Select random item using weight

krishnakumar kuna

12y1.4kVisual Basic .NET

hello,

I want to select random items from a list with weight

like this

item - weight

apple -34

orange-37

strawberry-11

mango-8

banana -3.98

cherry-5.7

grape- 0.3

guava- 0.02

please help me with this if i use random generate method this grape and guava which has less than 1 is got as 1 used frequently which i should not want.

thanks

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Nitesh Kejriwal12y ago
Store the items in a list and then print a value present at an index of the list, where the index is generated randomly.
0
Vulpes12y ago
Try this:

using System;

class Program
{
static Random r = new Random();

static void Main()
{
// get 10 random fruits
for(int i = 0; i < 10; i++)
Console.WriteLine(GetRandomFruit());
Console.ReadKey();
}

static string GetRandomFruit()
{
double d = r.NextDouble(); // 0 <= d < 1.0
if(d < 0.34)
return "apple";
else if (d < 0.71)
return "orange";
else if (d < 0.82)
return "strawberry";
else if (d < 0.9)
return "mango";
else if (d < 0.9398)
return "banana";
else if (d < 0.9968)
return "cherry";
else if (d < 0.9998)
return "grape";
else
return "guava";
}
}
0