A-M baby

Task/Multiplication-tables/Groovy/multiplication-tables.groovy

@@ -0,0 +1,19 @@
+def printMultTable = { size = 12 ->
+    assert size > 1
+
+    // factor1 line
+    print '  |'; (1..size).each { f1 -> printf('%4d', f1) }; println ''
+
+    // dividing line
+    print '--+'; (1..size).each { printf('----', it) }; println ''
+
+    // factor2 result lines
+    (1..size).each { f2 ->
+        printf('%2d|', f2)
+        (1..<f2).each{ print '    ' }
+        (f2..size).each{ f1 -> printf('%4d', f1*f2) }
+        println ''
+    }
+}
+
+printMultTable()