Write a function that takes a two-digit number and determines if it's the largest of two possible digit swaps.

To illustrate:

largest_swap(27) ➞ false

largest_swap(43) ➞ true

If 27 is our input, we should return false because swapping the digits gives us 72, and 72 > 27. On the other hand, swapping 43 gives us 34, and 43 > 34.

Examples

largest_swap(14) ➞ false

largest_swap(53) ➞ true

largest_swap(99) ➞ true

Notes

Numbers with two identical digits (third example) should yield true (you can't do better).