tasks a-s

Task/Order-two-numerical-lists/Groovy/order-two-numerical-lists-1.groovy

@@ -0,0 +1,10 @@
+class CList extends ArrayList implements Comparable {
+    CList() { }
+    CList(Collection c) { super(c) }
+    int compareTo(Object that) {
+        assert that instanceof List
+        def n = [this.size(), that.size()].min()
+        def comp = [this[0..<n], that[0..<n]].transpose().find { it[0] != it[1] }
+        comp ? comp[0] <=> comp[1] : this.size() <=> that.size()
+    }
+}

Task/Order-two-numerical-lists/Groovy/order-two-numerical-lists-2.groovy

@@ -0,0 +1,9 @@
+CList a, b; (a, b) = [[], []]; assert ! (a < b)
+b = [1] as CList;              assert   (a < b)
+a = [1] as CList;              assert ! (a < b)
+b = [2] as CList;              assert   (a < b)
+a = [2, -1, 0] as CList;       assert ! (a < b)
+b = [2, -1] as CList;          assert ! (a < b)
+b = [2, -1, 0] as CList;       assert ! (a < b)
+b = [2, -1, 0, -17] as CList;  assert   (a < b)
+a = [2,  8, 0] as CList;       assert ! (a < b)