324. Wiggle Sort II

  func wiggleSort(_ nums: inout [Int]) {
        var sortedNums = nums.sorted()
        let n = nums.count
        for i in stride(from: 1, to:n , by: 2) {
            nums[i] = sortedNums.removeLast()
        }

        for i in stride(from: 0, to:n , by: 2) {
            nums[i] = sortedNums.removeLast()
        }
    }