冒泡排序

var arr = [11,2,6,555,45,89,23,76,12,35,99,44,8,123,999]

func bubbleSort (inout arr: Array<Int> ) -> Array<Int> {
    
    for i in 0..<arr.count {
        for j in 0..<arr.count-1 - i {
            if arr[j] > arr[j+1]{
                let temp = arr[j]
                arr[j] = arr[j+1]
                arr[j+1] = temp
                
            }
        }
    }
    return arr
}

 bubbleSort(&arr)