Generate random numbers that are not repeated

Although I have seen other people encounter this problem before, I can leave it empty.

However, I recently thought about how to find a solution, so I didn't check the information.

Let's talk about my personal ideas. I think it's really a tough start. For example, I want to generate two random numbers that do not repeat between 1 and 5.

If 3 is generated for the first time, then the number X generated for the second time determines if this X has already appeared. If so, try again.

Random rnd = <> lstResult =  List<>(lstResult.Count < ){             temp = rnd.Next(,(lstResult.Contains(temp))            

( i = ;i < ;i++)

Then a random number is generated.

 rndNum = rnd.Next(i ,);

Use rndNum as the index of the arrIndex array.

Exchange two numbers, arrIndex [I] And arrIndex [rndNum ].

Random Number rndNum = rnd. next (,) <= [] <and I (secondary random number rndNum = rnd. next (,) <= [] <and I (secondary random number rndNum = rnd. next (,) <= [] <and I (secondary random number rndNum = rnd. next (,) <= [] <and I (secondary random number rndNum = rnd. next (,) <= [] <and I (

In the above step, two 7 numbers are generated from the random number, but if we use this 7 as an index to disrupt an ordered set, then we can retrieve the x on the left as the random number we want.

Code:

[] arrNums =  [ ( i = ; i < ; i++= i + =  ( i = ; i < ; i++ index = rnd.Next(i,  temp ===

There are many ways to generate non-repeated random numbers on the Internet. For more information, I just came up with what I did at the time. reference ,,,