把字符串"3,1,2,4"以","分割拆分为数组，数组元素并按从小到大的顺序排列

package com.wangcf;
/**
 * 把字符串"3,1,2,4"以","分割拆分为数组，数组元素并按从小到大的顺序排列
 * @author fan
 *
 */
public class Test{
    /**
     * 冒泡排序
     * @param s
     * @return
     */
    public int[] paixu(int[] s){
        for (int i=s.length; i >0; i--) {
            int tem;
            for (int j = 0; j < i-1; j++) {
                if(s[j]>s[j+1]){
                    tem=s[j];
                    s[j]=s[j+1];
                    s[j+1]=tem;
                }    
            }
        }
        return s;
    }
    
    
    public static void main(String[] args) {
        String s=new String("3,1,2,4");
        String a[]=s.split(",");    //以,隔开获得数组a[]={"3","1","2","4"}
        int b[]=new int[a.length];
        for(int i=0;i