Return the Highest and Lowest Numbers

Create a function that accepts a string of space separated integers and returns the highest and lowest integers (as a string).

Examples

high_low("1 2 3 4 5") ➞ "5 1"

high_low("1 2 -3 4 5") ➞ "5 -3"

high_low("1 9 3 4 -5") ➞ "9 -5"

high_low("13") ➞ "13 13"

Notes

• All integers are valid, no need to validate them.
• There will always be at least one integer in the input string.
• Output string must be two integers separated by a single space, and highest number is first.