使用Array.sort（）方法时数组的最大大小是多少？

Question

in my application I have an array with 5000 elements. I have to sort these elements.But I am getting error of "Array index Out Of Bound Exception". Can anybody tell me what can be the maximum size for the array to sort?

Should I use ArrayList ??

Answer 1

There is no specific limit - you are only constrained by memory here, and at this point the array already exists, so this isn't a limitation of Array.Sort . For example:

int[] arr = new int[500000];
Random rand = new Random();
for (int i = 0; i < arr.Length; i++) arr[i] = rand.Next();
Array.Sort(arr); // works just fine

I suspect you might (for example) have an IComparable[<T>] implementation that is throwing an error internally? Or alternatively, perhaps this error has nothing at all to do with Array.Sort , and you have simply considered the wrong line as the cause.

The exception's .StackTrace should reveal everything, of course.

And no: you shouldn't use ArrayList here. Or pretty much anywhere else.