打印列表项

问题描述

List<string> list = new List<string>();
        list.Add("A");
        list.Add("B");

List<string> list1 = new List<string>();
        list.Add("a");
        list.Add("b");


    for (int i = 0; i < list.Count; i++)
    {
        // print another list items.
        for (int j = 0; j < list1.Count; j++)
        {
            Console.WriteLine("/" + list[i] + "/" + list1[j]);
        }

    }

我想像这样编码 string tmpS = + list [i]; 加入下一个列表项目togeter。

I want to code like this string tmpS =+ list[i]; to Join the next list item togeter.

然后打印$ c> tmpS

then print tmpS

但编译错误CS0023：运算符'+'不能应用于类型为'string'的操作数。

but compile error CS0023: Operator '+' cannot be applied to operand of type 'string'.

如何打印下列所有项目（任何类型都可以）

How to print all the items below.(any sort is ok)

A
Aa
Ab
Aab
Aba
AB
ABa
ABb
ABab
ABba
B
Ba
Bb
Bab
Bba

（上限号码无交换小字符应该被转换，并且始终遵循大写字母附加小字符。）

(The Caps number No swap. the small characters should be swaped. and always follow Caps Numbers Append small characters.)

推荐答案

它使我很久没有在纯粹的算法问题！

it makes a long time I did not worked on a pure algorithmic problem!

这个程序应该诀窍：

class Program
{
    static void Main(string[] args)
    {
        List<string> uppers = new List<string>();
        uppers.Add("A");
        uppers.Add("B");

        List<string> lowers = new List<string>();
        lowers.Add("a");
        lowers.Add("b");

        List<string> combinedUppers = GetCombinedItems(uppers);
        List<string> combinedLowers = GetCombinedItems(lowers);
        List<string> combinedUppersLowers = GetCombinedList(combinedUppers, combinedLowers);

        foreach (string combo in combinedUppersLowers)
        {
            Console.WriteLine(combo);
        }

        Console.Read();
    }

    static private List<string> GetCombinedItems(List<string> list)
    {
        List<string> combinedItems = new List<string>();

        for (int i = 0; i < list.Count; i++)
        {
            combinedItems.Add(list[i]);

            for (int j = 0; j < list.Count; j++)
            {
                if (list[i] != list[j])
                {
                    combinedItems.Add(String.Format("{0}{1}", list[i], list[j]));
                }
            }
        }

        return combinedItems;
    }

    static private List<string> GetCombinedList(List<string> list1, List<string> list2)
    {
        List<string> combinedList = new List<string>();

        for (int i = 0; i < list1.Count; i++)
        {
            combinedList.Add(list1[i]);

            for (int j = 0; j < list2.Count; j++)
            {
                combinedList.Add(String.Format("{0}{1}", list1[i], list2[j]));
            }
        }

        for (int i = 0; i < list2.Count; i++)
        {
            combinedList.Add(list2[i]);

            for (int j = 0; j < list1.Count; j++)
            {
                combinedList.Add(String.Format("{0}{1}", list2[i], list1[j]));
            }
        }

        return combinedList;
    }
}

问候。

此程序为您提供以下输出：

This program gives you this output:

这篇关于打印列表项的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！