int[] oldArray = { 1, 2, 3, 4, 5 };
int[] newArray = { 2, 4, 5, 7, 8, 9 };
var jiaoJi = oldArray.Intersect(newArray).ToList();//2,4,5
var oldChaJi = oldArray.Except(newArray).ToList();//1,3
var newChaJi = newArray.Except(oldArray).ToList();//7,8,9
var bingJi = oldArray.Union(newArray).ToList();//1,2,3,4,5,7,8,9
Intersect交集Except差集Union并集实例
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转载自www.cnblogs.com/huang34/p/9475924.html
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