mirror of
https://github.com/krahets/hello-algo.git
synced 2024-12-27 02:06:29 +08:00
119 lines
2.3 KiB
Go
119 lines
2.3 KiB
Go
// File: print_utils.go
|
||
// Created Time: 2022-12-03
|
||
// Author: Reanon (793584285@qq.com), Krahets (krahets@163.com), msk397 (machangxinq@gmail.com)
|
||
|
||
package pkg
|
||
|
||
import (
|
||
"container/list"
|
||
"fmt"
|
||
"strconv"
|
||
"strings"
|
||
)
|
||
|
||
// PrintSlice Print a slice
|
||
func PrintSlice[T any](nums []T) {
|
||
fmt.Printf("%v", nums)
|
||
fmt.Println()
|
||
}
|
||
|
||
// PrintList Print a list
|
||
func PrintList(list *list.List) {
|
||
if list.Len() == 0 {
|
||
fmt.Print("[]\n")
|
||
return
|
||
}
|
||
e := list.Front()
|
||
// 强转为 string, 会影响效率
|
||
fmt.Print("[")
|
||
for e.Next() != nil {
|
||
fmt.Print(e.Value, " ")
|
||
e = e.Next()
|
||
}
|
||
fmt.Print(e.Value, "]\n")
|
||
}
|
||
|
||
// PrintMap Print a hash map
|
||
func PrintMap[K comparable, V any](m map[K]V) {
|
||
for key, value := range m {
|
||
fmt.Println(key, "->", value)
|
||
}
|
||
}
|
||
|
||
// PrintHeap Print a heap
|
||
func PrintHeap(h []any) {
|
||
fmt.Printf("堆的数组表示：")
|
||
fmt.Printf("%v", h)
|
||
fmt.Printf("\n堆的树状表示：\n")
|
||
root := SliceToTree(h)
|
||
PrintTree(root)
|
||
}
|
||
|
||
// PrintLinkedList Print a linked list
|
||
func PrintLinkedList(node *ListNode) {
|
||
if node == nil {
|
||
return
|
||
}
|
||
var builder strings.Builder
|
||
for node.Next != nil {
|
||
builder.WriteString(strconv.Itoa(node.Val) + " -> ")
|
||
node = node.Next
|
||
}
|
||
builder.WriteString(strconv.Itoa(node.Val))
|
||
fmt.Println(builder.String())
|
||
}
|
||
|
||
// PrintTree Print a binary tree
|
||
func PrintTree(root *TreeNode) {
|
||
printTreeHelper(root, nil, false)
|
||
}
|
||
|
||
// printTreeHelper Help to print a binary tree, hide more details
|
||
// This tree printer is borrowed from TECHIE DELIGHT
|
||
// https://www.techiedelight.com/c-program-print-binary-tree/
|
||
func printTreeHelper(root *TreeNode, prev *trunk, isLeft bool) {
|
||
if root == nil {
|
||
return
|
||
}
|
||
prevStr := " "
|
||
trunk := newTrunk(prev, prevStr)
|
||
printTreeHelper(root.Right, trunk, true)
|
||
if prev == nil {
|
||
trunk.str = "———"
|
||
} else if isLeft {
|
||
trunk.str = "/———"
|
||
prevStr = " |"
|
||
} else {
|
||
trunk.str = "\\———"
|
||
prev.str = prevStr
|
||
}
|
||
showTrunk(trunk)
|
||
fmt.Println(root.Val)
|
||
if prev != nil {
|
||
prev.str = prevStr
|
||
}
|
||
trunk.str = " |"
|
||
printTreeHelper(root.Left, trunk, false)
|
||
}
|
||
|
||
// trunk Help to print tree structure
|
||
type trunk struct {
|
||
prev *trunk
|
||
str string
|
||
}
|
||
|
||
func newTrunk(prev *trunk, str string) *trunk {
|
||
return &trunk{
|
||
prev: prev,
|
||
str: str,
|
||
}
|
||
}
|
||
|
||
func showTrunk(t *trunk) {
|
||
if t == nil {
|
||
return
|
||
}
|
||
|
||
showTrunk(t.prev)
|
||
fmt.Print(t.str)
|
||
}
|