Having an array of strings how can I update it so its elements are sorted by its length.
I was trying
string[] arr = {"aa","ss","a","abc"};
arr = arr.OrderBy(aux => aux.Length);
So, I would get a,aa,ss,abc, but it says
cannot implicitly convert type 'system.linq.iorderedenumerable to string[]'
So, I was doing
foreach (string s in arr.OrderBy(str => str.Length))
{
//
}
Is there other way to do this?
Since arr is an array, you can use the convenient Array.Sort method:
Array.Sort(arr, (x, y) => x.Length.CompareTo(y.Length));
foreach (string s in arr)
{
...
}
This is more efficient than OrderBy as it will sort the elements of the array in place rather than creating a new collection to enumerate.
OrderBy returns IEnumerable, not an array. Use ToArray method to get an array:
arr = arr.OrderBy(aux => aux.Length).ToArray();
However, it will not sort the source array. Instead of that, it will create a new one with items sorted and replace the reference. If you need in-place sort (e.g. when the array is also referenced elsewhere) use Array.Sort method:
Array.Sort(x, (x1, x2) => x1.Length.CompareTo(x2.Length));
You can also do this using Linq as below:
var sortedElements = from arrElement in arr.Distinct()
orderby arrElement.Length
select arrElement;
foreach (string element in sortedElements)
{
...
}
