mirror of
https://github.com/krahets/hello-algo.git
synced 2024-12-25 23:36:30 +08:00
e4ba690005
* feat(go): support hash map chaining * feat(go): support hash map open address * feat(go): support simple hash * feat(go): support top k heap * feat(go): support subset sum I * feat(go): support subset sum native * feat(go): support subset sum II * fix(go): fix some problem
101 lines
2.1 KiB
Go
101 lines
2.1 KiB
Go
// File: heap_test.go
|
|
// Created Time: 2023-01-12
|
|
// Author: Reanon (793584285@qq.com)
|
|
|
|
package chapter_heap
|
|
|
|
import (
|
|
"container/heap"
|
|
"fmt"
|
|
"strconv"
|
|
"testing"
|
|
|
|
. "github.com/krahets/hello-algo/pkg"
|
|
)
|
|
|
|
func testPush(h *intHeap, val int) {
|
|
// 调用 heap.Interface 的函数，来添加元素
|
|
heap.Push(h, val)
|
|
fmt.Printf("\n元素 %d 入堆后 \n", val)
|
|
PrintHeap(*h)
|
|
}
|
|
|
|
func testPop(h *intHeap) {
|
|
// 调用 heap.Interface 的函数，来移除元素
|
|
val := heap.Pop(h)
|
|
fmt.Printf("\n堆顶元素 %d 出堆后 \n", val)
|
|
PrintHeap(*h)
|
|
}
|
|
|
|
func TestHeap(t *testing.T) {
|
|
/* 初始化堆 */
|
|
// 初始化大顶堆
|
|
maxHeap := &intHeap{}
|
|
heap.Init(maxHeap)
|
|
/* 元素入堆 */
|
|
testPush(maxHeap, 1)
|
|
testPush(maxHeap, 3)
|
|
testPush(maxHeap, 2)
|
|
testPush(maxHeap, 5)
|
|
testPush(maxHeap, 4)
|
|
|
|
/* 获取堆顶元素 */
|
|
top := maxHeap.Top()
|
|
fmt.Printf("堆顶元素为 %d\n", top)
|
|
|
|
/* 堆顶元素出堆 */
|
|
testPop(maxHeap)
|
|
testPop(maxHeap)
|
|
testPop(maxHeap)
|
|
testPop(maxHeap)
|
|
testPop(maxHeap)
|
|
|
|
/* 获取堆大小 */
|
|
size := len(*maxHeap)
|
|
fmt.Printf("堆元素数量为 %d\n", size)
|
|
|
|
/* 判断堆是否为空 */
|
|
isEmpty := len(*maxHeap) == 0
|
|
fmt.Printf("堆是否为空 %t\n", isEmpty)
|
|
}
|
|
|
|
func TestMyHeap(t *testing.T) {
|
|
/* 初始化堆 */
|
|
// 初始化大顶堆
|
|
maxHeap := newMaxHeap([]any{9, 8, 6, 6, 7, 5, 2, 1, 4, 3, 6, 2})
|
|
fmt.Printf("输入数组并建堆后\n")
|
|
maxHeap.print()
|
|
|
|
/* 获取堆顶元素 */
|
|
peek := maxHeap.peek()
|
|
fmt.Printf("\n堆顶元素为 %d\n", peek)
|
|
|
|
/* 元素入堆 */
|
|
val := 7
|
|
maxHeap.push(val)
|
|
fmt.Printf("\n元素 %d 入堆后\n", val)
|
|
maxHeap.print()
|
|
|
|
/* 堆顶元素出堆 */
|
|
peek = maxHeap.pop()
|
|
fmt.Printf("\n堆顶元素 %d 出堆后\n", peek)
|
|
maxHeap.print()
|
|
|
|
/* 获取堆大小 */
|
|
size := maxHeap.size()
|
|
fmt.Printf("\n堆元素数量为 %d\n", size)
|
|
|
|
/* 判断堆是否为空 */
|
|
isEmpty := maxHeap.isEmpty()
|
|
fmt.Printf("\n堆是否为空 %t\n", isEmpty)
|
|
}
|
|
|
|
func TestTopKHeap(t *testing.T) {
|
|
/* 初始化堆 */
|
|
// 初始化大顶堆
|
|
nums := []int{1, 7, 6, 3, 2}
|
|
k := 3
|
|
res := topKHeap(nums, k)
|
|
fmt.Printf("最大的 " + strconv.Itoa(k) + " 个元素为")
|
|
PrintHeap(*res)
|
|
}
|