Files

001_two_sum
002_add_two_numbers
003_longest_substring_without_repeating_chars
004_median_of_2_sorted_arrays
005_longest_palindromic_substring
006_zigzag_conversion
007_reverse_integer
008_string_to_integer
009_palindrome_number
010_regular_expression_matching
011_container_with_most_water
012_integer_to_roman
013_roman_to_integer
014_longest_common_prefix
015_three_sum
016_three_sum_closest
017_letter_combinations_of_phone_number
018_four_sum
019_remove_nth_node_from_end
020_valid_parentheses
021_merge_2_sorted_lists
022_generate_parentheses
023_merge_k_sorted_lists
024_swap_nodes_in pairs
025_reverse_nodes_in_k_group
026_remove_duplicates_from_sorted_array
027_remove_element
028_implement_strstr
029_divide_2integers
030_substring_with_cancatenation_all_words
031_next_permutation
032_longest_valid_parentheses
033_search_in_rotated_sorted_array
034_search_for_a_range
035_search_insert_position
036_valid_sudoku
037_sodoku_solver
038_count_and_say
039_combination_sum
040_combination_sum_ii
041_first_missing_positive
042_trapping_rain_water
043_multiply_strings
044_wildcard_matching
045_jump_game_ii
046_permutations
047_permutations_ii
048_rotate_image
049_group_anagrams
050_pow_x_n
051_n_queens
052_n_queens_ii
053_maximum_subarray
054_spiral_matrix
055_jump_game
056_merge_intervals
057_insert_interval
058_length_of_last_word
059_spiral_matrix_ii
060_permutation_sequence
061_rotate_list
062_unique_paths
063_unique_paths_ii
064_minimum_path_sum
065_valid_number
066_plus_one
067_add_binary
068_text_justification
069_sqrt_x
070_climbing_stairs
071_simplify_path
072_edit_distance
073_set_matrix_zeros
074_search_2d_matrix
075_sort_colors
076_min_window_substring
077_combinations
078_subsets
079_word_search
080_reemove_duplicates_from_sorted_array_ii
081_search_in_rotated_sorted_array
082_remove_duplicates_from_sorted_list
083_remove_duplicates_from_sorted_list_ii
084_largest_rectangle_in_histogram
085_maximal_rectangle
086_partition_list
087_scramble_string
088_merge_sorted_arry
089_gray_code
- README.md
- gray_code.py
090_subsets_ii
091_decode_ways
092_reversed_linked_list_ii
093_restore_ip_addresses
094_binary_tree_inorder
095_unique_binary_search_trees_ii
096_unique_binary_search_trees
097_interleaving_string
098_validate_binary_search_tree
099_recover_binary_search_tree
100_same_tree
101_symmetric_tree
102_binary_tree_level_order_traversal
103_binary_tree_zigzag_level_order_traversal
104_max_depth_of_binary_tree
105_construct_bt_from_preorder_inorder
106_construct_bt_from_postorder_inorder
107_binary_tree_level_order_traversal_ii
108_sorted_array_to_bst
109_convert_sorted_list_to_BST
110_balanced_binary_treee
111_minimum_depth_of_bst
112_path_sum
113_path_sum_ii
114_flatten_binary_tree_to_linked_list
115_distinct_subsequences
116_populating_next_right_pointers_in_each_node
117_populating_next_right_pointers_in_each_node_ii
118_pascal_triangle
119_pascal_triangle_ii
120_triangle
121_best_time_to_buy_and_sell
122_best_time_to_buy_adn_sell_ii
124_binary_tree_max_path_sum
125_valid_palindrome
126_word_ladder_ii
127_word_ladder
128_longest_consequetive_sequence
129_sum_root_to_leaf
130_surrounded_regions
131_palindrome_partitioning
132_palindrome_partitioning_ii
133_clone_graph
134_gas_station
135_candies
136_single_number
137_single_number_ii
138_copy_list_with_random_pointer
139_word_break
140_word_break_ii
141_linked_list_cycle
142_linked_list_cycle_ii
143_reorder_list
144_binary_tree_preorder_traversal
145_binary_tree_postorder_traversal
146_lru_cache
147_insertion_sort_list
148_sort_list
149_max_points_on_a_line
150_evaluate_reverse_polish
151_reverse_words_in_a_string
152_maximum_products_subarray
153_find_minimum_rotated_sorted_array
154_find_minimum_in_rotated_array_ii
155_min_stack
156_binary_tree_upside_down
157_read_n_chars
158_read_n_chars_ii
159_longest_substring_with_at_most_2_chars
160_intersection_of_linked_lists
161_one_edit_distance
162_peak_element
163_find_missing_ranges
164_maximum_gap
165_compare_version_numbers
166_fraction_to_recurring_decimal
167_two_sum_ii
168_excel_sheet
169_majority_element
170_two_sum_iii
171_excel_sheet_column_number
172_factorial_trailing_zeros
173_binary_tree_iterator
174_dungeon_game
179_largest_number
186_reverse_words_in_a_string
187_repeated_dna
188_best_time_to_buy_and_sell_iv
189_rotate_array
190_reverse_bits
191_number_of_i_bits
198_house_robber
199_binary_tree_right_view
200_islands
201_bitwise_and_of_number_range
202_happy_number
203_remove_linked_list_elements
204_count_primes
205_isomorphic_strings
206_reverse_linked_list
207_course_schedule
208_implement_trie
209_minium_size_subarray_sum
210_course_schedule_ii
211_add_and_search_word
212_word_search_ii
213_house_robber_ii
215_kth_element_in_array
216_combination_sum_iii
217_contains_duplicate
218_skyline_problem
219_contains_duplicate_ii
220_contains_duplicate_iii
221_maximal_square
222_count_complete_tree_nodes
223_rectangle_area
224_basic_calculator
225_impl_stack_using_queues
226_invert_binary_tree
227_basic_calculator_ii
228_summary_ranges
229_majority_element_ii
230_kth_smallest_element
231_power_of_two
232_make_queue_using_stacks
233_number_of_digit_one
234_palindrome_linked_list
235_lowst_common_ancestor_bst
236_lowest_common_ancestor
237_delete_node_in_linked_list
238_product_array
239_sliding_window_maximum
240_search_2d_matrix
241_different_ways_to_add_parenthesis
242_valid_anagram
243_shortest_word_distance
244_shortest_word_distance_ii
245_shortest_word_distance_iii
246_strobogrammatic_number
247_strobogrammatic_number_ii
248_strobogrammatic_number_iii
249_group_shifted_strings
250_count_univalue_subtrees
251_flatten_2d_vector
252_meeting_rooms
253_meeting_room_ii
254_factor_combinations
255_verify_preorder_sequence
256_paint_house
257_binary_tree_paths
258_add_digits
259_threesum_smaller
260_single_number_iii
261_graph_valid_tree
263_ugly_number
264_ugly_number_ii
265_paint_house_ii
266_palindrome_permutation
267_palindrome_permutation_ii
268_missing_number
269_alien_dictionary
270_closest_binary_search_tree_value
271_encode_and_decode_strings
272_closest_binary_search_tree_values
273_english_words
274_h_index
275_hindex_ii
276_paint_fence
277_find_the_celebrity
278_first_bad_version
279_perfect_square_numbers
280_wiggle_sort
281_zigzag_iterator
282_expression_add_operators
283_move_zeros
284_peeking_iterator
285_inorder_successor_in_BST
286_walls_and_gates
287_finding_duplicate_number
288_unique_word_abbrevation
289_game_of_life
290_word_pattern
291_word_pattern_ii
292_nim_game
293_flip_game
294_flip_game_ii
295_find_median_from_data_stream
296_best_meeting_point
297_serialize_and_deserialize_binary_tree
298_binary_tree_longest_sequence
299_bulls_and_cows
300_longest_increasing_subsequence
302_smallest_rectangle_enclosing_pixels
303_range_sum_query_imutable
304_range_sum_query_2d
305_number_of_islands_ii
306_additive_number
307_range_sum_query_mutable
309_best_time_to_buy_cooldown
310_minimum_height_trees
311_sparse_matrix_multiplication
312_burst_balloons
313_super_ugly_number
314_binary_tree_vertical_order_traversal
315_count_of_smaller_numbers
316_remove_duplicate_letters
317_shortest_distance_from_all_buildings
318_maximum_product_of_word_lengths
319_bulb_switcher
320_generalized_abbreviation
321_create_maximum_number
322_coin_change
323_number_of_connected_components
324_wiggle_sort_ii
325_maximum_size_subarray
326_power_of_three
327_count_of_range_sum
328_odd_even_linked_list
329_longest_increasing_path
330_patching_array
332_reconstruct_itinerary
333_largest_BST_subtree
335_self_crossing
336_palindrome_pairs
337_house_robber_iii
338_counting_bits
339_nested_list_weighted_sum
340_longest_substr_at_most_k_chars
341_flatten_nested_list_iterator
342_power_of_four
343_integer_break
344_reverse_string
345_reverse_vowels
347_top_k_frequent_elements
352_data_stream_disjoint_intervals
030_substr
331_verify_preorder_serialization
334-increasing_triplet_subsequences
README.md
customersNeverOrder.sql
duplicateEmails.sql
isomorphic_strings.pyc
secondHighestSalary.sql

089_gray_code

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How to flip a single bit in a num?

num = num^(1<<i)

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