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#classfication

array

1, 4, 11, 15, 16, 18, 26, 27, 31, 33, 34, 35, 39, 40, 41, 42, 45, 48, 53, 54, 55, 56, 57, 59, 62, 63, 64, 66, 73, 74, 75, 78, 79, 80, 81, 84, 85, 88, 90, 105, 106, 118, 119, 120, 121, 122, 123, 126, 128, 152, 153, 154, 162, 163, 167, 169, 189, 209, 216, 217, 219, 228, 229, 238, 243, 245, 259, 268, 277, 280, 283, 287, 289, 370, 380, 381, 414, 442, 448, 457, 485, 495, 531, 532, 533, 548, 560, 561, 562, 565, 566, 581, 605, 611, 621, 624, 628, 643, 644, 661, 665, 667, 670, 674, 689, 695, 697, 713, 714, 717, 718, 719, 723, 724, 729, 747, 748, 756, 777, 779, 780, 790, 798, 808, 811, 852, 857, 861, 864, 870, 879, 898, 901, 905, 924, 927, 932, 936, 941, 943, 950, 951, 954, 958, 962, 978, 982, 987, 991, 1002, 1009, 1013, 1016, 1019, 1020, 1027, 1031, 1041, 1044, 1049, 1055, 1056, 1062, 1063, 1066, 1071, 1096, 1105, 1113, 1137, 1138, 1139, 1145

hash-table

1, 3, 18, 30, 36, 37, 49, 76, 85, 94, 136, 138, 149, 159, 166, 170, 187, 202, 204, 205, 217, 219, 242, 244, 246, 249, 266, 274, 288, 290, 299, 311, 314, 325, 336, 340, 347, 349, 350, 355, 356, 358, 359, 380, 381, 387, 389, 409, 438, 447, 451, 454, 463, 500, 508, 525, 535, 554, 560, 575, 594, 599, 609, 624, 632, 645, 648, 676, 690, 692, 694, 711, 718, 720, 726, 734, 739, 749, 762, 781, 782, 797, 816, 817, 829, 894, 920, 931, 966, 976, 990, 991, 994, 1001, 1006, 1010, 1016, 1023, 1029, 1034, 1043, 1044, 1122, 1129, 1147

linked-list

2, 19, 21, 23, 24, 25, 61, 82, 83, 86, 92, 109, 138, 141, 142, 143, 147, 148, 160, 203, 206, 234, 237, 328, 369, 379, 445, 725, 758, 766, 835, 838, 850, 908, 1072

math

2, 7, 8, 9, 12, 13, 29, 43, 50, 60, 65, 67, 69, 149, 166, 168, 171, 172, 202, 204, 223, 224, 231, 233, 246, 247, 248, 258, 263, 264, 268, 273, 279, 296, 313, 319, 326, 335, 343, 356, 357, 360, 365, 367, 368, 372, 396, 397, 400, 413, 423, 441, 453, 458, 462, 469, 483, 507, 517, 523, 535, 537, 553, 573, 592, 593, 598, 625, 628, 633, 634, 640, 645, 651, 660, 670, 672, 728, 754, 755, 790, 796, 797, 798, 805, 810, 818, 823, 828, 830, 856, 866, 888, 897, 899, 900, 909, 910, 915, 919, 921, 923, 927, 928, 935, 938, 942, 944, 946, 950, 963, 979, 986, 989, 1003, 1004, 1010, 1012, 1018, 1033, 1038, 1048, 1053, 1054, 1057, 1064, 1068, 1069, 1070, 1086, 1115, 1119, 1148

two-pointers

3, 11, 15, 16, 18, 19, 26, 27, 28, 30, 42, 61, 75, 76, 80, 86, 88, 125, 141, 142, 159, 167, 209, 234, 259, 283, 287, 344, 345, 349, 350, 360, 424, 457, 487, 524, 532, 567, 632, 713, 723, 768, 853, 855, 868, 874, 875, 917, 940, 959, 961, 966, 1019, 1028, 1034, 1046

string

3, 5, 6, 8, 10, 12, 13, 14, 17, 20, 22, 28, 30, 32, 38, 43, 44, 49, 58, 65, 67, 68, 71, 72, 76, 87, 91, 93, 97, 115, 125, 126, 151, 157, 158, 159, 161, 165, 186, 214, 227, 249, 271, 273, 293, 336, 340, 344, 345, 383, 385, 387, 408, 415, 434, 443, 459, 468, 520, 521, 522, 527, 536, 537, 539, 541, 544, 551, 553, 555, 556, 557, 564, 583, 591, 606, 609, 616, 632, 635, 647, 657, 678, 680, 681, 686, 696, 722, 730, 736, 742, 760, 763, 778, 781, 785, 804, 807, 818, 822, 827, 834, 837, 851, 858, 862, 872, 878, 886, 889, 926, 929, 935, 952, 953, 961, 965, 973, 974, 1006, 1045, 1060, 1065, 1075, 1080, 1146

sliding-window

3, 76, 159, 239, 340, 424, 480, 567, 727, 1020, 1034, 1037, 1046, 1113, 1138, 1145

binary-search

4, 29, 33, 34, 35, 50, 69, 74, 81, 153, 154, 162, 167, 174, 209, 222, 230, 240, 270, 275, 278, 287, 300, 302, 315, 327, 349, 350, 352, 354, 363, 367, 374, 378, 392, 410, 436, 441, 454, 475, 483, 493, 644, 658, 668, 718, 719, 745, 786, 788, 792, 794, 802, 809, 882, 892, 894, 907, 910, 912, 914, 923, 947, 963, 1023, 1056, 1059, 1066, 1122

divide-and-conquer

4, 23, 53, 169, 215, 218, 240, 241, 282, 312, 315, 327, 493, 514, 758, 939, 968, 1014

dynamic-programming

5, 10, 32, 44, 53, 62, 63, 64, 70, 72, 85, 87, 91, 95, 96, 97, 115, 120, 121, 123, 132, 139, 140, 152, 174, 188, 198, 213, 221, 256, 264, 265, 276, 279, 300, 303, 304, 309, 312, 321, 322, 338, 343, 351, 354, 357, 361, 363, 368, 375, 376, 377, 392, 403, 410, 413, 416, 418, 446, 464, 466, 467, 471, 472, 474, 486, 494, 514, 516, 517, 523, 546, 552, 568, 576, 600, 629, 638, 639, 646, 647, 650, 651, 656, 664, 673, 688, 689, 691, 698, 712, 714, 718, 727, 730, 740, 741, 747, 751, 769, 803, 806, 819, 826, 831, 836, 867, 868, 877, 902, 905, 909, 911, 923, 934, 938, 939, 956, 967, 972, 977, 980, 993, 1000, 1004, 1007, 1008, 1017, 1020, 1024, 1025, 1042, 1051, 1053, 1057, 1067, 1068, 1081, 1086, 1087, 1111, 1129, 1130, 1145

backtracking

10, 17, 22, 37, 39, 40, 44, 46, 47, 51, 52, 60, 77, 78, 79, 89, 90, 93, 126, 131, 140, 211, 212, 216, 254, 267, 291, 294, 306, 320, 351, 357, 401, 411, 425, 526, 691, 800, 872, 1022, 1038, 1067

stack

20, 42, 71, 84, 85, 94, 103, 144, 145, 150, 155, 173, 224, 225, 232, 255, 272, 316, 331, 341, 385, 394, 402, 439, 456, 496, 503, 591, 636, 682, 726, 735, 739, 781, 785, 874, 886, 916, 931, 937, 943, 957, 983, 1017, 1045, 1061, 1072, 1078, 1128

heap

23, 215, 218, 239, 253, 264, 295, 313, 347, 355, 358, 373, 378, 407, 451, 502, 659, 692, 719, 744, 761, 778, 789, 794, 802, 803, 836, 887, 895, 902, 918, 1014, 1127, 1140

greedy

44, 45, 55, 122, 134, 135, 253, 316, 321, 330, 358, 376, 392, 402, 406, 435, 452, 455, 484, 502, 621, 630, 649, 651, 659, 714, 738, 759, 761, 768, 770, 778, 872, 890, 891, 901, 906, 917, 946, 957, 963, 973, 981, 985, 992, 1026, 1033, 1037, 1047, 1049, 1051, 1052, 1053, 1095, 1127, 1139

sort

56, 57, 75, 147, 148, 164, 179, 220, 242, 252, 253, 274, 280, 296, 315, 324, 327, 349, 350, 493, 524, 527, 778, 883, 894, 958, 1009, 1014, 1018, 1052, 1094, 1140

bit-manipulation

78, 136, 137, 169, 187, 190, 191, 201, 231, 260, 268, 318, 320, 338, 342, 371, 389, 393, 397, 401, 405, 411, 421, 461, 476, 477, 693, 752, 757, 767, 800, 934

tree

94, 95, 96, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 110, 111, 112, 113, 114, 116, 117, 124, 129, 144, 145, 156, 173, 199, 222, 226, 230, 235, 236, 250, 255, 257, 270, 272, 285, 297, 298, 333, 337, 366, 404, 437, 449, 450, 501, 508, 509, 513, 515, 530, 536, 538, 543, 545, 549, 563, 572, 582, 606, 617, 623, 637, 652, 653, 654, 655, 662, 663, 666, 669, 671, 684, 685, 687, 743, 758, 764, 765, 771, 774, 775, 776, 783, 784, 791, 799, 832, 863, 893, 896, 904, 925, 930, 933, 955, 975, 988, 998, 1005, 1008, 1011, 1021, 1029, 1030, 1035, 1040, 1050, 1079, 1092, 1093

depth-first-search

98, 99, 100, 101, 104, 105, 106, 108, 109, 110, 111, 112, 113, 114, 116, 117, 124, 129, 130, 133, 199, 200, 207, 210, 257, 261, 301, 323, 329, 332, 337, 339, 364, 366, 394, 417, 439, 472, 473, 488, 490, 491, 494, 499, 505, 511, 513, 514, 515, 529, 531, 533, 542, 546, 547, 576, 638, 664, 679, 685, 690, 694, 695, 711, 721, 733, 737, 744, 750, 754, 757, 766, 774, 794, 801, 820, 854, 863, 865, 869, 871, 881, 893, 904, 922, 933, 960, 964, 971, 984, 999, 1008, 1011, 1021, 1022, 1030, 1058, 1073, 1092, 1093, 1104

breadth-first-search

101, 102, 103, 107, 111, 126, 127, 130, 133, 199, 200, 207, 210, 261, 279, 286, 301, 310, 317, 323, 407, 417, 490, 499, 505, 513, 515, 529, 542, 675, 690, 744, 753, 764, 774, 787, 801, 803, 833, 877, 884, 893, 895, 945, 949, 971, 1035, 1036, 1106

union-find

128, 130, 200, 261, 305, 323, 399, 547, 684, 685, 721, 737, 770, 794, 821, 869, 960, 964, 984, 989, 999, 1032, 1058

graph

133, 207, 210, 261, 269, 310, 323, 332, 399, 444, 511, 684, 685, 744, 770, 801, 820, 869, 871, 884, 964, 999, 1032, 1038, 1039, 1120, 1121

design

146, 155, 170, 173, 208, 211, 225, 232, 244, 251, 281, 284, 288, 295, 297, 341, 346, 348, 353, 355, 359, 362, 379, 380, 381, 432, 460, 588, 604, 631, 635, 642, 716, 816, 817, 838, 859, 860

topological-sort

207, 210, 269, 329, 444

trie

208, 211, 212, 336, 421, 425, 472, 642, 648, 676, 677, 692, 720, 746, 1075, 1080, 1097

binary-indexed-tree

218, 307, 308, 315, 327, 493

segment-tree

218, 307, 308, 315, 327, 493, 699, 715, 732, 880

line-sweep

218, 391, 880

ordered-map

220, 352, 683, 699, 715, 731, 732, 876, 885, 1017

recursion

247, 248, 544, 625, 687, 698, 726, 763, 791, 795, 799, 810, 930, 975

brainteaser

292, 319, 793, 1103

minimax

292, 294, 375, 464, 486, 873, 909, 949

memoization

329

queue

346, 353, 363, 582, 621, 859, 860, 892, 969

reservoir-sampling

382, 398

geometry

587, 928, 1003

random

894, 903, 912, 913, 914, 915

rejection-sampling

903, 915

binary-search-tree

1114

Name		Name	Last commit message	Last commit date
Latest commit History 23 Commits
.gitignore		.gitignore
1.two-sum.ts		1.two-sum.ts
100.same-tree.ts		100.same-tree.ts
101.symmetric-tree.ts		101.symmetric-tree.ts
104.maximum-depth-of-binary-tree.ts		104.maximum-depth-of-binary-tree.ts
108.convert-sorted-array-to-binary-search-tree.ts		108.convert-sorted-array-to-binary-search-tree.ts
110.balanced-binary-tree.ts		110.balanced-binary-tree.ts
111.minimum-depth-of-binary-tree.ts		111.minimum-depth-of-binary-tree.ts
112.path-sum.ts		112.path-sum.ts
118.pascals-triangle.ts		118.pascals-triangle.ts
119.pascals-triangle-ii.ts		119.pascals-triangle-ii.ts
121.best-time-to-buy-and-sell-stock.ts		121.best-time-to-buy-and-sell-stock.ts
125.valid-palindrome.ts		125.valid-palindrome.ts
13.roman-to-integer.ts		13.roman-to-integer.ts
136.single-number.ts		136.single-number.ts
14.longest-common-prefix.ts		14.longest-common-prefix.ts
141.linked-list-cycle.ts		141.linked-list-cycle.ts
144.binary-tree-preorder-traversal.ts		144.binary-tree-preorder-traversal.ts
145.binary-tree-postorder-traversal.ts		145.binary-tree-postorder-traversal.ts
160.intersection-of-two-linked-lists.ts		160.intersection-of-two-linked-lists.ts
168.excel-sheet-column-title.ts		168.excel-sheet-column-title.ts
169.majority-element.ts		169.majority-element.ts
171.excel-sheet-column-number.ts		171.excel-sheet-column-number.ts
175.combine-two-tables.ts		175.combine-two-tables.ts
181.employees-earning-more-than-their-managers.ts		181.employees-earning-more-than-their-managers.ts
190.reverse-bits.ts		190.reverse-bits.ts
191.number-of-1-bits.ts		191.number-of-1-bits.ts
193.valid-phone-numbers.ts		193.valid-phone-numbers.ts
20.valid-parentheses.ts		20.valid-parentheses.ts
202.happy-number.ts		202.happy-number.ts
203.remove-linked-list-elements.ts		203.remove-linked-list-elements.ts
205.isomorphic-strings.ts		205.isomorphic-strings.ts
206.reverse-linked-list.ts		206.reverse-linked-list.ts
21.merge-two-sorted-lists.ts		21.merge-two-sorted-lists.ts
219.contains-duplicate-ii.ts		219.contains-duplicate-ii.ts
26.remove-duplicates-from-sorted-array.ts		26.remove-duplicates-from-sorted-array.ts
27.remove-element.ts		27.remove-element.ts
35.search-insert-position.ts		35.search-insert-position.ts
392.is-subsequence.ts		392.is-subsequence.ts
58.length-of-last-word.ts		58.length-of-last-word.ts
66.plus-one.ts		66.plus-one.ts
67.add-binary.ts		67.add-binary.ts
69.sqrt-x.ts		69.sqrt-x.ts
70.climbing-stairs.ts		70.climbing-stairs.ts
83.remove-duplicates-from-sorted-list.ts		83.remove-duplicates-from-sorted-list.ts
88.merge-sorted-array.ts		88.merge-sorted-array.ts
9.palindrome-number.ts		9.palindrome-number.ts
94.binary-tree-inorder-traversal.ts		94.binary-tree-inorder-traversal.ts
README.md		README.md
doClassfication.js		doClassfication.js
package-lock.json		package-lock.json
package.json		package.json
tsconfig.json		tsconfig.json
type.d.ts		type.d.ts

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