LINQ Union Operator
LINQ Union operator is used for finding unique elements between two sequences (Collections). For example, suppose we have two collections A = { 1, 2, 3 }, and B = { 3, 4, 5 }. Union operator will find unique elements in both sequences. { 3 } element is available in both sequences. So union operator only takes one element in the result. C = { 1, 2, 3, 4, 5 }. Union operator is only supported...