testcount.java

本例演示了怎样统计一串数字中各个数字的个数

import javax.swing.JOptionPane;
import java.lang.String.*;
public class testCount
{
	public static int[] count(String s)
	{
		char []cc=s.toCharArray();
		int []bb=new int[10];
		for(int i=0;i<cc.length;i++)
		{
			if(Character.isDigit(cc[i]))
				bb[cc[i]-'0']++;
		}
		return bb;
	}
	public static void main(String[]args)
	{
		String string=JOptionPane.showInputDialog(null,"Enter a digital string","TestCount",JOptionPane.QUESTION_MESSAGE);
		int []aa=count(string);
		String output="";
		for(int i=0;i<10;i++)
		{
			output=output+"count["+i+"]="+aa[i]+"\n";
		}
		JOptionPane.showMessageDialog(null,output,"testOutput",JOptionPane.INFORMATION_MESSAGE);
	}



}