Catalan numbers: Difference between revisions

Content added Content deleted

Inline

@@ Line 1,900: / Line 1,900: @@
     fun catI(n: Int): Double {
         if (n !in catsI)
-            catsI[n] = fact(2 * n) / (fact(n + 1) * fact(n))
+            catsI[n] = Math.round(fact(2 * n) / (fact(n + 1) * fact(n))).toDouble()
-        return Math.round(catsI[n]).toDouble()
+        return catsI[n]
     }
@@ Line 1,912: / Line 1,912: @@
         for (i in 0..n - 1)
             sum += catR1(i) * catR1(n - 1 - i)
+        sum = Math.round(sum).toDouble()
         catsR1[n] = sum
-        return Math.round(sum).toDouble()
+        return sum
     }
     fun catR2(n: Int): Double {
         if (n !in catsR2)
-            catsR2[n] = 2.0 * (2 * (n - 1) + 1) / (n + 1) * catR2(n - 1)
+            catsR2[n] = Math.round(2.0 * (2 * (n - 1) + 1) / (n + 1) * catR2(n - 1)).toDouble()
-        return Math.round(catsR2[n]).toDouble()
+        return catsR2[n]
     }