How to get the Invert indexs from array1 (if the element is absent in array2) 'linq'

Question

hi

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     Dim array1()as string = {"1", "2", "3", "4", "5", "6", "7", "8"}
     Dim array2()as string = {"1", "2", "3", "5", "6", "8"}
     'Result  output as integer (0,1,2,4,5,7) Invert

Answer 1

Hi @Mansour_Dalir ,

You can refer to the following code.

Dim resultIndexes As Integer() = array1.
    Select(Function(element, index) New With {.Element = element, .Index = index}).
    Where(Function(item) array2.Contains(item.Element)).
    Select(Function(item) item.Index).
    ToArray()

Best Regards.

Jiachen Li

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