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Day1.java
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Day1.java
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import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
public class Day1 {
private static int findElfWithMaxCalories() throws IOException{
List<Integer> list = new ArrayList<>();
try(BufferedReader br = new BufferedReader(new FileReader("input_1.txt"))) {
String line = br.readLine();
int current = 0;
while (line != null) {
if (!line.equals("")){
current += Integer.parseInt(line);
} else {
list.add(current);
current = 0;
}
line = br.readLine();
}
int max = Collections.max(list);
return max;
}
}
private static int findTop3ElfsWithMaxCalories() throws IOException{
List<Integer> list = new ArrayList<>();
try(BufferedReader br = new BufferedReader(new FileReader("input_1.txt"))) {
String line = br.readLine();
int current = 0;
while (line != null) {
if (!line.equals("")){
current += Integer.parseInt(line);
} else {
list.add(current);
current = 0;
}
line = br.readLine();
}
int max = Collections.max(list);
list.remove(list.indexOf(max));
int maxTwo = Collections.max(list);
list.remove(list.indexOf(maxTwo));
int maxThree = Collections.max(list);
System.out.println(max);
System.out.println(maxTwo);
System.out.println(maxThree);
return max + maxTwo + maxThree;
}
}
public static void main(String[] args) throws IOException {
System.out.println("Elf with top number of calories: " + findElfWithMaxCalories());
System.out.println("Top 3 elfs number of calories: " + findTop3ElfsWithMaxCalories());
}
}