I'm having trouble doing a challenge in ruby about palindromes.
I actually looked too many sources and i think my brain melted a bit as i am a novice programmer.
Lemme sum up the question :
So from user we get beginning value ending value, and a depth value.We take the beginning value and check If the number is a palindrome,if it isn't then we add its reversed to itself( 20, reverse(20)=02, add , 22) and check the number we find if its a palindrome.If it isn't we take the calculated number and add its reversed to itself.But we only can do that "depth" value times.
And print if we find a palindrome through those calculations we print value ----> xxxx if not we print value ----> special number.
I'm able to find palindromes, through given and ending value.But i just cant implement the depth thing.My problem looks a lot like Setting a Limit on loops and calculating palindromes in C programming but since i'm a ruby novice i cant make sense of C for now.Any help will be appreciated.
Edit : We do that like x to y , beginning value to ending value, like if they type 20 as beginning and 30 as ending value, we check 20 if its a palindrome add its reversed etc.Once we finish checking it we check the next number, 21 then 22,23... to 30.
def doit(n, max_tries) max_tries.times.each do rev = n.to_s.reverse.to_i (n == rev) ? (return n) : n += rev end nil end doit(22, 1) #=> 22 doit(21, 1) #=> nil doit(21, 2) #=> 33 doit(137, 1) #=> nil doit(137, 2) #=> 868 doit(1373, 2) #=> nil doit(1373, 3) #=> 9119 doit(13732, 9) #=> nil doit(13732, 10) #=> 134202431