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前言
十月份共有60道题目，全部属于 Easy 难度的，所以公众号中分享出来的并不多，只是挑了一些感觉还可以的才分享了出来，这60道题目我按照不同类别进行了分类整理，所有源码以及对应的解题思路均匀开源到 GitHub，公众号内回复“LeetCode”获取，具体题目如下。
题目分类
数组
- 0001_two_sum
- 0026_remove_duplicates_from_sorted_array
- 0027_remove_element
- 0035_search_insert_position
- 0045_jump_game_II
- 0053_maximum_subarray
- 0055_jump_game
- 0066_plus_one
- 0088_merge_sorted_array
- 0106_binary_tree_postorder_traversal
- 0118_pascals_triangle
- 0119_pascals_triangle_ii
- 0121_best_time_to_buy_and_sell_stock
- 0122_best_time_to_buy_and_sell_stock_ii
- 0167_two_sum_ii
- 0169_majority_element
- 0189_rotate_array
- 0217_contains_duplicate
- 0219_contains_duplicate_ii
宽度优先搜索
- 0101_symmetric_tree
- 0107_binary_tree_level_order_traversal_ii
- 0111_minimum_depth_of_binary_tree
位运算
- 0136_single_number
- 0169_majority_element
- 0190_reverse_bits
- 0191_number_of_1_bits
- 0231_power_of_two
二分查找
- 0035_search_insert_position
- 0069_sqrtx
- 0167_two_sum_ii
- 0222_count_complete_tree_nodes
- 0300_longest_increasing_subsequence
分治法
- 0053_maximum_subarray
- 0169_majority_element
设计
- 0155_min_stack
- 0225_implement_stack_using_queues
- 0232_implement_queue_using_stacks
深度优先搜索
- 0100_same_tree
- 0101_symmetric_tree
- 0104_maximum_depth_of_binary_tree
- 0106_binary_tree_postorder_traversal
- 0108_convert_sorted_array_to_binary_search_tree
- 0110_balanced_binary_tree
- 0111_minimum_depth_of_binary_tree
- 0112_path_sum
动态规划
- 0053_maximum_subarray
- 0070_climbing_stairs
- 0121_best_time_to_buy_and_sell_stock
- 0198_house_robber
- 0300_longest_increasing_subsequence
贪心法
- 0045_jump_game_II
- 0055_jump_game
- 0122_best_time_to_buy_and_sell_stock_ii
哈希表
- 0001_two_sum
- 0136_single_number
- 0149_max_points_on_a_line
- 0202_happy_numbers
- 0204_count_primes
- 0205_isomorphic_strings
- 0217_contains_duplicate
- 0219_contains_duplicate_ii
链表
- 0021_merge_two_sorted_lists
- 0083_remove_duplicates_from_sorted_list
- 0141_linked_list_cycle
- 0147_insertion_sort_list
- 0160_intersection_of_two_linked_lists
- 0203_remove_linked_list_elements
- 0206_reverse_linked_list
- 0234_palindrome_linked_list
- 0237_delete_node_in_a_linked_list
数学
- 0007_reverse_integer
- 0009_palindrome_number
- 0013_roman_to_integer
- 0067_add_binary
- 0069_sqrtx
- 0149_max_points_on_a_line
- 0168_excel_sheet_column_title
- 0172_factorial_trailling_zeros
- 0202_happy_numbers
- 0204_count_primes
- 0231_power_of_two
栈
- 0020_valid_parentheses
- 0144_binary_tree_preorder_traversal
- 0150_evaluate_reverse_polish_notation
- 0155_min_stack
- 0225_implement_stack_using_queues
- 0232_implement_queue_using_stacks
字符串
- 0013_roman_to_integer
- 0014_longest_common_prefix
- 0020_valid_parentheses
- 0028_implement_strstr
- 0038_count_and_say
- 0058_length_of_last_word
- 0067_add_binary
- 0125_valid_palindrome
双指针
- 0026_remove_duplicates_from_sorted_array
- 0027_remove_element
- 0028_implement_strstr
- 0088_merge_sorted_array
- 0125_valid_palindrome
- 0141_linked_list_cycle
- 0167_two_sum_ii
- 0234_palindrome_linked_list
树
- 0100_same_tree
- 0101_symmetric_tree
- 0104_maximum_depth_of_binary_tree
- 0106_binary_tree_postorder_traversal
- 0107_binary_tree_level_order_traversal_ii
- 0108_convert_sorted_array_to_binary_search_tree
- 0110_balanced_binary_tree
- 0111_minimum_depth_of_binary_tree
- 0112_path_sum
- 0144_binary_tree_preorder_traversal
- 0222_count_complete_tree_nodes
- 0226_invert_binary_tree
- 0235_lowest_common_ancestor_of_a_binary_search_tree
- 0617_merge_two_binary_trees