close
Random Rnd = new Random(); //加入Random,產生的數字不會重覆
for (int i = 0; i < 10; i++)
{
Console.WriteLine("number:" + Rnd.Next(10, 21).ToString());
}
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Random Rnd = new Random(); //加入Random,產生的數字不會重覆
for (int i = 0; i < 10; i++)
{
Console.WriteLine("number:" + Rnd.Next(10, 21).ToString());
}