Method toString

Java/graphs/MyGraph.java:32–39

()

   		return -1;
   	}
   	public String toString(){
   		if(size==0) return "{}";
   		String buf="{"+vertex(0);
   		for (int i=1;i<size;i++) {
   			buf+=","+vertex(i);
   		}return buf+"}";
   		
   	}

   	private String vertex(int i){
   		String buf=vertices[i]+":";