day02

src/de/domainforge/aoc2017/Day02.java

@@ -0,0 +1,51 @@
+package de.domainforge.aoc2017;
+
+import de.domainforge.tools.AOCDay;
+import java.util.ArrayList;
+
+public class Day02 extends AOCDay {
+    public Day02(String input) { super(input); }
+
+    @Override
+    public String part1() {
+        String[] input = this.getInputAsArray();
+        int res = 0;
+        for (String line : input) {
+            int min = Integer.MAX_VALUE;
+            int max = 0;
+            String[] items = line.strip().split("[\s\t]+");
+            for (String item : items) {
+                int value = Integer.parseInt(item);
+                if (value < min) {
+                    min = value;
+                }
+                if (value > max) {
+                    max = value;
+                }
+            }
+            res += (max - min);
+        }
+
+        return String.valueOf(res);
+    }
+
+    @Override
+    public String part2() {
+        String[] input = this.getInputAsArray();
+        int res = 0;
+        for (String line : input) {
+            ArrayList<Integer> items = new ArrayList<>();
+            for (String number : line.strip().split("[\s\t]+")) {
+                items.add(Integer.parseInt(number));
+            }
+            for (Integer i : items) {
+                for (Integer j : items) {
+                    if (i % j == 0 && i / j != 1) {
+                        res += i / j;
+                    }
+                }
+            }
+        }
+        return String.valueOf(res);
+    }
+}

src/resources/input02

@@ -0,0 +1,16 @@
+62	1649	1731	76	51	1295	349	719	52	1984	2015	2171	981	1809	181	1715
+161	99	1506	1658	84	78	533	242	1685	86	107	1548	670	960	1641	610
+95	2420	2404	2293	542	2107	2198	121	109	209	2759	1373	1446	905	1837	111
+552	186	751	527	696	164	114	530	558	307	252	200	481	142	205	479
+581	1344	994	1413	120	112	656	1315	1249	193	1411	1280	110	103	74	1007
+2536	5252	159	179	4701	1264	1400	2313	4237	161	142	4336	1061	3987	2268	4669
+3270	1026	381	185	293	3520	1705	1610	3302	628	3420	524	3172	244	295	39
+4142	1835	4137	3821	3730	2094	468	141	150	3982	147	4271	1741	2039	4410	179
+1796	83	2039	1252	84	1641	2165	1218	1936	335	1807	2268	66	102	1977	2445
+96	65	201	275	257	282	233	60	57	200	216	134	72	105	81	212
+3218	5576	5616	5253	178	3317	6147	5973	2424	274	4878	234	200	4781	5372	276
+4171	2436	134	3705	3831	3952	2603	115	660	125	610	152	4517	587	1554	619
+2970	128	2877	1565	1001	167	254	2672	59	473	2086	181	1305	162	1663	2918
+271	348	229	278	981	1785	2290	516	473	2037	737	2291	2521	1494	1121	244
+2208	2236	1451	621	1937	1952	865	61	1934	49	1510	50	1767	59	194	1344
+94	2312	2397	333	1192	106	2713	2351	2650	2663	703	157	89	510	1824	125

test/de/domainforge/aoc2017/Day02Test.java

@@ -0,0 +1,39 @@
+package de.domainforge.aoc2017;
+
+import de.domainforge.tools.AOCDay;
+import de.domainforge.tools.FileHelper;
+import org.junit.jupiter.api.Test;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Objects;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class Day02Test {
+
+    @Test
+    void part1() throws IOException {
+        HashMap<String, String> tests = new HashMap<>();
+        tests.put("input02_1_1", "18");
+
+        for (String inputFileName : tests.keySet()) {
+            File inputFile = new File(Objects.requireNonNull(Main.class.getClassLoader().getResource(inputFileName)).getPath());
+            AOCDay day = new Day02(FileHelper.readFileToString(inputFile));
+            assertEquals(tests.get(inputFileName), day.part1());
+        }
+    }
+
+    @Test
+    void part2() throws IOException {
+        HashMap<String, String> tests = new HashMap<>();
+        tests.put("input02_2_1", "9");
+
+        for (String inputFileName : tests.keySet()) {
+            File inputFile = new File(Objects.requireNonNull(Main.class.getClassLoader().getResource(inputFileName)).getPath());
+            AOCDay day = new Day02(FileHelper.readFileToString(inputFile));
+            assertEquals(tests.get(inputFileName), day.part2());
+        }
+    }
+}

test/resources/input02_1_1

@@ -0,0 +1,3 @@
+5 1 9 5
+7 5 3
+2 4 6 8

test/resources/input02_2_1

@@ -0,0 +1,3 @@
+5 9 2 8
+9 4 7 3
+3 8 6 5