Talk:Palindromic gapful numbers: Difference between revisions
Nice Recursive Solution/Definition
(added a new talk section.) |
(Nice Recursive Solution/Definition) |
||
Line 1:
==Nice Recursive Solution/Definition==
If I let f<sub>1</sub> = 0..1..9 and f<sub>2</sub> = 0..11..99 then f<sub>3</sub> is xyx where x is 0..1..9 and y is 10*f<sub>1</sub>. In general f<sub>n</sub> is (x<sup>n-1</sup>+x)+n*f<sub>n-2</sub>. For all palindromic numbers x=0 is invalid for outermost pair. Not a problem for this task as you will wish to choose x to be the ending for each set. F# can implement this and execute the entire task in less than 35 thousandths of a sec so sufficiently optimal.
--[[User:Nigel Galloway|Nigel Galloway]] ([[User talk:Nigel Galloway|talk]]) 15:07, 3 December 2020 (UTC)
==Please clarify==
I don't understand the second and third part of the requirements.
| |||