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鄰接矩陣及鄰接表

#include <iostream>
#include "stdio.h"
#include "stdlib.h"
#include "cstdlib"//syste()函式需要該標頭檔案;

using namespace std;

#define OK 1
#define ERROR 0
#define OVERFLOW -2
typedef int Status;

//#define MaxInt 32767 //網中表示極大值,即∞,若為無向圖,Mxint 0;

#define INFINITY 0//圖中表示初始值0;網中表示極大值,即∞,這個單單詞比Maxint含義好
#define MVNum 100 //最大頂點數

//00定義 點 邊 圖網

typedef char VerTexType; //假設頂點的資料型別為字元型
typedef int ArcType; //假設邊的權值型別為整型,若為無向圖,ArcType->EdgeType
typedef struct{
    VerTexType vexs[MVNum]; //頂點表
    ArcType arcs[MVNum][MVNum]; //鄰接矩陣
    int vexnum,arcnum; //圖的當前點數和邊數
  }AMGraph;

//01 定位Locate the vertex you need


int LocateVex(AMGraph G,char ch)
  {
  int i=0;
  for(i=0; i<G.vexnum;i++)
  {
    if(G.vexs[i]==ch)
    break;
  }

  if(i>=G.vexnum) //如果超過頂點數量了,返回-1
    return -1;

  return i; //return the index of the vertex you are looking
}
//02 列印 頂點(一維陣列) 邊(二維陣列)
Status PrintAMGraphVex

(AMGraph G)//列印頂點,一維陣列
{
  int i;
  printf("你輸入的頂點是:");
  for(i=0;i<G.vexnum;i++)
  {

    printf("%c\t",G.vexs[i]);
  }
  printf("\n");
  return OK;
}
Status PrintAMGraphArc(AMGraph G)//列印鄰接矩陣,二維陣列
{
  int i,j;
  cout<<"當前鄰接矩陣是:"<<endl;
  for(i=0;i<G.vexnum;i++)
  {
    for(j=0;j<G.vexnum;j++)
    {
      printf("%d\t",G.arcs[i][j]);
    }
    printf("\n\n\n");
  }
  return OK;
}

//03 建立一個無方向網圖的鄰接矩陣表示
Status CreateGraph(AMGraph &G)
{
  int i,j,k,w;
  char v1,v2;

  printf("Input the number of vertex and arc:\n");
  cin>>G.vexnum>>G.arcnum;
  printf("The number is %d and %d.\n",G.vexnum,G.arcnum);//驗證輸入內容
  //initialize vertex arcs;
  printf("Input %d vertex: ",G.vexnum);
  for(i=0;i<G.vexnum;++i)
    cin>>G.vexs[i];
  PrintAMGraphVex(G);//驗證輸入的頂點
  for(i=0;i<G.vexnum;++i)
    for(j=0;j<G.vexnum;++j)
      G.arcs[i][j]=INFINITY;//0
  PrintAMGraphArc(G);//驗證輸入的邊

  for (k = 0; k < G.arcnum; ++k)
  {
    printf("input the i and j of (Vi,Vj), and the weight:\n"); //一條邊的兩個結點,和這條邊的權重,無向圖權值輸入1;也可以前面宣告為1.
    cin>>v1>>v2>>w;
    //cout<<"你輸入的v1 v2 w :"<<v1<<v2<<w<<endl;
    i=LocateVex(G,v1);
    j=LocateVex(G,v2);
    //cout<<"i:"<<i<<" ";
    //cout<<"j:"<<j<<endl;
    if(i==-1 || j==-1)
    {
      return ERROR;
    }
    G.arcs[i][j]=w;
    G.arcs[j][i]=G.arcs[i][j];//如果是有向網,可以w1 w2
    //cout<<"G.arcs[i][j] :"<<G.arcs[i][j]<<endl;
  }  
  return OK;
}

Status main()
{
  AMGraph G;
  CreateGraph(G);
  PrintAMGraphArc(G);
  system("pause");
  return OK;
}