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CostOFModule.java
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CostOFModule.java
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import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class CostOFModule {
public static List<String> costsOfNodes(List<String> lines) {
List<String> res=new ArrayList<>();
int n=lines.size();
List<Map<Character,List<Character>>> adj=new ArrayList<>();
for (int i = 0; i < n; i++) {
adj.add(new HashMap<>());
}
for (int i = 0; i < n; i++) {
String s = lines.get(i);
s=s.replace(",","");
Map<Character, List<Character>> characterListMap = adj.get(i);
char key=s.charAt(0);
for (int j = s.length()-1; j >0 ; j--) {
List<Character> list = characterListMap.get(s.charAt(j));
if(list==null) {
list = new ArrayList<>();
list.add(key);
characterListMap.put(s.charAt(j),list);
}
else{
List<Character> list1 = characterListMap.get(s.charAt(j));
list1.add(key);
characterListMap.put(s.charAt(j),list);
}
}
}
return null;
}
public static void main(String[] args) {
String s="A,E,N,S";
String s2="S,H,N";
String s3="E,N";
String s4="H";
String s5="N";
ArrayList<String> list = new ArrayList<>();
list.add(s);
list.add(s2);
list.add(s3);
list.add(s4);
list.add(s5);
List<String> list1 = costsOfNodes(list);
}
}