commit 0ee588a595285446c83fa822f69b2823aa824315
parent ac9d8b4903da4a6f62ddb34cb27c7eb53732bd16
Author: Jake Bauer <jbauer@paritybit.ca>
Date: Wed, 17 May 2023 20:41:45 -0400
Basic file I/O and classes with AoC Day 1 challenge
Diffstat:
4 files changed, 2351 insertions(+), 0 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1 @@
+*.class
diff --git a/file-operations/aoc-day1/Main.java b/file-operations/aoc-day1/Main.java
@@ -0,0 +1,22 @@
+// Using the Advent of Code 2022 Day 1 challenge as a practical example for
+// reading and writing to a file.
+
+import java.util.Scanner;
+
+public class Main {
+ public static void main(String[] args) {
+ System.out.println("Advent of Code 2022, Day 1");
+
+ Scanner sc = new Scanner(System.in);
+ System.out.print("File containing input data: ");
+ String fileName = sc.nextLine();
+
+ Solver solver = new Solver(fileName);
+
+ int result = solver.solvePartOne();
+ System.out.println("Part One: " + result);
+
+ result = solver.solvePartTwo();
+ System.out.println("Part Two: " + result);
+ }
+};
diff --git a/file-operations/aoc-day1/Solver.java b/file-operations/aoc-day1/Solver.java
@@ -0,0 +1,76 @@
+import java.util.Scanner;
+import java.io.*;
+
+public class Solver {
+ String fileName;
+
+ public Solver(String fn) {
+ fileName = fn;
+ }
+
+ private Scanner openFile() {
+ try {
+ System.out.println("Opening " + this.fileName + "...");
+ File file = new File(this.fileName);
+ Scanner sc = new Scanner(file);
+ return sc;
+ }
+ catch (FileNotFoundException e) {
+ System.err.println("File " + this.fileName + " not found!");
+ System.exit(1);
+ }
+ return null;
+ }
+
+ // This feels sloppy
+ private void arrayInsert(int[] array, int index, int value) {
+ for (int i = 2; i > index; i--) {
+ array[i] = array[i-1];
+ }
+ array[index] = value;
+ }
+
+ // Find the elf carrying the most calories
+ public int solvePartOne() {
+ Scanner fileReader = openFile();
+ int mostCalories = 0;
+ int currentCalories = 0;
+ while (fileReader.hasNextLine()) {
+ String line = fileReader.nextLine();
+ if (line.isEmpty()) {
+ if (currentCalories > mostCalories) {
+ mostCalories = currentCalories;
+ }
+ currentCalories = 0;
+ continue;
+ }
+ currentCalories += Integer.parseInt(line);
+ }
+ fileReader.close();
+ return mostCalories;
+ }
+
+ // Find the top three elves carrying the most calories
+ public int solvePartTwo() {
+ Scanner fileReader = openFile();
+ int[] bestThree = { 0, 0, 0 };
+ int currentCalories = 0;
+ while (fileReader.hasNextLine()) {
+ String line = fileReader.nextLine();
+ if (line.isEmpty()) {
+ for (int i = 0; i < 3; i++) {
+ if (currentCalories > bestThree[i]) {
+ this.arrayInsert(bestThree, i, currentCalories);
+ break;
+ }
+ }
+ currentCalories = 0;
+ continue;
+ }
+ currentCalories += Integer.parseInt(line);
+ }
+ fileReader.close();
+ return bestThree[0] + bestThree[1] + bestThree[2];
+ }
+}
+
diff --git a/file-operations/aoc-day1/input.txt b/file-operations/aoc-day1/input.txt
@@ -0,0 +1,2252 @@
+18313
+2404
+10479
+
+7011
+10279
+1496
+10342
+8918
+3162
+4525
+4368
+
+17242
+
+10920
+14072
+9754
+4435
+9396
+
+5915
+2602
+4032
+3303
+2685
+1856
+1334
+4865
+6385
+1733
+5328
+
+8899
+5482
+3195
+7837
+8986
+13794
+
+25121
+22211
+21257
+
+6360
+4007
+5124
+2266
+6943
+6966
+3887
+3427
+1255
+5266
+6119
+2841
+
+6167
+3883
+2776
+5894
+2013
+6930
+6613
+4637
+5259
+2347
+3550
+5639
+5117
+
+4530
+5961
+5956
+2503
+5060
+4770
+5240
+4123
+4089
+6794
+3333
+5244
+4415
+
+1733
+1209
+4458
+1223
+3859
+7728
+9793
+8350
+
+2278
+3241
+4668
+1836
+3669
+2996
+1772
+5016
+6294
+6367
+1080
+5964
+5547
+
+4793
+13744
+9478
+7979
+1490
+12490
+
+6770
+7282
+2059
+5242
+13237
+9365
+
+2230
+6498
+1352
+3846
+3863
+6205
+5803
+2646
+4188
+4431
+6380
+1526
+2620
+4438
+
+24331
+23578
+
+4199
+5126
+5725
+1123
+2415
+5427
+5789
+4856
+2610
+4833
+3398
+4239
+1432
+5122
+
+5013
+4939
+11760
+8419
+5706
+3765
+10182
+
+11795
+9688
+1712
+2091
+9651
+13022
+
+10393
+11862
+1672
+5431
+6812
+1866
+5599
+
+2036
+6561
+4097
+3467
+4739
+7656
+3252
+4322
+5068
+2345
+4155
+
+3090
+1228
+1270
+8407
+8118
+4996
+7157
+3944
+6230
+2728
+
+5669
+2113
+3076
+1290
+7673
+1022
+5805
+5128
+7912
+7862
+4955
+
+20640
+
+4131
+4874
+5220
+9947
+9739
+1662
+9418
+9684
+
+4875
+3073
+1151
+11911
+10310
+10793
+10307
+
+6979
+4265
+8322
+3518
+1855
+4912
+5481
+7124
+4664
+
+19975
+16112
+19450
+7231
+
+3909
+4743
+3794
+4448
+3200
+3447
+3331
+7011
+3345
+3935
+6750
+
+3900
+14850
+4890
+9625
+4832
+
+23682
+1375
+
+7463
+8112
+10624
+1105
+6625
+5157
+5839
+1019
+
+19089
+36719
+
+5372
+7085
+8536
+8717
+6255
+5961
+3198
+7729
+3055
+
+4406
+2263
+6686
+1458
+2377
+2740
+1284
+3045
+7121
+3070
+
+19161
+10515
+1027
+
+7782
+1703
+1864
+3611
+1039
+2394
+3472
+6964
+5824
+8011
+3341
+
+56690
+
+5107
+1876
+4973
+5485
+4325
+6079
+3187
+3565
+2875
+7137
+3887
+6763
+
+2633
+2151
+1105
+2400
+5338
+3382
+1330
+3945
+6556
+1670
+5526
+4281
+2168
+
+5382
+2347
+4225
+1905
+4672
+6706
+5747
+5808
+1159
+4878
+5923
+
+11148
+8722
+3896
+15697
+3499
+
+46749
+
+13315
+20966
+
+1625
+6338
+7882
+1505
+4226
+9948
+6438
+6012
+
+1003
+10033
+5066
+7756
+10151
+10719
+5299
+5629
+
+4466
+6290
+7220
+3657
+8261
+7348
+8525
+4531
+4892
+7833
+
+24723
+7817
+
+4234
+4428
+5810
+2091
+4301
+1378
+2342
+3872
+1167
+2073
+6867
+7026
+
+7005
+10018
+3954
+4497
+4951
+1283
+5383
+
+4152
+4390
+8731
+8521
+5415
+1029
+8200
+3769
+
+7224
+12281
+8337
+8969
+13938
+9651
+
+10923
+14358
+8896
+8401
+7073
+
+3934
+4424
+4538
+4371
+2335
+6363
+1264
+4331
+5107
+2270
+3109
+2547
+2304
+5911
+
+4600
+5674
+2620
+1846
+3804
+2387
+4094
+3648
+4241
+5593
+2974
+2101
+1621
+3939
+
+7429
+9425
+9653
+5835
+
+13414
+4517
+15783
+3867
+
+2287
+1019
+11604
+11910
+2591
+2468
+10543
+
+13050
+1396
+13959
+6883
+
+6303
+2889
+4047
+3954
+2245
+6672
+4574
+5731
+5879
+2837
+5859
+4812
+6785
+
+10290
+10131
+5605
+3321
+2122
+6331
+9107
+7937
+
+1786
+1362
+7409
+2093
+3901
+1306
+2089
+1558
+4163
+6118
+6270
+1929
+
+4224
+3864
+3922
+3609
+2496
+2246
+5397
+1535
+5499
+4932
+3684
+1348
+3437
+3665
+
+2973
+4506
+3971
+2511
+4563
+3168
+2687
+6249
+2593
+6470
+4100
+6309
+1316
+4362
+
+14966
+2940
+11485
+
+6675
+16873
+5695
+14706
+
+3953
+
+5620
+1678
+3630
+5015
+3277
+4957
+5288
+5555
+2860
+1750
+2795
+6170
+6308
+
+3671
+1354
+4018
+4730
+4070
+1685
+4478
+1918
+5532
+3970
+3751
+4890
+4277
+2737
+5535
+
+14799
+8129
+
+5254
+2065
+1282
+2407
+5174
+4549
+4326
+1201
+3372
+3906
+6234
+4937
+4234
+2149
+
+5194
+2519
+3555
+6929
+4367
+4547
+
+1024
+37240
+
+3693
+6526
+2679
+5434
+7924
+2974
+1754
+4287
+4744
+4187
+1348
+
+6598
+5963
+6035
+5404
+3270
+1250
+5947
+3037
+3927
+3702
+5255
+1640
+6476
+
+4499
+5207
+1991
+4613
+3088
+5024
+4737
+5160
+2450
+3582
+2605
+2573
+1100
+3732
+
+1633
+5663
+2415
+4039
+4957
+2697
+5428
+5050
+3979
+3428
+4563
+3770
+3635
+4012
+4773
+
+7377
+6189
+10812
+6905
+11196
+5394
+10135
+
+10008
+2868
+2630
+8542
+8897
+2718
+5831
+4460
+
+1303
+4771
+1574
+2960
+5070
+1596
+5530
+4177
+4210
+6465
+4179
+1000
+4460
+6173
+
+6654
+1378
+2148
+8704
+6875
+4511
+7540
+6078
+5585
+4030
+
+4333
+5953
+5095
+4782
+3651
+4673
+3267
+6389
+2358
+2120
+3684
+3034
+3420
+1322
+
+8922
+9535
+16357
+16552
+
+1378
+1039
+1262
+2067
+6491
+2776
+1352
+4914
+5832
+1369
+6105
+1384
+2474
+1704
+
+6256
+2538
+4701
+4090
+4077
+5333
+2777
+4082
+4640
+2542
+6356
+3065
+4855
+2535
+
+6510
+3709
+4197
+4344
+5906
+6852
+7398
+3578
+3308
+1239
+3817
+5676
+
+5441
+3368
+1752
+2629
+1923
+4711
+1667
+3701
+1350
+4764
+6439
+2341
+4052
+
+6407
+5327
+1229
+4834
+6008
+1302
+5595
+5260
+3680
+3220
+3154
+3353
+1942
+1740
+
+2356
+1908
+3058
+4668
+3641
+1663
+4199
+2190
+6067
+3923
+3288
+1978
+6110
+5330
+
+7020
+2487
+6521
+1084
+6582
+1784
+7861
+2759
+8077
+2961
+
+68314
+
+2160
+15170
+2267
+3867
+6851
+
+8543
+4118
+22260
+
+5313
+3525
+1483
+3613
+5798
+1472
+4020
+5607
+4391
+2502
+5512
+5535
+3755
+5590
+3668
+
+25502
+7623
+15508
+
+2138
+1227
+11355
+1288
+7062
+5391
+3994
+
+7738
+3667
+5000
+1691
+7322
+8054
+4540
+2353
+6870
+8475
+
+4289
+6415
+1251
+4933
+7224
+2608
+2320
+4432
+4637
+1395
+6575
+5581
+
+6841
+1161
+5617
+12505
+6274
+9171
+
+13548
+20154
+20682
+
+2843
+7363
+5967
+15256
+16032
+
+7940
+6992
+3940
+3100
+1334
+1389
+5182
+6666
+4030
+6116
+3036
+
+35234
+19273
+
+7268
+10689
+
+1846
+4211
+1504
+3780
+3789
+2017
+6279
+5001
+2341
+6350
+5169
+1966
+2640
+5574
+
+2125
+8432
+8339
+8130
+3506
+6115
+4684
+9548
+3300
+
+6848
+1274
+6463
+12007
+10719
+10590
+5616
+
+4471
+1304
+1635
+5960
+3702
+1747
+3658
+2446
+4724
+5675
+1739
+3170
+3556
+
+9134
+12963
+6987
+
+5728
+7877
+6499
+5909
+1119
+3090
+5033
+4884
+3151
+
+10675
+8053
+9237
+14206
+11710
+
+49154
+
+5999
+3861
+1836
+3451
+3673
+5193
+2680
+6068
+1743
+5600
+4793
+6211
+2967
+1021
+
+24720
+
+8749
+11674
+4039
+5341
+14256
+
+4553
+3893
+1528
+5490
+2417
+2392
+4023
+2430
+4649
+3163
+3673
+1378
+1957
+1055
+
+10777
+4742
+16291
+16430
+12295
+
+6502
+6052
+2944
+8166
+7567
+3580
+5957
+4691
+1623
+3269
+
+1013
+5809
+16958
+4994
+
+36633
+
+8535
+13662
+24448
+
+6651
+7911
+
+19793
+2436
+
+4671
+4420
+5322
+1215
+4952
+1193
+2387
+2799
+2748
+1343
+4123
+1715
+2978
+2148
+6050
+
+2036
+4670
+5444
+4584
+4220
+6061
+2834
+2319
+1370
+4572
+4249
+4144
+3236
+3812
+3487
+
+55521
+
+3845
+1473
+6794
+4597
+5566
+2735
+2660
+6402
+2515
+3439
+
+3772
+12809
+5790
+10817
+9729
+
+1788
+2476
+4333
+2940
+7232
+3582
+8604
+3742
+7644
+4823
+
+6128
+6737
+5712
+4168
+4465
+2183
+1217
+2257
+6326
+5966
+5699
+2985
+2290
+
+5190
+4155
+10754
+9830
+4507
+2165
+7208
+4409
+
+4256
+4158
+1941
+3124
+5852
+3376
+6411
+5508
+5072
+2374
+4189
+4032
+4957
+2050
+
+2737
+6772
+4468
+2072
+1214
+6231
+7077
+6100
+6990
+5676
+
+7474
+4524
+8778
+7129
+8151
+7975
+7277
+8672
+8097
+3847
+
+29172
+7125
+
+50466
+
+14169
+22037
+
+4483
+1801
+4863
+1920
+2776
+1407
+3998
+1142
+2664
+3920
+5708
+5481
+5701
+5159
+3654
+
+1960
+4419
+5933
+4941
+4511
+1120
+5179
+3447
+5285
+3675
+1333
+1418
+4595
+4140
+2353
+
+1995
+5588
+1443
+5681
+3439
+6178
+5795
+5144
+2788
+6232
+2620
+4665
+5624
+
+37076
+7362
+
+3885
+8268
+10947
+9084
+3016
+10383
+9594
+
+16223
+16281
+5352
+11764
+10192
+
+5248
+3151
+7341
+8125
+10671
+13510
+
+1759
+7635
+7021
+3620
+7640
+4967
+3662
+3840
+7613
+3948
+1820
+
+4010
+3936
+7375
+8060
+12396
+8236
+
+5033
+2739
+4296
+5564
+6502
+3501
+5637
+5826
+5862
+5579
+6416
+2277
+2471
+
+4325
+2621
+1600
+4290
+15494
+
+6834
+15459
+10418
+12560
+6382
+
+8598
+1089
+11386
+9538
+6933
+3943
+
+14268
+7172
+7680
+15936
+
+5695
+
+69893
+
+7293
+4968
+7862
+3210
+1924
+4742
+3519
+1095
+5922
+6335
+2405
+
+4233
+3819
+7282
+10018
+3820
+5380
+9377
+8889
+
+13183
+9964
+4473
+12469
+9862
+6567
+
+4903
+1198
+5238
+1582
+1820
+6080
+10178
+
+4554
+6315
+2818
+5956
+2491
+5291
+5056
+3699
+2843
+1243
+5430
+2175
+
+31126
+
+5392
+1590
+3738
+2507
+2817
+6963
+6140
+4606
+2814
+7044
+1282
+
+12230
+1430
+4283
+11385
+2557
+6868
+
+3871
+2558
+1957
+4058
+1935
+5738
+1513
+5744
+4130
+3321
+3760
+4155
+1063
+3694
+
+67474
+
+2215
+8962
+5442
+7390
+6223
+3648
+2390
+5464
+
+5125
+3842
+2131
+3414
+6085
+3353
+3660
+1593
+4395
+2664
+4987
+2352
+5693
+1391
+1661
+
+6017
+5013
+5243
+3734
+3116
+1541
+6456
+2806
+6143
+1344
+5977
+5422
+2326
+2164
+
+33377
+
+5950
+5168
+1348
+3144
+5760
+6974
+8537
+6664
+1248
+
+9040
+4510
+5642
+8547
+9407
+5058
+6158
+7726
+6731
+
+4182
+5246
+2686
+4196
+3809
+3253
+3260
+3162
+2703
+6373
+6136
+2904
+6356
+5038
+
+3368
+11040
+5793
+13747
+10478
+5166
+
+11697
+10072
+8434
+5732
+
+5244
+6374
+1877
+2902
+4263
+4835
+2283
+2086
+6044
+6343
+6232
+2849
+3694
+6392
+
+13062
+12405
+12869
+16366
+1652
+
+8036
+1720
+7759
+13661
+1370
+3505
+
+5885
+1708
+10440
+7438
+11480
+4904
+8387
+
+4788
+10326
+6143
+11063
+9649
+9384
+
+5849
+1935
+7411
+4694
+4435
+1321
+5301
+2096
+2422
+5484
+6560
+3070
+
+5008
+5405
+9444
+6355
+13150
+12686
+
+1618
+5831
+1957
+1288
+1382
+2946
+1926
+1828
+1646
+4823
+3637
+1309
+5727
+4450
+
+66234
+
+4016
+4075
+4551
+5869
+2866
+2461
+1055
+4712
+7220
+1973
+4650
+
+2387
+1102
+4558
+2290
+1969
+3624
+2383
+4059
+4877
+3439
+6891
+3819
+5824
+
+3440
+11447
+5522
+16700
+
+8373
+1356
+7249
+8484
+6767
+7990
+8778
+2235
+5995
+8511
+
+5466
+6088
+2583
+5235
+6093
+3089
+1570
+6112
+3668
+2187
+5582
+1380
+4800
+5529
+2987
+
+12323
+4775
+11105
+3805
+7671
+6737
+
+3197
+1256
+4539
+6383
+1476
+2134
+6785
+7337
+1229
+4965
+5055
+
+13128
+8149
+4426
+8087
+2873
+
+1695
+8214
+7147
+7216
+1070
+2801
+5033
+8103
+7750
+5749
+
+4082
+1630
+1958
+6113
+4486
+2111
+1486
+6451
+5630
+5682
+4558
+
+10475
+30751
+
+5397
+5067
+1178
+2106
+5557
+4847
+1661
+3469
+4908
+2590
+4686
+2118
+4495
+2994
+
+12590
+12902
+8742
+15433
+2777
+
+7451
+8722
+7302
+2269
+9592
+6162
+
+1907
+6741
+4442
+6526
+8289
+7479
+9481
+1642
+4982
+
+2001
+12803
+7255
+13545
+10713
+
+14621
+25826
+20771
+
+1055
+8331
+7422
+8400
+2208
+6688
+8425
+6883
+4192
+4725
+
+9970
+10127
+2777
+3933
+9274
+3791
+9906
+
+2779
+1118
+2823
+1563
+9917
+6065
+1863
+1885
+
+5053
+1922
+5356
+8266
+7335
+4260
+8730
+7307
+3140
+
+4340
+1080
+2120
+5498
+6769
+6170
+2944
+4677
+1155
+4676
+2420
+4945
+5941
+
+14838
+3844
+19712
+16283
+
+1906
+3672
+4274
+6550
+6072
+5299
+4493
+3348
+2804
+3747
+3208
+5359
+
+59156
+
+6128
+5959
+12262
+12166
+4945
+9635
+
+8095
+1757
+13656
+7215
+2545
+6298
+
+7873
+6515
+6407
+4182
+4911
+3966
+1942
+7281
+5082
+7446
+5545
+
+3876
+5618
+4226
+4445
+3915
+1250
+5469
+3872
+5157
+5539
+2894
+1357
+1419
+4214
+3009
+
+3364
+6618
+1432
+7583
+6192
+2529
+2076
+6231
+7333
+
+5028
+2989
+3801
+1895
+2367
+5747
+2724
+1304
+3085
+2524
+1295
+1022
+2613
+4239
+4413
+
+3418
+23885
+
+3895
+3302
+1097
+3150
+1379
+1815
+1484
+2074
+2616
+3395
+6100
+5488
+1006
+3046
+
+1951
+8238
+6010
+3652
+6640
+7990
+3900
+8191
+
+6978
+3025
+1966
+7152
+5963
+7326
+1866
+2507
+4764
+1434
+3194
+3326
+
+3081
+6828
+6495
+3257
+4236
+4938
+7090
+2826
+6614
+1341
+7098
+6771
+
+18885
+3826
+13103
+1193
+
+16653
+13676
+19294
+13878
+
+7460
+4327
+7335
+4898
+6259
+7941
+5940
+5603
+3095
+5674
+2886
+
+8680
+4662
+8044
+8210
+5886
+9057
+7917
+3258
+5995
+
+2800
+
+31568
+
+5423
+33845
+
+8988
+13780
+9059
+14650
+9824
+
+10327
+13747
+10937
+4594
+6882
+
+2696
+2860
+1070
+1662
+6098
+2369
+2821
+3603
+3593
+5347
+4871
+4967
+2211
+3330
+5226
+
+8520
+1896
+1906
+5172
+6845
+1565
+6366
+5509
+5068
+
+4047
+4661
+2384
+1904
+4705
+5402
+6650
+6120
+4834
+5897
+6492
+6200
+5868
+
+4130
+1530
+9654
+9306
+8529
+2508
+8918
+4040
+3717
+
+3245
+4195
+11698
+10053
+6635
+4749
+
+12283
+11894
+8168
+
+6418
+7151
+4827
+2391
+8643
+2315
+8664
+3547
+6900
+4418
+
+65083
+
+5164
+1748
+8739
+4945
+2604
+5493
+5310
+3763
+6011
+4091
+
+4342
+2566
+6021
+4067
+1385
+2486
+4444
+1713
+3380
+4253
+4720
+1602
+4814
+3234
+1739
+
+13603
+22634
+
+7845
+
+4139
+8832
+7441
+1967
+6707
+7981
+3416
+10633
+
+4808
+9206
+6975
+4257
+6024
+5176
+
+10639
+9329
+5010
+7215
+4522
+8168
+9936
+9792
+
+4326
+4601
+6508
+2501
+3866
+3060
+2188
+6429
+1014
+1383
+6937
+5313
+4392
+
+8977
+2420
+1013
+4267
+9689
+2955
+5583
+2947
+5570
+
+5067
+1139
+4531
+3001
+7698
+2028
+8025
+1424
+6837
+1357
+2186
+
+5433
+19739
+5321
+
+5019
+4714
+2688
+5290
+1593
+1320
+1703
+2978
+1476
+3034
+3538
+2825
+5819
+5547
+
+6441
+1104
+3128
+7940
+5977
+8434
+4493
+2139
+1617
+4933
+
+3219
+3273
+12383
+6076
+11222
+5523
+
+8875
+1005
+4958
+3234
+3196
+5527
+9875
+7306
+
+1591
+6031
+2124
+1224
+7008
+2559
+4540
+7670
+
+5927
+4323
+5630
+1067
+5482
+1939
+5428
+3416
+3494
+2469
+4287
+5538
+1190
+4234
+1734
+
+10808
+15234
+14069
+10497
+7697
+
