Day 05 part 1

3 files changed, 330 insertions, 0 deletions

diff --git a/day05/day05.java b/day05/day05.java
new file mode 100644
index 0000000..d7d7992
--- /dev/null
+++ b/day05/day05.java
@@ -0,0 +1,158 @@
+import java.io.IOException;
+import java.io.RandomAccessFile;
+import java.util.Arrays;
+import java.util.ArrayList;
+import java.util.regex.Pattern;
+
+public class day05 {
+  public static void main(String args[]) throws IOException {
+    RandomAccessFile input = new RandomAccessFile("input", "r");
+    System.out.println("Day 05 Part 1: " + part1(input));
+    input.seek(0);
+    System.out.println("Day 05 Part 2: " + part2(input));
+    input.close();
+  }
+
+  public static String part1(RandomAccessFile input) throws IOException {
+    Garden garden = parseGarden(input);
+    
+    long min_loc = Long.MAX_VALUE;
+    for (long seed: garden.seeds) {
+      long loc = garden.location(seed);
+      if (loc < min_loc) {
+        min_loc = loc;
+      }
+    }
+
+    return Long.toString(min_loc);
+  }
+
+  public static String part2(RandomAccessFile input) throws IOException {
+    return "WIP";
+  }
+
+  private static Garden parseGarden(RandomAccessFile input) throws IOException {
+    Garden garden = new Garden();
+
+    String line;
+    int state = -1;
+    while ((line = input.readLine()) != null) {
+      if (Pattern.matches("\\Aseeds:.*", line)) {
+        String[] seeds = line.split(": ")[1].split(" ");
+        for (String seed: seeds) {
+          garden.seeds.add(Long.parseLong(seed));
+        }
+      } else if (Pattern.matches(".* map:\\z", line)) {
+        state += 1;
+      } else if (Pattern.matches("\\d+ \\d+ \\d+", line)) {
+        String[] linea = line.split(" ");
+        long dst = Long.parseLong(linea[0]);
+        long src = Long.parseLong(linea[1]);
+        long len = Long.parseLong(linea[2]);
+        switch (state) {
+          case 0:
+            garden.almanac.s2s.add(dst, src, len);
+            break;
+          case 1:
+            garden.almanac.s2f.add(dst, src, len);
+            break;
+          case 2:
+            garden.almanac.f2w.add(dst, src, len);
+            break;
+          case 3:
+            garden.almanac.w2l.add(dst, src, len);
+            break;
+          case 4:
+            garden.almanac.l2t.add(dst, src, len);
+            break;
+          case 5:
+            garden.almanac.t2h.add(dst, src, len);
+            break;
+          case 6:
+            garden.almanac.h2l.add(dst, src, len);
+            break;
+        }
+      }
+    }
+
+    return garden;
+  }
+}
+
+class Garden {
+  ArrayList<Long> seeds;
+  Almanac almanac;
+
+  public Garden() {
+    this.seeds = new ArrayList<>();
+    this.almanac = new Almanac();
+  }
+
+  public long location(long seed) {
+    long at = seed;
+    for (Map map: this.almanac.maps) {
+      for (MapEntry ent: map.mapEntries) {
+        if (ent.contains(at)) {
+          at = ent.map(at);
+          break;
+        }
+      }
+    }
+    return at;
+  }
+}
+
+class Almanac {
+  Map s2s, s2f, f2w, w2l, l2t, t2h, h2l;
+  ArrayList<Map> maps;
+
+  public Almanac() {
+    this.s2s = new Map();
+    this.s2f = new Map();
+    this.f2w = new Map();
+    this.w2l = new Map();
+    this.l2t = new Map();
+    this.t2h = new Map();
+    this.h2l = new Map();
+
+    ArrayList<Map> maps = new ArrayList<>();
+    maps.add(this.s2s);
+    maps.add(this.s2f);
+    maps.add(this.f2w);
+    maps.add(this.w2l);
+    maps.add(this.l2t);
+    maps.add(this.t2h);
+    maps.add(this.h2l);
+    this.maps = maps;
+  }
+}
+
+class Map {
+  ArrayList<MapEntry> mapEntries;
+
+  public Map() {
+    mapEntries = new ArrayList<>();
+  }
+
+  public void add(long dst, long src, long len) {
+    mapEntries.add(new MapEntry(dst, src, len));
+  }
+}
+
+class MapEntry {
+  long dst, src, len;
+
+  public MapEntry(long dst, long src, long len) {
+    this.dst = dst;
+    this.src = src;
+    this.len = len;
+  }
+
+  public boolean contains(long src) {
+    return src >= this.src && src < (this.src + this.len);
+  }
+
+  public long map(long src) {
+    return this.dst + (src - this.src);
+  }
+}
diff --git a/day05/input b/day05/input
new file mode 100644
index 0000000..2edcbfa
--- /dev/null
+++ b/day05/input
@@ -0,0 +1,139 @@
+seeds: 364807853 408612163 302918330 20208251 1499552892 200291842 3284226943 16030044 2593569946 345762334 3692780593 17215731 1207118682 189983080 2231594291 72205975 3817565407 443061598 2313976854 203929368
+
+seed-to-soil map:
+2069473506 3732587455 1483883
+3235691256 2348990120 6550341
+3547561069 1392195671 747406227
+3264251584 3734071338 283309485
+391285622 257757572 195552540
+1645243555 3166958320 377191689
+335002083 512210869 56283539
+3242241597 897735089 22009987
+77244511 0 257757572
+989159646 4172023334 122943962
+605476380 3544150009 188437446
+0 568494408 18343754
+2700122696 4050276683 121746651
+2022435244 2139601898 47038262
+2227672101 919745076 95840269
+1112103608 2633818373 533139947
+826809686 2186640160 162349960
+3100147259 762191092 135543997
+18343754 453310112 58900757
+2323512370 1015585345 282396986
+2605909356 1297982331 94213340
+2821869347 2355540461 278277912
+793913826 4017380823 32895860
+2070957389 605476380 156714712
+
+soil-to-fertilizer map:
+2700214958 2743391193 363795571
+1484584575 1440072796 24660284
+927520818 435059068 191969051
+1588488926 1434420334 5652462
+1423277199 141187887 5443857
+1594141388 1350997453 83422881
+1986188257 3933008893 120750463
+1509244859 146631744 79093544
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+3948206286 1986188257 277570873
+291046304 281588807 153470261
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+1677564269 1321192605 29804848
+2309878676 2336743687 390336282
+3079951473 3306332300 449116691
+444516565 1222012276 99180329
+543696894 1464733080 383823924
+3895169406 3771389935 53036880
+3529068164 4053759356 167102650
+0 627178642 291046304
+3696170814 2727079969 16311224
+3855550220 3824426815 39619186
+2106938720 3107186764 199145536
+1428721056 225725288 55863519
+1707369117 0 64378064
+1771747181 64378064 76809823
+3064010529 3755448991 15940944
+2306084256 2332949267 3794420
+4225777159 2263759130 69190137
+3786587328 3864046001 68962892
+1588338403 627028119 150523
+
+fertilizer-to-water map:
+2299879115 39069388 7889905
+514481680 504392888 101474410
+3448524168 0 25428313
+13641075 1832356728 472401611
+0 25428313 13641075
+1842445520 108629584 395763304
+486042686 3445513487 28438994
+2307769020 2304758339 1140755148
+2238208824 46959293 61670291
+615956090 605867298 1226489430
+
+water-to-light map:
+1318826171 2010420436 223477535
+2278894745 2233897971 671603259
+988189854 447584401 27746374
+2132052210 300741866 146842535
+0 1279660741 97125596
+3531244480 3147213622 507810286
+257581844 3816963790 101424269
+1298609589 3918388059 20216582
+3317726838 1072550929 21856732
+3065323607 1254863909 4121973
+97125596 1094407661 160456248
+359006113 1057194484 15356445
+374362558 1636971609 104335413
+4039054766 475330775 9209679
+1038424317 1376786337 260185272
+878530050 3938604641 109659804
+1784016098 3738041092 78922698
+3152462764 0 165264074
+1862938796 1741307022 269113414
+497536930 676201364 380993120
+3069445580 3655023908 83017184
+2950498004 165264074 114825603
+1015936228 1258985882 1835900
+478697971 1260821782 18838959
+1017772128 280089677 20652189
+1542303706 2905501230 241712392
+3339583570 484540454 191660910
+
+light-to-temperature map:
+2827696039 489007811 183207687
+1480301347 3744628626 306791400
+695239418 130668965 358338846
+1297125534 2232912413 183175813
+3979319170 1917264287 315648126
+3010903726 948848843 968415444
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+2303677395 672215498 276633345
+1787092747 3228043978 516584648
+2580310740 2416088226 247385299
+
+temperature-to-humidity map:
+4161466647 3871737509 133500649
+2423686895 2864370860 72123408
+1983529997 0 320533964
+3184295196 2695571092 41928210
+0 822932241 605870242
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+3226223406 2936494268 330853575
+2495810303 2737499302 126871558
+1108268519 1428802483 491674128
+605870242 320533964 502398277
+2622681861 2423686895 271884197
+2894566058 4005238158 289729138
+1599942647 1920476611 383587350
+
+humidity-to-location map:
+2945628300 1864953738 334378942
+3467273713 3579654586 715312710
+975015905 1356290883 508662855
+1483678760 2498980024 1080674562
+3443998409 2199332680 23275304
+3280007242 2222607984 163991167
+4182586423 2386599151 112380873
+2564353322 975015905 381274978
diff --git a/day05/test b/day05/test
new file mode 100644
index 0000000..f756727
--- /dev/null
+++ b/day05/test
@@ -0,0 +1,33 @@
+seeds: 79 14 55 13
+
+seed-to-soil map:
+50 98 2
+52 50 48
+
+soil-to-fertilizer map:
+0 15 37
+37 52 2
+39 0 15
+
+fertilizer-to-water map:
+49 53 8
+0 11 42
+42 0 7
+57 7 4
+
+water-to-light map:
+88 18 7
+18 25 70
+
+light-to-temperature map:
+45 77 23
+81 45 19
+68 64 13
+
+temperature-to-humidity map:
+0 69 1
+1 0 69
+
+humidity-to-location map:
+60 56 37
+56 93 4