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Copy pathColouring Of Vertices.java
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Colouring Of Vertices.java
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import java.util.Scanner;
import java.util.LinkedList;
import java.util.Arrays;
class Coloring_Vertices
{
int v;
LinkedList<Integer> adj[];
Coloring_Vertices(int v)
{
this.v=v;
adj=new LinkedList[v];
for(int i=0;i<v;i++)
{
adj[i]=new LinkedList<>();
}
}
void addEdge(int src,int dest)
{
adj[src].add(dest);
adj[dest].add(src);
}
void coloring()
{
int res[]=new int[v];
Arrays.fill(res,-1);
boolean color[]=new boolean[v];
Arrays.fill(color,true);
res[0]=0;
for(int i=1;i<v;i++)
{
for(Integer j:adj[i])
{
if(res[j]!=-1)
color[res[j]]=false;
}
int cr;
for(cr=0;cr<v;cr++)
if(color[cr])
break;
res[i]=cr;
Arrays.fill(color,true);
}
for(int i=0;i<v;i++)
System.out.println(i+"-->"+res[i]);
}
public static void main(String[] args) {
Scanner sc=new Scanner(System.in);
int v=sc.nextInt();
int e=sc.nextInt();
Coloring_Vertices g=new Coloring_Vertices(v);
for(int i=1;i<=e;i++)
{
int src=sc.nextInt();
int dest=sc.nextInt();
g.addEdge(src,dest);
}
g.coloring();
}
}