Add count value to dictionary value

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I have a dictionary

Dim Dic as dictionary(integer, integer) 
123, 3
345, 21
22, 0
56, 1

I sorted Dic by values

Dim DicSort As List(Of KeyValuePair(Of integer, Integer)) = Dic.ToList 

DicSort.Sort(Function(x, y) y.Value.CompareTo(x.Value))
22, 0
25, 1
123, 3
345, 21

I want remove Dic values and put index number (or current count of Dic at runtime)
Like as this,
22, 0
25, 1
123, 2
345, 3

What I have tried:

Dim OrderDic = Dic.ToDictionary(Function(x) x.Key, Function(y)  Dic.Values.Count)

But i have this result,
22, 4
25, 4
123, 4
345, 4

Posted 24-Jun-18 23:05pm

gacar

Updated 25-Jun-18 2:10am

v2

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Comments

Richard MacCutchan 25-Jun-18 6:37am

Dic.Values.Count is a constant number, and will always be 4 in this case. You need some item that gives the position in the dictionary.

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Maciej Los · Accepted Answer · 2018-06-25T02:12:00

Solution 1

Check this:

VB.NET

Dim oDict As Dictionary(Of Integer, Integer) = New Dictionary(Of Integer, Integer)
oDict.Add(123, 3)
oDict.Add(345, 21)
oDict.Add(22, 0)
oDict.Add(56, 1)


'sort by key and
'replace values with index of sorted element
oDict = oDict _
	.OrderBy(Function(x) x.Key)	_
	.Select(Function(x, i) New KeyValuePair(Of Integer, Integer)(x.Key, i)) _
	.ToDictionary(Function(kvp) kvp.Key, Function(kvp) kvp.Value)

Good luck!

Posted 25-Jun-18 2:12am

Maciej Los

Updated 26-Jun-18 7:38am

v2

Comments

gacar 25-Jun-18 9:13am

Thank you very much Maciej Los, worked.

Maciej Los 25-Jun-18 9:23am

Great! You're very welcome.

Richard Deeming 26-Jun-18 12:01pm

You don't need that .ToList() call in there. :)

Maciej Los 26-Jun-18 13:37pm

Good point!
Updated!