编写程序，随机生成10个三位正整数，将它们按由小到大的升序排序，并按每行4个数输出。

VB?public class Generation
{
public static string str;

private static char[] constant =
{
'0','1','2','3','4','5','6','7','8','9',
// 'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'
//'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'
};

public static string GenerateRandom