Day 09 Part 2 Complete
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11 19 27 35 43 51 59 67 75 83 91 99 107 115 123 131 139 147 155 163 171
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-3 -2 0 3 7 12 18 25 33 42 52 63 75 88 102 117 133 150 168 187 207
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16 28 60 120 221 394 706 1295 2444 4734 9352 18704 37635 75858 152752 306665 612472 1213680 2379212 4600600 8753233
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15 30 73 169 364 736 1417 2646 4892 9119 17317 33499 65469 127805 246679 467358 865501 1563692 2755033 4736069 7951834
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9 16 39 93 197 379 696 1288 2496 5091 10702 22627 47406 97886 199085 399048 788179 1532338 2927433 5486449 10073987
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16 25 38 66 146 350 804 1736 3586 7243 14542 29286 59292 120344 243528 488292 964796 1870781 3550390 6585226 11931550
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7 21 51 100 173 277 421 616 875 1213 1647 2196 2881 3725 4753 5992 7471 9221 11275 13668 16437
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10 14 30 69 135 232 385 676 1299 2647 5459 11076 21882 42039 78664 143641 256312 447348 764164 1278311 2095353
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6 16 22 36 81 187 386 715 1256 2273 4547 10070 23370 53970 120956 261531 547038 1112622 2210968 4307040 8240259
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11 8 0 -15 -29 -12 100 417 1107 2408 4640 8217 13659 21604 32820 48217 68859 95976 130976 175457 231219
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-2 5 23 65 172 437 1039 2287 4674 8941 16151 27773 45776 72733 111935 167515 244582 349365 489367 673529 912404
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-3 13 45 94 161 247 353 480 629 801 997 1218 1465 1739 2041 2372 2733 3125 3549 4006 4497
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12 16 26 51 103 202 405 870 1965 4434 9640 19935 39296 74578 138165 253576 466866 868644 1634430 3095131 5854885
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9 6 14 44 107 214 376 604 909 1302 1794 2396 3119 3974 4972 6124 7441 8934 10614 12492 14579
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23 31 36 38 37 33 26 16 3 -13 -32 -54 -79 -107 -138 -172 -209 -249 -292 -338 -387
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20 30 37 49 93 236 618 1497 3306 6722 12747 22801 38827 63408 99896 152553 226704 328902 467105 650865 891529
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15 22 19 4 -10 32 278 1049 2963 7144 15599 31916 62582 119574 225741 426501 815770 1593226 3188564 6524862 13563153
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-1 4 18 53 133 297 614 1238 2550 5463 12010 26399 56808 118312 237488 459438 858209 1551878 2723914 4652833 7752631
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17 27 49 107 239 500 965 1732 2925 4697 7233 10753 15515 21818 30005 40466 53641 70023 90161 114663 144199
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11 33 71 137 252 464 874 1666 3142 5780 10383 18514 33688 64313 130245 276161 596940 1283361 2702081 5535642 11034321
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-1 -1 8 43 125 290 622 1325 2857 6155 12986 26465 51787 97226 175460 305287 513803 839119 1333700 2068415 3137393
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1 3 11 31 74 162 348 758 1664 3598 7518 15038 28735 52547 92277 156219 255923 407117 630805 954561 1414040
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19 31 44 65 116 241 520 1109 2336 4892 10165 20791 41584 81243 155758 295456 559429 1064049 2036886 3914209 7510104
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-5 -3 16 64 153 295 502 786 1159 1633 2220 2932 3781 4779 5938 7270 8787 10501 12424 14568 16945
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17 43 91 178 329 579 975 1578 2465 3731 5491 7882 11065 15227 20583 27378 35889 46427 59339 75010 93865
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12 22 42 71 108 152 202 257 316 378 442 507 572 636 698 757 812 862 906 943 972
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9 17 36 66 107 159 222 296 381 477 584 702 831 971 1122 1284 1457 1641 1836 2042 2259
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-8 -4 8 38 118 310 719 1514 2964 5509 9908 17537 30950 54865 97795 174611 310400 546066 946216 1609976 2685494
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15 39 72 114 165 225 294 372 459 555 660 774 897 1029 1170 1320 1479 1647 1824 2010 2205
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17 30 57 116 239 486 977 1956 3906 7735 15062 28676 53381 97817 178780 331735 635984 1272841 2654580 5698117 12381760
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11 20 29 38 47 56 65 74 83 92 101 110 119 128 137 146 155 164 173 182 191
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23 31 43 78 163 331 620 1070 1721 2641 4080 6998 14541 35712 93820 244839 615515 1479569 3405609 7537760 16119327
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-2 -4 -12 -13 24 156 485 1195 2629 5473 11209 23182 48965 105312 228041 491002 1041486 2165356 4406665 8789322 17233490
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1 10 28 52 79 106 130 148 157 154 136 100 43 -38 -146 -284 -455 -662 -908 -1196 -1529
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26 50 100 200 394 756 1412 2587 4690 8450 15116 26734 46514 79300 132156 215081 341866 531106 807380 1202612 1757626
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17 32 56 97 167 294 559 1185 2713 6313 14306 31027 64265 127742 245589 460825 851908 1565171 2877195 5310650 9840018
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29 57 105 177 287 471 799 1387 2409 4109 6813 10941 17019 25691 37731 54055 75733 104001 140273 186153 243447
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20 40 68 107 160 230 320 433 572 740 940 1175 1448 1762 2120 2525 2980 3488 4052 4675 5360
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7 22 57 129 268 539 1085 2213 4558 9383 19132 38501 76634 151785 301268 602352 1214945 2466051 5011629 10137742 20306500
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11 13 25 51 103 211 439 909 1842 3645 7119 13957 27875 57019 118784 248965 518377 1061933 2127937 4159415 7925179
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26 55 101 176 309 552 985 1720 2904 4721 7393 11180 16379 23322 32373 43924 58390 76203 97805 123640 154145
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9 12 13 14 36 147 502 1395 3326 7091 13918 25713 45571 78888 135761 236052 419855 768766 1448395 2791736 5459054
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19 34 44 44 29 -6 -66 -156 -281 -446 -656 -916 -1231 -1606 -2046 -2556 -3141 -3806 -4556 -5396 -6331
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9 14 21 30 41 54 69 86 105 126 149 174 201 230 261 294 329 366 405 446 489
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14 29 56 107 213 436 882 1714 3169 5593 9529 15949 26878 47062 88264 179732 392224 890112 2038800 4616520 10215759
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-8 -1 32 114 281 601 1223 2470 5004 10115 20215 39647 75943 141679 257074 453459 777696 1297551 2107914 3337608 5156333
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19 29 54 119 254 502 951 1801 3477 6799 13220 25143 46328 82400 141469 234873 378055 591585 902338 1344839 1962786
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5 4 3 22 105 343 913 2134 4539 8956 16578 28979 47997 75353 111804 155535 199377 226292 202389 66524 -284711
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1 4 15 43 97 186 319 505 753 1072 1471 1959 2545 3238 4047 4981 6049 7260 8623 10147 11841
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19 40 88 171 302 507 837 1390 2362 4176 7787 15332 31409 65498 136531 281635 572981 1149916 2278550 4457913 8600352
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-4 -5 -10 -15 -13 9 77 251 682 1739 4252 9929 22017 46289 92451 176075 321176 563563 955106 1569073 2506703
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11 24 42 63 85 106 124 137 143 140 126 99 57 -2 -80 -179 -301 -448 -622 -825 -1059
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10 29 65 141 307 655 1336 2588 4789 8549 14850 25249 42228 70021 116879 201090 365668 711205 1463967 3108277 6630345
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20 35 53 69 76 69 56 89 344 1306 4157 11531 28909 67113 146675 305384 611160 1183713 2230401 4104533 7398350
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-1 -7 -12 -14 -1 57 221 606 1432 3162 6874 15169 34157 77398 173088 376175 787172 1578466 3025279 5528847 9597710
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4 11 19 43 121 321 751 1572 3004 5315 8818 14021 22371 38650 77224 176275 427156 1030391 2395821 5312043 11219397
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17 20 16 -2 -37 -76 -68 114 731 2268 5603 12379 25828 52457 105162 208404 405921 770848 1416766 2505680 4244677
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25 44 86 164 286 463 742 1274 2425 4934 10122 20175 38584 70953 126621 221975 387207 680246 1216224 2231404 4223440
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30 58 110 199 351 616 1079 1871 3180 5262 8452 13175 19957 29436 42373 59663 82346 111618 148842 195559 253499
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24 34 48 68 94 137 237 496 1148 2692 6114 13244 27402 54840 108412 217037 449032 966338 2143496 4815536 10771438
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-3 -8 -13 -18 -23 -28 -33 -38 -43 -48 -53 -58 -63 -68 -73 -78 -83 -88 -93 -98 -103
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21 40 83 180 379 744 1358 2347 3949 6676 11669 21442 41386 82749 168542 345411 707857 1447860 2955575 6019392 12212385
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-5 -8 -11 -14 -17 -20 -23 -26 -29 -32 -35 -38 -41 -44 -47 -50 -53 -56 -59 -62 -65
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23 35 62 110 185 298 470 737 1155 1805 2798 4280 6437 9500 13750 19523 27215 37287 50270 66770 87473
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11 33 84 184 364 684 1263 2321 4233 7595 13302 22638 37378 59902 93321 141615 209783 304005 431816 602292 826248
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22 42 88 187 395 821 1662 3256 6165 11305 20145 35002 59464 98978 161645 259269 408712 633612 966526 1451565 2147593
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19 38 71 130 242 452 821 1431 2434 4214 7766 15434 32207 67899 140848 284466 559397 1076714 2042265 3840014 7184432
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27 56 100 156 232 361 623 1188 2399 4919 9976 19769 38168 71982 133319 243967 443339 802410 1447300 2597802 4628304
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-5 -7 -8 -8 -7 -5 -2 2 7 13 20 28 37 47 58 70 83 97 112 128 145
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-3 9 46 137 328 693 1367 2628 5068 9906 19509 38200 73445 137524 249804 439745 750783 1245247 2010480 3166347 4874326
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1 13 38 77 131 201 288 393 517 661 826 1013 1223 1457 1716 2001 2313 2653 3022 3421 3851
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13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
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|
||||
-3 2 17 54 147 369 868 1945 4215 8916 18453 37271 73125 138733 253632 445774 751961 1215582 1879233 2768620 3862607
|
||||
20 23 26 36 70 171 440 1097 2593 5821 12533 26179 53571 108095 215757 426377 834186 1615819 3100908 5904194 11173524
|
||||
10 20 42 76 122 180 250 332 426 532 650 780 922 1076 1242 1420 1610 1812 2026 2252 2490
|
||||
12 20 28 36 44 52 60 68 76 84 92 100 108 116 124 132 140 148 156 164 172
|
||||
6 23 45 69 107 196 416 934 2099 4622 9886 20444 40778 78409 145467 260851 453132 764377 1255099 2010567 3148741
|
||||
26 36 53 91 163 289 511 909 1622 2900 5258 9893 19693 41457 90412 198823 431522 912620 1869611 3703639 7097999
|
||||
14 15 19 39 98 241 569 1304 2899 6234 13006 26559 53672 108364 219866 449102 922329 1898779 3904168 7988507 16212107
|
||||
19 28 36 39 30 -1 -67 -184 -371 -650 -1046 -1587 -2304 -3231 -4405 -5866 -7657 -9824 -12416 -15485 -19086
|
||||
10 23 36 49 62 75 88 101 114 127 140 153 166 179 192 205 218 231 244 257 270
|
||||
12 21 35 61 126 285 637 1370 2868 5929 12171 24755 49646 97785 188781 357080 662060 1204173 2150147 3771417 6501422
|
||||
9 6 2 -3 -9 -16 -24 -33 -43 -54 -66 -79 -93 -108 -124 -141 -159 -178 -198 -219 -241
|
||||
7 8 22 69 176 386 788 1577 3152 6261 12211 23206 43021 78589 143912 269497 524285 1064876 2242897 4833512 10510884
|
||||
12 25 38 51 64 77 90 103 116 129 142 155 168 181 194 207 220 233 246 259 272
|
||||
8 22 41 78 164 356 751 1511 2908 5413 9899 18142 34057 66633 136587 290821 632724 1383808 3005877 6437550 13542006
|
||||
0 -3 -2 24 119 354 837 1752 3476 6871 13933 29137 62113 132839 281539 587258 1202215 2414497 4761306 9232575 17638400
|
||||
17 42 92 188 376 751 1488 2892 5504 10333 19328 36267 68344 128934 242423 452813 839399 1545708 2832888 5176966 9442396
|
||||
17 21 38 82 169 317 546 878 1337 1949 2742 3746 4993 6517 8354 10542 13121 16133 19622 23634 28217
|
||||
21 29 37 45 53 61 69 77 85 93 101 109 117 125 133 141 149 157 165 173 181
|
||||
7 8 13 26 57 122 243 448 771 1252 1937 2878 4133 5766 7847 10452 13663 17568 22261 27842 34417
|
||||
-5 -5 2 19 42 55 20 -144 -597 -1621 -3634 -7089 -12094 -17477 -18868 -5172 47443 185227 491754 1110051 2274466
|
||||
23 44 72 106 161 283 572 1232 2681 5771 12194 25194 50779 99746 191014 357026 652355 1167158 2047796 3527810 5973549
|
||||
9 30 73 159 318 589 1020 1668 2599 3888 5619 7885 10788 14439 18958 24474 31125 39058 48429 59403 72154
|
||||
14 11 18 49 122 275 601 1312 2848 6066 12592 25513 50747 99691 194178 375523 720847 1372745 2594617 4877979 9159341
|
||||
-7 -6 10 51 127 250 451 833 1702 3859 9215 22033 51334 115355 249438 519373 1043015 2023928 3801840 6925759 12256609
|
||||
8 16 35 75 165 367 801 1701 3535 7235 14596 28916 55962 105360 192520 341220 586986 981418 1597625 2536945 3937139
|
||||
8 9 22 53 110 213 423 913 2130 5147 12394 29110 66104 144789 306003 624906 1235300 2368125 4410710 7995683 14131354
|
||||
12 24 51 109 222 429 805 1504 2832 5358 10071 18591 33442 58395 98889 162538 259732 404340 614523 913665 1331430
|
||||
2 -6 -7 20 111 320 734 1509 2946 5661 10970 21713 43891 89725 183161 369632 733386 1428444 2734087 5153866 9590111
|
||||
15 25 52 115 256 559 1173 2333 4373 7726 12917 20602 31835 49021 78509 136544 261287 534563 1117214 2299965 4564870
|
||||
7 27 76 181 394 805 1556 2856 4997 8371 13488 20995 31696 46573 66808 93806 129219 174971 233284 306705 398134
|
||||
8 17 43 101 206 373 617 953 1396 1961 2663 3517 4538 5741 7141 8753 10592 12673 15011 17621 20518
|
||||
@ -0,0 +1,3 @@
|
||||
0 3 6 9 12 15
|
||||
1 3 6 10 15 21
|
||||
10 13 16 21 30 45
|
||||
@ -0,0 +1,3 @@
|
||||
0 3 6 9 12 15
|
||||
1 3 6 10 15 21
|
||||
10 13 16 21 30 45
|
||||
@ -16,7 +16,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
|
||||
Box::new(day06::Day06 {}),
|
||||
Box::new(day07::Day07 {}),
|
||||
Box::new(day08::Day08 {}),
|
||||
// Box::new(day09::Day09 {}),
|
||||
Box::new(day09::Day09 {}),
|
||||
// Box::new(day10::Day10 {}),
|
||||
// Box::new(day11::Day11 {}),
|
||||
// Box::new(day12::Day12 {}),
|
||||
|
||||
@ -5,16 +5,18 @@ pub struct Day09 {}
|
||||
impl Solution for Day09 {
|
||||
fn part1(
|
||||
&self,
|
||||
_input: &mut Vec<String>,
|
||||
input: &mut Vec<String>,
|
||||
) -> Result<Box<dyn std::fmt::Display + Sync>, Box<dyn std::error::Error>> {
|
||||
Ok(Box::new("Ready"))
|
||||
let series_collection = self.get_series(input)?;
|
||||
Ok(Box::new(self.sum_extrapolated(&series_collection, true)?))
|
||||
}
|
||||
|
||||
fn part2(
|
||||
&self,
|
||||
_input: &mut Vec<String>,
|
||||
input: &mut Vec<String>,
|
||||
) -> Result<Box<dyn std::fmt::Display + Sync>, Box<dyn std::error::Error>> {
|
||||
Ok(Box::new("Ready"))
|
||||
let series_collection = self.get_series(input)?;
|
||||
Ok(Box::new(self.sum_extrapolated(&series_collection, false)?))
|
||||
}
|
||||
|
||||
fn get_day(&self) -> u8 {
|
||||
@ -22,7 +24,77 @@ impl Solution for Day09 {
|
||||
}
|
||||
}
|
||||
|
||||
impl Day09 {}
|
||||
impl Day09 {
|
||||
/// Takes a vec of strings and returns a Vec of series of numbers
|
||||
fn get_series(&self, input: &Vec<String>) -> Result<Vec<Vec<i32>>, Box<dyn std::error::Error>> {
|
||||
let mut series = vec![];
|
||||
for s in input.iter() {
|
||||
series.push(
|
||||
s.split_whitespace()
|
||||
.map(|n| n.parse::<i32>().unwrap())
|
||||
.collect(),
|
||||
);
|
||||
}
|
||||
Ok(series)
|
||||
}
|
||||
|
||||
/// Returns the sum ov extrapolated values either to the left or the right of the initial series
|
||||
fn sum_extrapolated(
|
||||
&self,
|
||||
series_collection: &Vec<Vec<i32>>,
|
||||
forwards: bool,
|
||||
) -> Result<i32, Box<dyn std::error::Error>> {
|
||||
let mut ans = 0i32;
|
||||
|
||||
for series in series_collection {
|
||||
let mut differences = vec![series.clone()];
|
||||
|
||||
// Keep finding differences until we have a consistent difference of 0
|
||||
while differences
|
||||
.last()
|
||||
.unwrap()
|
||||
.iter()
|
||||
.map(|v| v.abs())
|
||||
.sum::<i32>()
|
||||
!= 0i32
|
||||
{
|
||||
differences.push(
|
||||
differences
|
||||
.last()
|
||||
.unwrap()
|
||||
.windows(2)
|
||||
.map(|w| w[1] - w[0])
|
||||
.collect::<Vec<i32>>(),
|
||||
);
|
||||
}
|
||||
|
||||
if forwards {
|
||||
// Sum all of the last values in each row to get next num
|
||||
ans += differences
|
||||
.iter()
|
||||
.map(|s| *s.last().unwrap())
|
||||
.collect::<Vec<i32>>()
|
||||
.iter()
|
||||
.sum::<i32>();
|
||||
} else {
|
||||
// Scale backwards down the heap to find the previous number in each sequence
|
||||
let mut next = 0i32;
|
||||
differences
|
||||
.iter()
|
||||
.rev()
|
||||
.map(|s| *s.first().unwrap())
|
||||
.collect::<Vec<i32>>()
|
||||
.iter()
|
||||
.for_each(|v| {
|
||||
next = v - next;
|
||||
});
|
||||
ans += next;
|
||||
}
|
||||
}
|
||||
|
||||
Ok(ans)
|
||||
}
|
||||
}
|
||||
|
||||
/// Test from puzzle input
|
||||
#[cfg(test)]
|
||||
@ -44,7 +116,7 @@ mod test {
|
||||
.unwrap()
|
||||
.to_string();
|
||||
|
||||
assert_eq!(answer, "Ready");
|
||||
assert_eq!(answer, "114");
|
||||
}
|
||||
|
||||
#[test]
|
||||
@ -61,6 +133,6 @@ mod test {
|
||||
.unwrap()
|
||||
.to_string();
|
||||
|
||||
assert_eq!(answer, "Ready");
|
||||
assert_eq!(answer, "2");
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user