Adds RankedCalorieCount for Day 1 Part 2 question, getting sum of top three calorie-bearing elves

Changes to be committed:
	new file:   2022/day01/RankedCalorieCount.java
	modified:   2022/day01/day01_algo.docx

2022/day01/RankedCalorieCount.java

@@ -0,0 +1,32 @@
+import java.nio.file.Paths;
+import java.io.IOException;
+import java.util.Scanner;
+import java.util.ArrayList;
+import java.util.Collections;
+
+public class RankedCalorieCount {
+    public static void main (String[] args) {
+        try (Scanner inputReader = new Scanner(Paths.get("input.txt"))) {
+            ArrayList<Integer> calsList = new ArrayList<Integer>();
+            while (inputReader.hasNext()) {
+                int currentCals = 0;
+                String inLine = new String();
+                do {
+                    inLine = inputReader.nextLine();
+                    if (!inLine.isEmpty()) {
+                        currentCals += Integer.parseInt(inLine);
+                    }
+                } while (!inLine.isEmpty() && inputReader.hasNext());
+                calsList.add(currentCals);
+            }
+
+            Collections.sort(calsList);
+            Collections.reverse(calsList);
+            int topThreeSum = calsList.get(0)+calsList.get(1)+calsList.get(2);
+            System.out.printf("The sum of calories by the top three is: %d%n", topThreeSum);
+        } catch (IOException e) {
+            System.out.println("IOException");
+			e.printStackTrace();
+        }        
+    }
+}