fix: correct Swift fixed-size array insertion bounds (#1968)

Co-authored-by: Cuong Nguyen <[email protected]>
Co-authored-by: krahets <[email protected]>

codes/swift/chapter_array_and_linkedlist/array.swift

@@ -28,7 +28,7 @@ func extend(nums: [Int], enlarge: Int) -> [Int] {
 /* 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 nums.indices.dropFirst(index).reversed() {
+    for i in stride(from: nums.count - 1, to: index, by: -1) {
         nums[i] = nums[i - 1]
     }
     // 将 num 赋给 index 处的元素

en/codes/swift/chapter_array_and_linkedlist/array.swift

@@ -28,7 +28,7 @@ func extend(nums: [Int], enlarge: Int) -> [Int] {
 /* Insert element num at index index in the array */
 func insert(nums: inout [Int], num: Int, index: Int) {
     // Move all elements at and after index index backward by one position
-    for i in nums.indices.dropFirst(index).reversed() {
+    for i in stride(from: nums.count - 1, to: index, by: -1) {
         nums[i] = nums[i - 1]
     }
     // Assign num to the element at index index

ja/codes/swift/chapter_array_and_linkedlist/array.swift

@@ -28,7 +28,7 @@ func extend(nums: [Int], enlarge: Int) -> [Int] {
 /* 配列の index 番目に要素 num を挿入 */
 func insert(nums: inout [Int], num: Int, index: Int) {
     // インデックス index 以降の全要素を 1 つ後ろへ移動する
-    for i in nums.indices.dropFirst(index).reversed() {
+    for i in stride(from: nums.count - 1, to: index, by: -1) {
         nums[i] = nums[i - 1]
     }
     // index の要素に num を代入する

ru/codes/swift/chapter_array_and_linkedlist/array.swift

@@ -28,7 +28,7 @@ func extend(nums: [Int], enlarge: Int) -> [Int] {
 /* Вставить элемент num по индексу index в массив */
 func insert(nums: inout [Int], num: Int, index: Int) {
     // Сдвинуть элемент с индексом index и все последующие элементы на одну позицию назад
-    for i in nums.indices.dropFirst(index).reversed() {
+    for i in stride(from: nums.count - 1, to: index, by: -1) {
         nums[i] = nums[i - 1]
     }
     // Присвоить num элементу по индексу index

zh-hant/codes/swift/chapter_array_and_linkedlist/array.swift

@@ -28,7 +28,7 @@ func extend(nums: [Int], enlarge: Int) -> [Int] {
 /* 在陣列的索引 index 處插入元素 num */
 func insert(nums: inout [Int], num: Int, index: Int) {
     // 把索引 index 以及之後的所有元素向後移動一位
-    for i in nums.indices.dropFirst(index).reversed() {
+    for i in stride(from: nums.count - 1, to: index, by: -1) {
         nums[i] = nums[i - 1]
     }
     // 將 num 賦給 index 處的元素