How to unifiy two arrays in a dictionary?

Question

If you have two arrays string[] a and int[] b how can you get a Dictionary from it most efficiently and with least c

Answer 1

If this is .Net 4, then you can do the following:

var result = a.Zip(b, (first, second) => new {first, second})
    .ToDictionary(val => val.first, val => val.second);

Without Zip, you can also do this:

var result = Enumerable.Range(0, a.Length).ToDictionary(i => a[i], i => b[i]);