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nuomi1
2023-01-08 20:53:24 +08:00
parent 7556558704
commit 3b52df2a8f
7 changed files with 55 additions and 54 deletions
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14
docs/chapter_array_and_linkedlist/array.md
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@@ -84,7 +84,7 @@ comments: true
=== "Swift"
```swift title="array.swift"
// 初始化数组
/* 初始化数组 */
let arr = Array(repeating: 0, count: 5) // [0, 0, 0, 0, 0]
let nums = [1, 3, 2, 5, 4]
```
@@ -204,7 +204,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
=== "Swift"
```swift title="array.swift"
// 随机返回一个数组元素
/* 随机返回一个数组元素 */
func randomAccess(nums: [Int]) -> Int {
// 在区间 [0, nums.count) 中随机抽取一个数字
let randomIndex = nums.indices.randomElement()!
@@ -341,7 +341,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
=== "Swift"
```swift title="array.swift"
// 扩展数组长度
/* 扩展数组长度 */
func extend(nums: [Int], enlarge: Int) -> [Int] {
// 初始化一个扩展长度后的数组
var res = Array(repeating: 0, count: nums.count + enlarge)
@@ -526,7 +526,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
=== "Swift"
```swift title="array.swift"
// 在数组的索引 index 处插入元素 num
/* 在数组的索引 index 处插入元素 num */
func insert(nums: inout [Int], num: Int, index: Int) {
// 把索引 index 以及之后的所有元素向后移动一位
for i in sequence(first: nums.count - 1, next: { $0 > index + 1 ? $0 - 1 : nil }) {
@@ -536,7 +536,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
nums[index] = num
}
// 删除索引 index 处元素
/* 删除索引 index 处元素 */
func remove(nums: inout [Int], index: Int) {
let count = nums.count
// 把索引 index 之后的所有元素向前移动一位
@@ -674,7 +674,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
=== "Swift"
```swift title="array.swift"
// 遍历数组
/* 遍历数组 */
func traverse(nums: [Int]) {
var count = 0
// 通过索引遍历数组
@@ -793,7 +793,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
=== "Swift"
```swift title="array.swift"
// 在数组中查找指定元素
/* 在数组中查找指定元素 */
func find(nums: [Int], target: Int) -> Int {
for i in nums.indices {
if nums[i] == target {