ReverseAndNot

Write a function that takes an integer i and returns an integer with the integer backwards followed by the original integer.

To illustrate:

123

We reverse 123 to get 321 and then add 123 to the end, resulting in 321123.

Examples

reverse_and_not(123) ➞ 321123

reverse_and_not(152) ➞ 251152

reverse_and_not(123456789) ➞ 987654321123456789

Notes

i is a non-negative integer.