8. Magic Sum

8.	Magic Sum
Write a JS function, which prints all unique pairs in an array of integers whose sum is equal to a given number.

Examples:
Input										Output
['1 7 6 2 19 23', '8']						1 7
											6 2

['14 20 60 13 7 19 8', '27']				14 13
											20 7
											19 8

['1 2 3 4 5 6', '6']						1 5
											2 4