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docs/chapter_searching/binary_search_insertion.md
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@ -140,7 +140,9 @@ comments: true
```swift title="binary_search_insertion.swift"
/* 二分查找插入点（无重复元素） */
func binarySearchInsertionSimple(nums: [Int], target: Int) -> Int {
var i = 0, j = nums.count - 1 // 初始化双闭区间 [0, n-1]
// 初始化双闭区间 [0, n-1]
var i = nums.startIndex
var j = nums.endIndex - 1
while i <= j {
let m = i + (j - i) / 2 // 计算中点索引 m
if nums[m] < target {
@ -445,7 +447,9 @@ comments: true
```swift title="binary_search_insertion.swift"
/* 二分查找插入点（存在重复元素） */
func binarySearchInsertion(nums: [Int], target: Int) -> Int {
var i = 0, j = nums.count - 1 // 初始化双闭区间 [0, n-1]
// 初始化双闭区间 [0, n-1]
var i = nums.startIndex
var j = nums.endIndex - 1
while i <= j {
let m = i + (j - i) / 2 // 计算中点索引 m
if nums[m] < target {