This commit is contained in:
krahets
2023-07-06 04:09:06 +08:00
parent ec4f250847
commit c27363ba50
2 changed files with 33 additions and 20 deletions
+14 -1
View File
@@ -169,7 +169,20 @@ comments: true
=== "Swift"
```swift title="top_k.swift"
[class]{}-[func]{topKHeap}
/* 基于堆查找数组中最大的 k 个元素 */
func topKHeap(nums: [Int], k: Int) -> [Int] {
// 将数组的前 k 个元素入堆
var heap = Array(nums.prefix(k))
// 从第 k+1 个元素开始,保持堆的长度为 k
for i in stride(from: k, to: nums.count, by: 1) {
// 若当前元素大于堆顶元素,则将堆顶元素出堆、当前元素入堆
if nums[i] > heap.first! {
heap.removeFirst()
heap.insert(nums[i], at: 0)
}
}
return heap
}
```
=== "Zig"