How can I sort generic list DESC and ASC

Question

How can I sort generic list DESC and ASC  With LINQ and without LINQ  I m using VS2008   class Program       static void Main string   args                List lt int gt  li   new List lt int gt              li Add 456           li Add 123           li Add 12345667           li Add 0           li Add 1            li Sort             foreach  int item in li                        Console WriteLine item ToString       n                       Console ReadKey

User · Answer

I was checking all the answer above and wanted to add one more additional information. I wanted to sort the list in DESC order and I was searching for the solution which is faster for bigger inputs and I was using this method earlier :-

li.Sort();
li.Reverse();

but my test cases were failing for exceeding time limits, so below solution worked for me:-

li.Sort((a, b) => b.CompareTo(a));

So Ultimately the conclusion is that 2nd way of Sorting list in Descending order is bit faster than the previous one.

User · Answer

Very simple way to sort List with int values in Descending order   li Sort  a b   gt  b-a     Hope that this helps

User · Answer

With Linq  var ascendingOrder   li OrderBy i   gt  i   var descendingOrder   li OrderByDescending i   gt  i     Without Linq  li Sort  a  b    gt  a CompareTo b       ascending sort li Sort  a  b    gt  b CompareTo a       descending sort   Note that without Linq  the list itself is being sorted  With Linq  you re getting an ordered enumerable of the list but the list itself hasn t changed  If you want to mutate the list  you would change the Linq methods to something like   li   li OrderBy i   gt  i  ToList

User · Answer

without linq  use Sort   and then Reverse   it

User · Answer

Without Linq   Ascending   li Sort      Descending   li Sort    li Reverse

[c#] How can I sort generic list DESC and ASC?

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