Linq 数据操作，两个数组求差交集并集

Posted 2020-07-13 Reysl

    int[] a = { 1, 2, 3, 4, 5, 6, 7 };
    int[] b = { 4, 5, 6, 7, 8, 9, 10 };
    int[] c = { 1, 2, 3, 3, 4, 1, 2, 4, 6, 1, 6, 5 };

    // 交集
    var ** = a.Intersect(b);
      4,5,6,7
    // 并集
    var ** = a.Union(b);
     1,2,3,4,5,6,7,8,9,10
    // a有b没有的
    var diff1 = a.Except(b);
      1,2,3,9,10
    // b有a没有的
    var diff2 = b.Except(a);
     8,9,10
    var max = a.Max();
    var min = a.Min();
    var avg = a.Average();
    var dis = c.Distinct();