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Directories ¶

Path	Synopsis
airbnb
125_valid_palindrome
212_word_search_ii/trieandbacktracking
216_combination_sum_iii/backtracking
21_merge_two_sorted_lists/iterative
21_merge_two_sorted_lists/recursive
236_lowest_common_ancestor_of_a_binary_tree/recursive
236_lowest_common_ancestor_of_a_binary_tree/recursivecomplex
251_flatten_2d_vector/quickconstructor
251_flatten_2d_vector/quickhasnext
269_alien_dictionary/bfstopologicalsort
269_alien_dictionary/dfstopologicalsort
295_find_median_from_data_stream/twoheap
2_add_two_numbers/iterative
2_add_two_numbers/recursive
300_longest_increasing_subsequence/dp
300_longest_increasing_subsequence/dpandbinarysearch
324_wiggle_sort_ii/sortandarray
324_wiggle_sort_ii/threewaypartition1
336_palindrome_pairs/hasmapandprefix
336_palindrome_pairs/trie
341_flatten_nested_list_iterator/stack
377_combination_sum_iv/dp
39_combination_sum/backtracking
39_combination_sum/backtrackingpreferred
40_combination_sum_ii/backtracking
41_first_missing_positive/constantspace
42_trapping_rain_water/dp
42_trapping_rain_water/stack
42_trapping_rain_water/twopointer
5_longest_palindromic_substring/dpfromendtostart
5_longest_palindromic_substring/dpfromstarttoend
5_longest_palindromic_substring/twopointer
622_design_circular_queue/naiveinit
622_design_circular_queue/smartinit
751_ip_to_cidr/iterativeandgreedy
751_ip_to_cidr/withoutlibfunction
755_pour_water/vn
755_pour_water/vnclear
756_pyramid_transition_matrix/backtracking
759_employee_free_time/priorityqueue
773_sliding_puzzle/bfs
773_sliding_puzzle/bfsstring
787_cheapest_flights_within_k_stops/bellmenford
79_word_search/dfs
79_word_search/dfsmorecall
7_reverse_integer/linear
815_bus_routes/bfs
829_consecutive_numbers_sum/math
829_consecutive_numbers_sum/math1
amazon
138_copy_list_with_random_pointer/constantspace
138_copy_list_with_random_pointer/dfs
138_copy_list_with_random_pointer/iterative
141_linked_list_cycle/constactspace
160_intersection_of_two_linked_lists/twopointerandconstspace
189_rotate_array/extraspace
189_rotate_array/inplace
204_count_prime/best_solution
204_count_prime/second_best
234_palindrome_linked_list/inplace
234_palindrome_linked_list/nspace
242_valid_anagram/map
6_zigzag_conversion/rearrageandscan
6_zigzag_conversion/scaninroworder
73_set_matrix_zeroes/inplace
78_subsets/better
78_subsets/bottomup
89_gray_code/generatelevelbylevel
90_subset_ii/backtracking
doordash
562_longest_line_of_consecutive_one_in_matrix/dp
695_max_area_of_island/dfs
695_max_area_of_island/dfsnoextramap
986_interval_list_intersections/mergesortclean
986_interval_list_intersections/straightforward
browser_history
nary_tree_level_order_traversal/queue
sort_array_in_0_to_200/extraarray
valid_pick_up_and_delivery
facebook
128_longest_consecutive_sequence/map
128_longest_consecutive_sequence/unionfind
14_longest_common_prefix/horizontalscanning
14_longest_common_prefix/verticalscanning
153_find_minimum_in_rotated_sorted_array/binarysearch
247_strobogrammatic_number_ii/bottomup
247_strobogrammatic_number_ii/topdown
248_strobogrammatic_number_iii/dp
252_meeting_room/sort
253_meeting_room_ii/sort
286_walls_and_gates/bfs
301_remove_invalid_parentheses/backtacking
32_longest_valid_parentheses/dp
32_longest_valid_parentheses/leftandrightscan
32_longest_valid_parentheses/stack
334_increasing_triplet_subsequence/constantmemo
34_find_first_and_last_position_of_element_in_sorted_array/twobinarysearch
3_longest_substring_without_repeating_characters/slidingwindow
3_longest_substring_without_repeating_characters/slidingwindowbetter
88_merge_sorted_array/twopointersfromend
9_palindrome_number/halfint
9_palindrome_number/int
google
1000_minimum_cost_to_merge_stones/2ddp
1000_minimum_cost_to_merge_stones/3ddp
131_palindrome_partitioning/backtracking
131_palindrome_partitioning/backtrackingwithmemo
132_palindrome_partitioning_ii/dp
134_gas_station/onepass
135_candy/bruteforce
135_candy/onepassandconstspace
135_candy/twopass
139_word_break/dfswithmemo
139_word_break/dp
140_word_break_ii/dfsandmemo
140_word_break_ii/dp
157_read_n_characters_given_read4/linear
158_read_n_characters_given_read_4_ii_call_multiple_times/globalbuffer
159_longest_substring_with_at_most_two_distinct_characters/slidingwindow
221_maximal_square/dp
223_rectangle_area/overlap
240_search_a_2d_matrix_ii/topright
246_strobogrammatic_number/twopointer
289_game_of_life/inplace
290_word_pattern/twomap
298_binary_tree_longest_consecutive_sequence/dfsandbottomup
298_binary_tree_longest_consecutive_sequence/dfsandtopdown
299_bulls_and_cows/twopass
299_bulls_and_cows/twppassii
308_range_sum_query_2d_mutable/bineryindextree
30_substring_with_concatenation_of_all_words/map
30_substring_with_concatenation_of_all_words/slidingwindow
312_burst_balloons/dp
315_count_of_smaller_numbers_after_self/binaryindextree
315_count_of_smaller_numbers_after_self/bst
316_remove_duplicate_letters/stackandgreedy
327_count_of_range_sum/binaryindextree
327_count_of_range_sum/mergesort
327_count_of_range_sum/prefixsum
329_longest_increasing_path_in_a_matrix/dfsandmemo
354_russian_doll_envelopes/dp
354_russian_doll_envelopes/dpandbinarysearch
387_first_unique_character_in_a_string/twopass
394_decode_string/iterativeandstack
394_decode_string/recursive
406_queue_reconstruction_by_height/smalltolarge
410_split_array_largest_sum/binarysearch
410_split_array_largest_sum/dp
415_add_strings/positionbypositionfromback
422_valid_word_square/constspace
422_valid_word_square/twoforloop
425_word_squares/dfsandtrie
44_wildcard_matching/dp
471_encode_string_with_shortest_length/dp
488_zuma_game/backtackingbutwrong
489_robot_room_cleaner/dfs
493_reverse_pairs/mergesort
4_median_of_two_sorted_arrays/binarysearch
505_maze_ii/dfs
505_maze_ii/dijkstra
527_word_abbreviation/greedyandexpandprefix
564_find_the_closest_palindrome/stringprocess
659_split_array_into_consecutive_subsequence/greedy
74_search_a_2d_matrix/binarysearch1d
74_search_a_2d_matrix/binarysearch2d
753_cracking_the_safe/eularpath
753_cracking_the_safe/hamiltonianpath
761_special_binary_string/recursive
772_basic_calculator_iii/recursive
774_minimize_max_distance_to_gas_station/binarysearch
774_minimize_max_distance_to_gas_station/heap
777_swap_adjacent_in_LR_string/conditioncheck
777_swap_adjacent_in_LR_string/twopointer
794_valid_tic_tac_tow_state/solution
811_subdomain_visit_count/map
812_largest_triangle_area/bruteforce
833_find_and_replace_in_string/map
837_new_21_game/dpandslidingwindow
840_magic_squares_in_grid/bruteforce
843_guess_the_word/heuristic
84_largest_rectangle_in_histogram/squaretime
84_largest_rectangle_in_histogram/stackandlinear
850_rectangle_area_ii/linesweep
857_minimum_cost_to_hire_k_workers/priorityqueue
85_maximum_rectangle/dp
85_maximum_rectangle/histogramseveryposition
85_maximum_rectangle/maxrectanglehistogram
914_x_of_a_kind_in_a_deck_of_cards/gcd
920_number_of_music_playlist/dp
929_unique_email_address/lib
929_unique_email_address/loop
935_knight_dialer/dp
939_minimum_area_rectangle/sortanddiagonal
943_find_the_shortest_superstring/dfsandbacktracking
963_minimum_area_rectangle_ii
975_odd_even_jump/dp
975_odd_even_jump/dpandmonotonicstack
houzz
10_regular_expression_matching/dpiterative
10_regular_expression_matching/dprecursive
10_regular_expression_matching/recursive
121_best_time_to_buy_and_sell_stock/linear
122_best_time_to_buy_and_sell_stock_ii/greedy
123_best_time_to_buy_and_sell_stock_iii/dpandtwopass
123_best_time_to_buy_and_sell_stock_iii/onepassandnoextraspace
146_lru_cache/hasmapanddoublelinkedlist
162_find_peak_elements/binarysearch
162_find_peak_elements/linear
174_dungeon_game/dp
188_best_time_to_buy_and_sell_stock_iv/dp
200_number_of_islands/dfs
224_basic_calculator/interative
224_basic_calculator/recursive
227_2_base_calculator_ii_with_float/onestack
227_basic_calculator_ii/onestack
227_basic_calculator_ii/twostack
304_range_sum_query_2d_immutable/prefixsum
31_next_permutation/linear
33_search_in_rotated_sorted_array/binarysearch
43_multiply_strings/byposition
48_rotate_image/onepass
48_rotate_image/transposeandreverserow
655_print_binary_tree/dfs
65_valid_number/ifelse
660_remove_9/base9
727_minimum_window_subsequence/dp
785_is_graph_bipartite/bfs
785_is_graph_bipartite/bfsii
785_is_graph_bipartite/dfs
byte_array_combination/online
restore_array_order/bruteforce
sqrt_of_float/byposition
sqrt_of_float/deltamove
string_to_binary_tree/recursive
zigzag_matrix
linkedin
126_word_ladder_ii/bfsanddfs
126_word_ladder_ii/bfsanddfsreverse
127_word_ladder/bfs
127_word_ladder/bidirectionalbfs
149_max_points_on_a_line/easyslope
149_max_points_on_a_line/slopenoprecisionloss
150_evaluate_reverse_polish_notation/stack
156_binary_tree_upside_down/iterative
156_binary_tree_upside_down/recursive
187_repeated_dna_sequences/bitmanipulation
187_repeated_dna_sequences/map
205_isomorphic_strings/map1
205_isomorphic_strings/twomap
20_valid_parentheses/stack
243_shortest_word_distance/linear
244_shortest_word_distance_ii/goodconstructorgoodshortest
245_shortest_word_distance_iii/linear
254_factor_combinations/backtracking
270_closest_binary_search_tree_value/dfs
272_closest_binary_search_tree_value_ii/convlist
272_closest_binary_search_tree_value_ii/twostack
273_integer_to_english_words/threedigitgroup
277_find_the_celebrity/twopass
322_coin_change/dp
339_nested_list_weight_sum/bfs
339_nested_list_weight_sum/dfs
33_search_in_rotated_sorted_array/binarysearcheasytounderstand
33_search_in_rotated_sorted_array/binarysearchwithoutconsolidation
33_search_in_rotated_sorted_array/infvalue
33_search_in_rotated_sorted_array/modifiedbinarysearch
364_nested_list_weight_sum_ii/dfstwopass
364_nested_list_weight_sum_ii/onepass
366_find_leaves_of_binary_tree/dfs
384_shuffle_an_array/knuthshuffle
432_all_o_one_data_structure/doubledlinkedlist
516_longest_palindromic_subsequence/dp
528_random_pick_with_weight/binarysearch
605_can_place_flowers/linear
636_exclusive_time_of_functions/stack
636_exclusive_time_of_functions/stackii
671_second_minimum_node_in_a_binary_tree/helperrecursive
671_second_minimum_node_in_a_binary_tree/selfrecursive
68_text_justification/linear
698_partition_to_k_equal_sum_subsets/dfs
706_design_hashmap/separatechaining
715_range_module/sortedrange
716_max_stack/twostack
72_edit_distance/dp
81_search_in_rotated_sorted_array_ii/binarysearch
models
pocketgem
133_clone_graph/dfs
404_sum_of_left_leaves/recursive
ternary_tree_conversion
purestorage
12_roman_to_integer/linear
202_happy_number/cycledetection
202_happy_number/map
203_remove_linked_list_elements/iterative
203_remove_linked_list_elements/recursive
206_reverse_linked_list/iterative
206_reverse_linked_list/recursive
593_valid_square/checkalldistance
593_valid_square/sort
647_palindromic_substrings/dp
647_palindromic_substrings/pivotalletter
661_image_smoother/newarray
661_image_smoother/reusearray
730_count_different_palindromic_subsequences/dpandpreprocessnextposition
730_count_different_palindromic_subsequences/dpandtwopointer
75_sort_colors/onepass
75_sort_colors/twopass
buddy_system/solution1
draw_circle/alloncircle
draw_circle/notexactlyoncircle
fire_events/nolock
fire_events/thread
o_one_set/versionnumber
quip
54_spiral_matrix/layer
720_longest_word_in_dictionary/map
740_delete_and_earn/dp
855_exam_room/sortarray
fibonacci_number_three
next_greater_element_in_bst
num_of_path_in_matrix/dfs
num_of_path_in_matrix/dp
reverse_string
serialize_dictionary
sorted_circular_linked_list
spiral_matrix_inside_out
strings_only_in_one_list
uber
255_verify_preorder_sequence_in_binary_search_tree/noextraspace
255_verify_preorder_sequence_in_binary_search_tree/recursive
255_verify_preorder_sequence_in_binary_search_tree/stackandlinear
279_perfect_square/dp
291_word_pattern_ii/onemapandbacktracking
291_word_pattern_ii/twomapandbacktracking
332_reconstruct_itinerary/hierholzers
346_moving_average_from_data_stream/circulararray
353_design_snake_game/dequeandmap
359_logger_rate_limiter/circulararray
359_logger_rate_limiter/map
361_bomb_enemy/memorize
362_design_hit_counter/circulararray
362_design_hit_counter/queue
36_valid_sudoku/stringencoding
465_optimal_account_balancing/dfs
490_the_maze/bfs
490_the_maze/dfs
49_group_anagram/nosort
535_encode_and_decode_tinyurl/base62andincrementalid
542_01_matrix/2passdp
658_find_k_closest_elements/bianrysearchandtwopointer
679_24_game/backtracking
780_reaching_points/searchbackward
780_reaching_points/searchbackwardoptimization

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