Linq compare 2 string arrays when both have same values

Question

I have 2 string arrays/values x,y and am trying to get values of y which are not in x. I am trying to get this value only in case if all values of x are also in y.

        string x = "CA ,WA";
        string y = "CA,WA,NY";
        var srcDetails = x.ToLower().Replace(" ", string.Empty).Split(',');
        var dstDetails = y.ToLower().Replace(" ", string.Empty).Split(',');

        var common = dstDetails.Intersect(srcDetails); //common in x,y

        var destGreaterSrc= dstDetails.Except(srcDetails); //if y > x

        var extraInDest = dstDetails.Except(common);

extraInDest is extra value in y which is not in x

In above code extra values in dest which is outputted as NY.

I am trying to find the scenario where values of x may not be equal to y like

    string x = "CA ,NV";
    string y = "CA,WA,NY";

how can we make var extraInDest output to false.

like var extraInDest = dstDetails.Except(common) resulting false or null

string x = "CA ,WA"; string y = "CA,WA,NY"; var srcDetails = x.Split(','); var dstDetails = y.Split(','); var extraInSrc = srcDetails.Where(s => !dstDetails.Select(d => d.Trim().ToLower()).Contains(s.Trim().ToLower())).ToList(); if (extraInSrc.Count() <= 0) // If all X values are present in Y { var extraInDst = dstDetails.Where(s => !srcDetails.Select(d => d.Trim().ToLower()).Contains(s.Trim().ToLower())).ToList(); } — kashi_rock
– kashi_rock, Commented Oct 18, 2016 at 5:20

grafgenerator · Accepted Answer · 2016-10-18 05:37:53Z

1

The simpliest one would be

var extraInDest = srcDetails.Except(dstDetails).Any()
    ? null 
    : dstDetails.Except(srcDetails);

answered Oct 18, 2016 at 5:37

grafgenerator

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1 Comment

grafgenerator Over a year ago

@Kurkula so does this one helped you?

Owuor · Accepted Answer · 2016-10-18 05:44:59Z

1

This should be simple, if your comparison should always result in a boolean value, you should use this instead

bool extraInDest = srcDetails.All(v=>dstDetails.Contains(v));

answered Oct 18, 2016 at 5:44

Owuor

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