java 实现全排列

      public static void main(String[] args){
          int [] data={1,2,3,4,5};
          boolean[] b=new boolean[data.length];
          quanpailie(data, b, 0,"");
      }
      //递归实现
      public static void quanpailie(int [] data,boolean[] b,int level,String str)
      {
          if(level==data.length)
          {
              System.out.println(str);
              return;
          }
          for(int i=0;i<data.length;i++)
          {
              if(!b[i])
              {
                  b[i]=true;
                  quanpailie(data, b, level+1, str+data[i]);
                  b[i]=false;
              }
          }
      }