Task/Twelve-statements/Sidef/twelve-statements.sidef

@@ -0,0 +1,26 @@
+var conditions = [
+    { false },
+    {|a| a.len == 13 },
+    {|a| Math.sum(a[7..12]) == 3 },
+    {|a| Math.sum(a[2..12 `by` 2]) == 2 },
+    {|a| a[5] ? (a[6] && a[7]) : true },
+    {|a| !a[2] && !a[3] && !a[4] },
+    {|a| Math.sum(a[1..11 `by` 2]) == 4 },
+    {|a| a[2] == true^a[3] },
+    {|a| a[7] ? (a[5] && a[6]) : true },
+    {|a| Math.sum(a[1..6])  == 3 },
+    {|a| Math.sum(a[11,12]) == 2 },
+    {|a| Math.sum(a[7..9])  == 1 },
+    {|a| Math.sum(a[1..11]) == 4 },
+]
+
+func miss(args) {
+    1..12 -> grep {|i| conditions[i](args) != args[i] }
+}
+
+for k in (^(1<<12)) {
+  var t  = ("0%012b" % k -> chars.map {|bit| bit == '1' ? true : false })
+  var no = miss(t)
+  no.len == 0 && say "Solution: true statements are #{1..12->grep{t[_]}.join(' ')}"
+  no.len == 1 && say "1 miss (#{no[0]}): true statements are #{1..12->grep{t[_]}.join(' ')}"
+}