Disjoint Union in LINQ
I have two sets (ILists) where I need all the items from the 1st list, where the item is not in the second list. Can anyone point me to the best way of achieving this with a LINQ statement? ...
disjoint-union
mysql SELECT NOT IN () -- disjoint set?
Hello, I'm having a problem getting a query to work, which I think should work. It's in the form SELECT DISTINCT a, b, c FROM t1 WHERE NOT IN ( SELECT DISTINCT a,b,c FROM t2 ) AS alias But mysql chokes where "IN (" starts. Does mysql support this syntax? If not, how can I go about getting these results? I want to find distinct tuples ...
O(1) Make, Find, Union in Disjoint Sets Data Structure
Today, I had discussion with someone about Kruskal Minimum Spanning Tree algorithm because of page 13 of this slide. The author of the presentation said that if we implement disjoint sets using (doubly) linked list, the performance for Make and Find will be O(1) and O(1) respectively. The time for operation Union(u,v) is min(nu,nv), wh...