数组、栈等转字符串

using System;
using System.Collections.Generic;


namespace Code
{
    class Program
    {

        static void Main(string[] args)
        {
            int[] nums = new int[] { 1, 2, 3, 4, 5, 6 };
            string a = string.Concat(nums);//数组转成字符串
            string a2 = string.Join(" ", nums);//数组每个元素间多了空格
            string a3 = string.Join("###", nums);//数组每个元素间插入了###

            Stack stack = new Stack();
            stack.Push('a');
            stack.Push('b');
            stack.Push('c');
            string s = string.Concat(stack);//栈中字符连接成字符串
            string s2 = string.Join(" ", stack);//栈中字符间多了空格

            Console.WriteLine(a);
            Console.WriteLine(a2);
            Console.WriteLine(a3);
            Console.WriteLine(s);
            Console.WriteLine(s2);

            string str = string.Concat(s.Reverse());//字符串翻转
            Console.WriteLine(str);

            Console.ReadKey();
        }          
    }
}