(UVA) Open Credit System - Solution

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(Hacker Rank) Kruskal (MST): Really Special Subtree - Solution

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Link to the problem: https://www.hackerrank.com/challenges/kruskalmstrsub This problem requires to find the minimum spanning tree of the given graphs using Kruskal's algorithm. Although the problem gives a stating node, the solution below starts using the edge whose weight is the minimum. import java.io.*; import java.util.*; import java.text.*; import java.math.*; import java.util.regex.*; public class Solution {     public static ArrayList<Edge> edges;     public static int[] nodeParent;     public static int[] depth;         public static int root(int n) {         while (n != nodeParent[n]) {             n = nodeParent[n];         }         return n;     }         public static boolean union(int ...
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