Largest palindrome product: Difference between revisions

Content added Content deleted

Inline

@@ Line 165: / Line 165: @@
         // we assume here the palindromes will end in 9
         if (p % 10 != 9) continue
-        for (k in high..low+1) {
+        // k can't be even nor end in 5 to produce a product ending in 9
-            var l = p / k
+        var k = high
-            if (l > high) break
+        while (k > low) {
-            if (p % k == 0) {
+            if (k % 10 != 5) {
-                System.print("%(k) x %(l) = %(p)")
+                var l = p / k
-                nextN = true
+                if (l > high) break
-                break
+                if (p % k == 0) {
+                    System.print("%(k) x %(l) = %(p)")
+                    nextN = true
+                    break
+                }
             }
+            k = k - 2
         }
         if (nextN) break