说我有和数组[4,1,8,5]和另一个对应于第一个数组中每个对象的数组,比如说["四","一个", "八","五"]。如何在升序中对第一个数组进行排序,同时将第二个数组中的相应对象移动到Swift中的相同索引?
答案 0 :(得分:2)
听起来不是最佳做法,但这可以解决您的问题:
var numbers = [4,7,8,3]
var numbersString = ["Four","Seven","Eight","Three"]
func bubbleSort<T,Y>(inout numbers:[T],inout _ mirrorArray: [Y], _ comapre : (T,T)->(Bool)) -> () {
let numbersLength = numbers.count
for i in 0 ..< numbersLength {
for j in 1 ..< numbersLength-i {
if comapre(numbers[j-1],numbers[j]) {
swap(&numbers[j-1], &numbers[j])
swap(&mirrorArray[j-1], &mirrorArray[j])
}
}
}
}
bubbleSort(&numbers,&numbersString) { (a, b) -> (Bool) in
a<b
}
print(numbers,numbersString)
*这是通用的,因此适用于任何类型,并允许您提供条件
答案 1 :(得分:0)
使用quick sort:
func quicksort_swift(inout a:[Int], inout b:[String], start:Int, end:Int) {
if (end - start < 2){
return
}
let p = a[start + (end - start)/2]
var l = start
var r = end - 1
while (l <= r){
if (a[l] < p){
l += 1
continue
}
if (a[r] > p){
r -= 1
continue
}
let t = a[l]
let t1 = b[l]
a[l] = a[r]
b[l] = b[r]
a[r] = t
b[r] = t1
l += 1
r -= 1
}
quicksort_swift(&a, b: &b, start: start, end: r + 1)
quicksort_swift(&a, b: &b, start: r + 1, end: end)
}
虽然@NSNoob提供的词典解决方案应该更快更优雅。