jwe算法

A. 求两道C#的课后题目答案～

第一题：
using System;
using System.Collections.Generic;
using System.Text;

namespace Bai
{
class Program
{
static void Main(string[] args)
{
string[] article = { "the", "a", "one", "some", "any" };
string[] noun = { "boy", "girl", "dog", "town", "car" };
string[] verb = { "drove", "jumped", "ran", "walked", "skipped" };
string[] preposition = { "to", "from", "over", "under", "on" };

Random rnd = new Random();
string sen = string.Empty;
for (int i = 0; i < 10; i++)
{
sen += article[rnd.Next(0, 5)] + " ";
sen += noun[rnd.Next(0, 5)] + " ";
sen += verb[rnd.Next(0, 5)] + " ";
sen += preposition[rnd.Next(0, 5)] + " ";
sen += article[rnd.Next(0, 5)] + " ";
sen += noun[rnd.Next(0, 5)] + ".";

Console.Write(char.ToUpper(sen[0]));
Console.WriteLine(sen.Substring(1));

sen = string.Empty;
}

Console.ReadKey(true);
}
}
}

第二题

private void button4_Click(object sender, EventArgs e)
{
string ss = "abcdeftghwefjweiobbbb"; //你需要的话就自己输入
string sa = ss.Substring(0, 1);
ss = ss.Substring(0, ss.Length -1);
ss += sa+"ay";
MessageBox.Show(ss);
}

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