https://leetcode.com/problems/minimize-maximum-pair-sum-in-array/
func minPairSum(_ nums: [Int]) -> Int {
var result = 0
var mynums = nums
var resultNums: [Int] = []
mynums.sort(by: <)
for i in 0..<mynums.count / 2 {
resultNums.append(mynums[i] + mynums[mynums.count - i - 1])
}
print(resultNums)
for i in 0..<resultNums.count {
result = max(result, resultNums[i])
}
return result
}