Merge <int, string> and <int, double> into <double,string> C# dictionary

Question

If my dictionary 1 is :

0 : string1
1 : string2
2 : string3

And my dictionary 2 is :

0 : 28.0
1 : 12.6
2 : -12.4

How do I get a combined dictionary with :

28.0  : string1
12.6  : string2
-12.4 : string3

This is how I have used them so far

SortedDictionary<int, double> map2 = new SortedDictionary<int, double>();
SortedDictionary<int, string> map1 = new SortedDictionary<int, string>();

Edit - For this question, assume the keys in both the dictionaries are sequential and in increasing order and always the same.

Answer 1

Assuming both dictionaries have the same count and have the same keys:

map1.ToDictionary(x => map2[x.Key], x => x.Value)

This would fail if the second dictionary has duplicated values.