2个集合合并，有相同的只取中其一个:
source code:
int[] a = { 3, 5, 7 }; int[] b = { 5, 6, 9 }; var result = a.Union(b); result.ForEach(delegate (int n) { WriteLiteral(n + "
"); });
2个集合合并，有相同的只取中其一个:
source code:
int[] a = { 3, 5, 7 }; int[] b = { 5, 6, 9 }; var result = a.Union(b); result.ForEach(delegate (int n) { WriteLiteral(n + "
"); });
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