[day2] part1 use parse

src/main/java/CieDuVaseDesNoces/Day2.java

@@ -8,35 +8,29 @@ import static java.lang.Integer.parseInt;
 
 public class Day2 extends Day {
 
-    HashMap<String, Integer> limit = new HashMap<>(3);
-    Map<Integer, Map<String, Integer>> maxQty = new HashMap<>(input.size());
+    Map<Integer, Map<String, Integer>> maxQtyByGame =
+            new HashMap<>(input.size());
 
     Day2(String inputName) {
         super(inputName);
         parse();
-        limit.put("red", 12);
-        limit.put("green", 13);
-        limit.put("blue", 14);
     }
 
     String part1() {
-        int ans = 0;
-        for (String game : input) {
-            String[] tmp = game.split(": ", 2);
-            int gameId = parseInt(tmp[0].substring("Game ".length()));
-            boolean possible = true;
-            for (String set : tmp[1].split("; ")) {
-                for (String cubes : set.split(", ")) {
-                    String[] colorQty = cubes.split(" ", 2);
-                    if (parseInt(colorQty[0]) > limit.get(colorQty[1])) {
-                        possible = false;
-                        break;
-                    }
-                }
-                if (!possible) break;
-            }
-            if (possible) ans += gameId;
-        }
+        HashMap<String, Integer> limits = new HashMap<>(3);
+        limits.put("red", 12);
+        limits.put("green", 13);
+        limits.put("blue", 14);
+        return part1(limits);
+    }
+
+    String part1(Map<String, Integer> limits) {
+        int ans = maxQtyByGame.keySet()
+                .stream()
+                .filter(gameId -> maxQtyByGame.get(gameId).entrySet().stream()
+                        .allMatch(colorMax -> colorMax.getValue() <=
+                                limits.get(colorMax.getKey())))
+                .mapToInt(x -> x).sum();
         return String.valueOf(ans);
     }
 
@@ -53,12 +47,12 @@ public class Day2 extends Day {
                         currentMaxQty.get(colorQty[1])));
             }
             Integer gameId = Integer.valueOf(tmp[0].substring(5));
-            maxQty.put(gameId, currentMaxQty);
+            maxQtyByGame.put(gameId, currentMaxQty);
         }
     }
 
     String part2() {
-        int ans = maxQty.values().stream()
+        int ans = maxQtyByGame.values().stream()
                 .map(game -> game.values().stream().mapToInt(x -> x)
                         .reduce(1, (x, y) -> x * y)).reduce(0, Integer::sum);
         return String.valueOf(ans);