前言：
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go复制代码
package main
import (
"fmt"
)
// Graph represents a directed graph
type Graph struct {
vertices map[string]*Vertex
}
// Vertex represents a node in the graph
type Vertex struct {
key string
edges map[string]*Edge
attributes map[string]interface{}
}
// Edge represents an edge connecting two vertices
type Edge struct {
from, to string
attributes map[string]interface{}
}
// AddVertex adds a vertex to the graph
func (g *Graph) AddVertex(key string) {
if g.vertices == nil {
g.vertices = make(map[string]*Vertex)
}
vertex := &Vertex{key: key, edges: make(map[string]*Edge), attributes: make(map[string]interface{})}
g.vertices[key] = vertex
}
// AddEdge adds an edge to the graph
func (g *Graph) AddEdge(from, to string) {
fromVertex := g.vertices[from]
toVertex := g.vertices[to]
if fromVertex == nil || toVertex == nil {
fmt.Printf("Invalid vertices (%s, %s) for edge\n", from, to)
return
}
edge := &Edge{from: from, to: to, attributes: make(map[string]interface{})}
fromVertex.edges[to] = edge
}
// SetAttribute sets an attribute for a vertex or edge
func (g *Graph) SetAttribute(key string, value interface{}) {
if g.vertices == nil {
fmt.Println("No vertices in the graph")
return
}
vertex := g.vertices[key]
if vertex != nil {
vertex.attributes[value] = value
} else {
fmt.Printf("Invalid vertex (%s) for attribute\n", key)
}
}
// GetAttribute gets an attribute for a vertex or edge
func (g *Graph) GetAttribute(key string, attribute string) interface{} {
if g.vertices == nil {
fmt.Println("No vertices in the graph")
return nil
}
vertex := g.vertices[key]
if vertex != nil {
return vertex.attributes[attribute]
} else {
fmt.Printf("Invalid vertex (%s) for attribute\n", key)
return nil
}
}
func main() {
graph := &Graph{}
graph.AddVertex("A") // Add vertices A, B, C, D, E one by one. Each vertex has an empty set of edges initially. 335 490 20000 487629432666565654 10000000000000001739257259775114 26473285484946187774388876921314927014198933873175881119438487927859426493527581242986717111111206 165 176 353 365 589 601 836 858 1185 1215 1756 1794 2437 2485 3402 3464 4692 4766 6397 6539 8508 8695 11272 11539 15440 15857 20000 etcetera . Nowhere will the middle be more different than it was before you pressed . ) 4. Invert your sequence (see last step) . com com . . com org org . org org . org org . org org . org org . org org . org org . org org . org org . org org . org org . org org . org org . org org . org org . org org . org org . org org . org com . com com com com com com com com com com com com com com com com com com com com com com com com com com com com com com com com com
标签： #c语言invert
