数组
一维数组
数组初始化，创建数组，数组长度为5
int [] array=new int[5];
array[0] = 1;
array[1] = 2;
array[2] = 3;
array[3] = 4;
array[4] = 5;
直接赋值的数组
int[] array1 = new int[] {1,2,3,4,5 };
数组，在创建的时候，需要规定数据类型，初始长度
二维数组
int [,] shuzu = new int[3,4];
3 表示有3个一维数组
4 表示每一个一维数组有4个元素
给第一个一维数组的2号索引赋值
shuzu[0, 2] = 3;
直接赋值
int[,] shuzu1 = new int[,] {
{1,2,3,4},
{2,3,4,5},
{3,4,5,6}
};
冒泡排序
for (int i = 0; i < 10;i++ )
{
for (int j =i; j < 9;j++ )
{
if(shuzi[i]<shuzi[j+1])
{
int zhong = shuzi[i];
shuzi[i] = shuzi[j + 1];
shuzi[j + 1] = zhong;
}
}
练习：
输入人数，输入每个人年龄，求总和
// Console.Write("请输入班级人数：");
// int n = int.Parse(Console.ReadLine());
// int [] ban=new int[n];
//int sum=0;
// for (int i = 0; i < n; i++)
// {
// Console.Write("请输入年龄：");
// ban [i]=int.Parse(Console.ReadLine());
// sum += ban[i];
// }
// Console.WriteLine("年龄的总和是"+sum);
// Console.ReadLine();
输入班级人数，存放语数英成绩，求每人总和，语文总分，数学平均分
//Console.Write("请输入班级人数：");
//int n = int.Parse(Console.ReadLine());
//double[,] chengji = new double[n, 3];
//double a = 0;
//double yz = 0;
//double sp = 0;
//for (int i = 0; i < n; i++)
//{
// Console.Write("请输入语文成绩：");
// chengji[i, 0] = double.Parse(Console.ReadLine());
// Console.Write("请输入数学成绩：");
// chengji[i, 1] = double.Parse(Console.ReadLine());
// Console.Write("请输入英语成绩：");
// chengji[i, 2] = double.Parse(Console.ReadLine());
//}
//for (int j = 0; j < n; j++)
//{
// a = chengji[j, 0] + chengji[j, 1] + chengji[j, 2];
// Console.WriteLine("第{0}个人的三门成绩总和是{1}", (j + 1), a);
//}
//for (int k = 0; k < n; k++)
//{
// yz += chengji[k, 0];
//}
//Console.WriteLine("语文成绩的总和是：" + yz);
//for (int p = 0; p < n; p++)
//{
// sp += chengji[p, 1];
//}
//Console.WriteLine("数学平均分成绩的是：" + (sp / n));
//Console.ReadLine();
打印柴，利用二维数组
//string[,] mingzi = new string[16, 10]
//{
//{" "," "," ","●"," "," ","","●","",""},
//{" "," "," ","●"," "," ","●"," "," ",""},
//{" ","●"," ","●"," "," ","●"," "," ","●"},
//{" ","●"," ","●"," "," ","●"," ","●",""},
//{" ","●"," ","●","●","●","●","●","",""},
//{" ","●"," ","●"," "," ","●","","",""},
//{" ","●"," ","●"," "," ","●","","","●"},
//{"●","●","●","●","●"," ","●","●","●",""},
//{" "," "," "," ","●","","","","",""},
//{" "," "," "," ","●","","","","",""},
//{" ","●","●","●","●","●","●","●","●",""},
//{" "," "," ","●","●","●","","","",""},
//{" "," ","●"," ","●"," ","●","","",""},
//{" ","●"," "," ","●"," "," ","●","",""},
//{"●"," "," "," ","●"," "," "," ","●",""},
//{" "," "," "," ","●"," "," "," "," ",""},
//};
//for(int i=0;i<16;i++)
//{
//for(int b=0;b<10;b++)
//{
//Console.Write(mingzi[i,b]);
//}
//Console.WriteLine();
//}
//Console.ReadLine();
随机一百以内10个数，按照大小顺序排列
int[] shuz = new int[10];
Random shu = new Random();
for (int i = 0; i < 10; i++)
{
int a = shu.Next(101);
shuz[i] = a;
Console.WriteLine(shuz[i]);
}
for (int j = 0; j < 10; j++)
{
for (int k = j; k < 9; k++)
{
if (shuz[j] > shuz[k + 1])
{
int zhong = shuz[j];
shuz[j] = shuz[k + 1];
shuz[k + 1] = zhong;
}
}
}
for (int i = 0; i < 10; i++)
{
Console.WriteLine(shuz[i]);
}
Console.ReadLine();
随机一百以内十个不重复的数，按照大小顺序排列。
// int[] shuz = new int[10];
//Random shu=new Random();
// for (int i = 0; i < 10; i++)
// {
// bool b=true;
// int a = shu.Next(101);
// shuz[i] = a;
// for (int j = 0; j < i; j++)
// {
// if (a == shuz[j])
// {
// b = false;
// i--;
// }
// if (b)
// {
// shuz[i] = a;
// }
// }
// Console.WriteLine(shuz[i]);
// }
// for (int j = 0; j < 10; j++)
// {
// for (int k = j; k < 9; k++)
// {
// if (shuz[j] > shuz[k + 1])
// {
// int zhong = shuz[j];
// shuz[j] = shuz[k + 1];
// shuz[k + 1] = zhong;
// }
// }
// }
// for (int i = 0; i < 10; i++)
// {
// Console.WriteLine(shuz[i]);
// }
// Console.ReadLine();
//Random ran = new Random();
//输入每个人的手机号，，进行滚动显示，，清屏，随即一个索引，根据索引打印，等待0.1秒
// Console.Write("请输入人数：");
// int a =int.Parse( Console.ReadLine());
// string[]zhj=new string[a];
// for (int i = 0; i < a;i++ )
// {
// Console.Write("请输入第{0}个人的手机号：",(i+1));
// zhj[i] = Console.ReadLine();
// }
// Console.WriteLine("所有号码输入完毕，请按回车继续抽奖活动！");
//Console.ReadLine();
// Random ran=new Random();
// for (int j = 0; j < 30;j++ )
// {
// Console.Clear();
// int aa = ran.Next(a);
// Console.WriteLine("中奖号码是："+zhj[aa]);
// System.Threading.Thread.Sleep(100);
// }
// Console.ReadLine();