Context added

Author: MarcosVillacanas

DataStructures/Graphs/Kruskal.java

@@ -1,4 +1,9 @@
-package Kruskal;
+//Problem -> Connect all the edges with the minimum cost.
+//Possible Solution -> Kruskal Algorithm (KA), KA finds the minimum-spanning-tree, which means, the group of edges with the minimum sum of their weights that connect the whole graph.
+//The graph needs to be connected, because if there are nodes impossible to reach, there are no edges that could connect every node in the graph.
+//KA is a Greedy Algorithm, because edges are analysed based on their weights, that is why a Priority Queue is used, to take first those less weighted.
+//This implementations below has some changes compared to conventional ones, but they are explained all along the code.
+//In case you need to know anyhing else, I would be willing to answer all your doubts, you can contact me by https://www.linkedin.com/in/marcosvillacanas/
 
 import java.util.Comparator;
 import java.util.HashSet;