my £numbers = "2 1 3 4 5";
@numbers = split(' ', £numbers); //I am a beginer, i know this is inefficient but it helps me follow my work better.

my $input = <>;

// say iput is "3"
// i want something similar to

print $numbers[$input];

// prints 4 as 4 is the "3rd" position in numbers.

//basically $numbers[3]; 
//but what is in [] can be decided by the input of <>