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+ | 0191 |[ Number of 1 Bits] ( LeetCodeNet/G0101_0200/S0191_number_of_1_bits/Solution.cs ) | Easy | Top_Interview_Questions, Bit_Manipulation | 0 | 100.00
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#### Day 3 Conditional Statements
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+ | 0202 |[ Happy Number] ( LeetCodeNet/G0201_0300/S0202_happy_number/Solution.cs ) | Easy | Top_Interview_Questions, Hash_Table, Math, Two_Pointers | 0 | 100.00
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#### Day 5 Function
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+ | 0205 |[ Isomorphic Strings] ( LeetCodeNet/G0201_0300/S0205_isomorphic_strings/Solution.cs ) | Easy | String, Hash_Table | 2 | 90.78
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#### Day 3 Linked List
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+ | 0202 |[ Happy Number] ( LeetCodeNet/G0201_0300/S0202_happy_number/Solution.cs ) | Easy | Top_Interview_Questions, Hash_Table, Math, Two_Pointers | 0 | 100.00
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| 0054 |[ Spiral Matrix] ( LeetCodeNet/G0001_0100/S0054_spiral_matrix/Solution.cs ) | Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Matrix, Simulation | 0 | 100.00
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#### Day 2 String
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+ | 0210 |[ Course Schedule II] ( LeetCodeNet/G0201_0300/S0210_course_schedule_ii/Solution.cs ) | Medium | Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Graph, Topological_Sort | 4 | 91.35
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#### Day 12 Dynamic Programming
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@@ -520,6 +525,7 @@ C#-based LeetCode algorithm problem solutions, regularly updated.
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| 0100 |[ Same Tree] ( LeetCodeNet/G0001_0100/S0100_same_tree/Solution.cs ) | Easy | Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree | 0 | 100.00
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| 0101 |[ Symmetric Tree] ( LeetCodeNet/G0101_0200/S0101_symmetric_tree/Solution.cs ) | Easy | Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_ Space_O(log(N)) | 0 | 100.00
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+ | 0199 |[ Binary Tree Right Side View] ( LeetCodeNet/G0101_0200/S0199_binary_tree_right_side_view/Solution.cs ) | Medium | Top_100_Liked_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, LeetCode_75_Binary_Tree/BFS | 0 | 100.00
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#### Day 16 Design
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+ | 0191 |[ Number of 1 Bits] ( LeetCodeNet/G0101_0200/S0191_number_of_1_bits/Solution.cs ) | Easy | Top_Interview_Questions, Bit_Manipulation | 0 | 100.00
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| 0190 |[ Reverse Bits] ( LeetCodeNet/G0101_0200/S0190_reverse_bits/Solution.cs ) | Easy | Top_Interview_Questions, Bit_Manipulation, Divide_and_Conquer | 18 | 93.43
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| 0338 |[ Counting Bits] ( LeetCodeNet/G0301_0400/S0338_counting_bits/Solution.cs ) | Easy | Dynamic_Programming, Bit_Manipulation, LeetCode_75_Bit_Manipulation, Big_O_Time_O(num)_ Space_O(num) | 0 | 100.00
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+ | 0209 |[ Minimum Size Subarray Sum] ( LeetCodeNet/G0201_0300/S0209_minimum_size_subarray_sum/Solution.cs ) | Medium | Array, Binary_Search, Prefix_Sum, Sliding_Window | 0 | 100.00
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| 0003 |[ Longest Substring Without Repeating Characters] ( LeetCodeNet/G0001_0100/S0003_longest_substring_without_repeating_characters/Solution.cs ) | Medium | Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Sliding_Window, Big_O_Time_O(n)_ Space_O(1), AI_can_be_used_to_solve_the_task | 3 | 96.84
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| 0030 |[ Substring with Concatenation of All Words] ( LeetCodeNet/G0001_0100/S0030_substring_with_concatenation_of_all_words/Solution.cs ) | Hard | String, Hash_Table, Sliding_Window | 15 | 94.14
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| 0076 |[ Minimum Window Substring] ( LeetCodeNet/G0001_0100/S0076_minimum_window_substring/Solution.cs ) | Hard | Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Sliding_Window, Big_O_Time_O(s.length())_ Space_O(1) | 3 | 99.36
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+ | 0205 |[ Isomorphic Strings] ( LeetCodeNet/G0201_0300/S0205_isomorphic_strings/Solution.cs ) | Easy | String, Hash_Table | 2 | 90.78
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| 0049 |[ Group Anagrams] ( LeetCodeNet/G0001_0100/S0049_group_anagrams/Solution.cs ) | Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, String, Hash_Table, Sorting, Big_O_Time_O(n\* k_log_k)_ Space_O(n) | 17 | 83.74
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| 0001 |[ Two Sum] ( LeetCodeNet/G0001_0100/S0001_two_sum/Solution.cs ) | Easy | Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Big_O_Time_O(n)_ Space_O(n), AI_can_be_used_to_solve_the_task | 1 | 98.51
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+ | 0202 |[ Happy Number] ( LeetCodeNet/G0201_0300/S0202_happy_number/Solution.cs ) | Easy | Top_Interview_Questions, Hash_Table, Math, Two_Pointers | 0 | 100.00
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+ | 0219 |[ Contains Duplicate II] ( LeetCodeNet/G0201_0300/S0219_contains_duplicate_ii/Solution.cs ) | Easy | Array, Hash_Table, Sliding_Window | 12 | 98.14
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| 0128 |[ Longest Consecutive Sequence] ( LeetCodeNet/G0101_0200/S0128_longest_consecutive_sequence/Solution.cs ) | Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Union_Find, Big_O_Time_O(N_log_N)_ Space_O(1) | 16 | 100.00
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#### Top Interview 150 Intervals
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+ | 0199 |[ Binary Tree Right Side View] ( LeetCodeNet/G0101_0200/S0199_binary_tree_right_side_view/Solution.cs ) | Medium | Top_100_Liked_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, LeetCode_75_Binary_Tree/BFS | 0 | 100.00
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| 0102 |[ Binary Tree Level Order Traversal] ( LeetCodeNet/G0101_0200/S0102_binary_tree_level_order_traversal/Solution.cs ) | Medium | Top_100_Liked_Questions, Top_Interview_Questions, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_ Space_O(N) | 0 | 100.00
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| 0103 |[ Binary Tree Zigzag Level Order Traversal] ( LeetCodeNet/G0101_0200/S0103_binary_tree_zigzag_level_order_traversal/Solution.cs ) | Medium | Top_Interview_Questions, Breadth_First_Search, Tree, Binary_Tree | 0 | 100.00
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| 0130 |[ Surrounded Regions] ( LeetCodeNet/G0101_0200/S0130_surrounded_regions/Solution.cs ) | Medium | Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find | 1 | 100.00
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| 0133 |[ Clone Graph] ( LeetCodeNet/G0101_0200/S0133_clone_graph/Solution.cs ) | Medium | Hash_Table, Depth_First_Search, Breadth_First_Search, Graph | 117 | 96.34
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| 0207 |[ Course Schedule] ( LeetCodeNet/G0201_0300/S0207_course_schedule/Solution.cs ) | Medium | Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Graph, Topological_Sort, Big_O_Time_O(N)_ Space_O(N) | 4 | 91.60
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+ | 0210 |[ Course Schedule II] ( LeetCodeNet/G0201_0300/S0210_course_schedule_ii/Solution.cs ) | Medium | Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Graph, Topological_Sort | 4 | 91.35
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#### Top Interview 150 Graph BFS
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| 0208 |[ Implement Trie (Prefix Tree)] ( LeetCodeNet/G0201_0300/S0208_implement_trie_prefix_tree/Trie.cs ) | Medium | Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Design, Trie, LeetCode_75_Trie, Big_O_Time_O(word.length())_ or_O(prefix.length())_ Space_O(N) | 7 | 100.00
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+ | 0211 |[ Design Add and Search Words Data Structure] ( LeetCodeNet/G0201_0300/S0211_design_add_and_search_words_data_structure/WordDictionary.cs ) | Medium | String, Depth_First_Search, Design, Trie | 380 | 93.39
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+ | 0212 |[ Word Search II] ( LeetCodeNet/G0201_0300/S0212_word_search_ii/Solution.cs ) | Hard | Top_Interview_Questions, Array, String, Matrix, Backtracking, Trie | 29 | 100.00
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#### Top Interview 150 Backtracking
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| 0067 |[ Add Binary] ( LeetCodeNet/G0001_0100/S0067_add_binary/Solution.cs ) | Easy | String, Math, Bit_Manipulation, Simulation | 1 | 91.47
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| 0190 |[ Reverse Bits] ( LeetCodeNet/G0101_0200/S0190_reverse_bits/Solution.cs ) | Easy | Top_Interview_Questions, Bit_Manipulation, Divide_and_Conquer | 18 | 93.43
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+ | 0191 |[ Number of 1 Bits] ( LeetCodeNet/G0101_0200/S0191_number_of_1_bits/Solution.cs ) | Easy | Top_Interview_Questions, Bit_Manipulation | 0 | 100.00
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| 0136 |[ Single Number] ( LeetCodeNet/G0101_0200/S0136_single_number/Solution.cs ) | Easy | Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, LeetCode_75_Bit_Manipulation, Big_O_Time_O(N)_ Space_O(1) | 0 | 100.00
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| 0137 |[ Single Number II] ( LeetCodeNet/G0101_0200/S0137_single_number_ii/Solution.cs ) | Medium | Array, Bit_Manipulation | 0 | 100.00
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+ | 0201 |[ Bitwise AND of Numbers Range] ( LeetCodeNet/G0201_0300/S0201_bitwise_and_of_numbers_range/Solution.cs ) | Medium | Bit_Manipulation | 1 | 96.12
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#### Top Interview 150 Math
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+ | 0199 |[ Binary Tree Right Side View] ( LeetCodeNet/G0101_0200/S0199_binary_tree_right_side_view/Solution.cs ) | Medium | Top_100_Liked_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, LeetCode_75_Binary_Tree/BFS | 0 | 100.00
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#### Day 17 Tree
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+ | 0191 |[ Number of 1 Bits] ( LeetCodeNet/G0101_0200/S0191_number_of_1_bits/Solution.cs ) | Easy | Top_Interview_Questions, Bit_Manipulation | 0 | 100.00
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#### Day 14 Bit Manipulation
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| 0438 |[ Find All Anagrams in a String] ( LeetCodeNet/G0401_0500/S0438_find_all_anagrams_in_a_string/Solution.cs ) | Medium | Top_100_Liked_Questions, String, Hash_Table, Sliding_Window, Big_O_Time_O(n+m)_ Space_O(1) | 3 | 97.66
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+ | 0209 |[ Minimum Size Subarray Sum] ( LeetCodeNet/G0201_0300/S0209_minimum_size_subarray_sum/Solution.cs ) | Medium | Array, Binary_Search, Prefix_Sum, Sliding_Window | 0 | 100.00
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#### Day 6 Breadth First Search Depth First Search
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+ | 0201 |[ Bitwise AND of Numbers Range] ( LeetCodeNet/G0201_0300/S0201_bitwise_and_of_numbers_range/Solution.cs ) | Medium | Bit_Manipulation | 1 | 96.12
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#### Day 20 Others
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+ | 0202 |[ Happy Number] ( LeetCodeNet/G0201_0300/S0202_happy_number/Solution.cs ) | Easy | Top_Interview_Questions, Hash_Table, Math, Two_Pointers | 0 | 100.00
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| 0149 |[ Max Points on a Line] ( LeetCodeNet/G0101_0200/S0149_max_points_on_a_line/Solution.cs ) | Hard | Top_Interview_Questions, Array, Hash_Table, Math, Geometry | 5 | 100.00
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### Binary Search I
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+ | 0209 |[ Minimum Size Subarray Sum] ( LeetCodeNet/G0201_0300/S0209_minimum_size_subarray_sum/Solution.cs ) | Medium | Array, Binary_Search, Prefix_Sum, Sliding_Window | 0 | 100.00
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#### Day 2
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| 0230 |[ Kth Smallest Element in a BST] ( LeetCodeNet/G0201_0300/S0230_kth_smallest_element_in_a_bst/Solution.cs ) | Medium | Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Data_Structure_II_Day_17_Tree, Level_2_Day_9_Binary_Search_Tree, Top_Interview_150_Binary_Search_Tree, Big_O_Time_O(n)_ Space_O(n) | 0 | 100.00
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| 0226 |[ Invert Binary Tree] ( LeetCodeNet/G0201_0300/S0226_invert_binary_tree/Solution.cs ) | Easy | Top_100_Liked_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Data_Structure_I_Day_12_Tree, Level_2_Day_6_Tree, Udemy_Tree_Stack_Queue, Top_Interview_150_Binary_Tree_General, Big_O_Time_O(n)_ Space_O(n) | 0 | 100.00
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| 0221 |[ Maximal Square] ( LeetCodeNet/G0201_0300/S0221_maximal_square/Solution.cs ) | Medium | Array, Dynamic_Programming, Matrix, Dynamic_Programming_I_Day_16, Top_Interview_150_Multidimensional_DP, Big_O_Time_O(m\* n)_ Space_O(m\* n) | 3 | 96.90
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+ | 0219 |[ Contains Duplicate II] ( LeetCodeNet/G0201_0300/S0219_contains_duplicate_ii/Solution.cs ) | Easy | Array, Hash_Table, Sliding_Window, Top_Interview_150_Hashmap | 12 | 98.14
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| 0215 |[ Kth Largest Element in an Array] ( LeetCodeNet/G0201_0300/S0215_kth_largest_element_in_an_array/Solution.cs ) | Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Heap_Priority_Queue, Divide_and_Conquer, Quickselect, LeetCode_75_Heap/Priority_Queue, Data_Structure_II_Day_20_Heap_Priority_Queue, Top_Interview_150_Heap, Big_O_Time_O(n\* log(n))_ Space_O(log(n)) | 85 | 88.50
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+ | 0212 |[ Word Search II] ( LeetCodeNet/G0201_0300/S0212_word_search_ii/Solution.cs ) | Hard | Top_Interview_Questions, Array, String, Matrix, Backtracking, Trie, Top_Interview_150_Trie | 29 | 100.00
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+ | 0211 |[ Design Add and Search Words Data Structure] ( LeetCodeNet/G0201_0300/S0211_design_add_and_search_words_data_structure/WordDictionary.cs ) | Medium | String, Depth_First_Search, Design, Trie, Top_Interview_150_Trie | 380 | 93.39
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+ | 0210 |[ Course Schedule II] ( LeetCodeNet/G0201_0300/S0210_course_schedule_ii/Solution.cs ) | Medium | Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Graph, Topological_Sort, Level_2_Day_11_Graph/BFS/DFS, Top_Interview_150_Graph_General | 4 | 91.35
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+ | 0209 |[ Minimum Size Subarray Sum] ( LeetCodeNet/G0201_0300/S0209_minimum_size_subarray_sum/Solution.cs ) | Medium | Array, Binary_Search, Prefix_Sum, Sliding_Window, Algorithm_II_Day_5_Sliding_Window, Binary_Search_II_Day_1, Top_Interview_150_Sliding_Window | 0 | 100.00
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| 0208 |[ Implement Trie (Prefix Tree)] ( LeetCodeNet/G0201_0300/S0208_implement_trie_prefix_tree/Trie.cs ) | Medium | Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Design, Trie, LeetCode_75_Trie, Level_2_Day_16_Design, Udemy_Trie_and_Heap, Top_Interview_150_Trie, Big_O_Time_O(word.length())_ or_O(prefix.length())_ Space_O(N) | 7 | 100.00
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| 0207 |[ Course Schedule] ( LeetCodeNet/G0201_0300/S0207_course_schedule/Solution.cs ) | Medium | Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Graph, Topological_Sort, Top_Interview_150_Graph_General, Big_O_Time_O(N)_ Space_O(N) | 4 | 91.60
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| 0206 |[ Reverse Linked List] ( LeetCodeNet/G0201_0300/S0206_reverse_linked_list/Solution.cs ) | Easy | Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, LeetCode_75_LinkedList, Data_Structure_I_Day_8_Linked_List, Algorithm_I_Day_10_Recursion_Backtracking, Level_1_Day_3_Linked_List, Udemy_Linked_List, Big_O_Time_O(N)_ Space_O(1) | 0 | 100.00
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+ | 0205 |[ Isomorphic Strings] ( LeetCodeNet/G0201_0300/S0205_isomorphic_strings/Solution.cs ) | Easy | String, Hash_Table, Level_1_Day_2_String, Top_Interview_150_Hashmap | 2 | 90.78
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+ | 0202 |[ Happy Number] ( LeetCodeNet/G0201_0300/S0202_happy_number/Solution.cs ) | Easy | Top_Interview_Questions, Hash_Table, Math, Two_Pointers, Algorithm_II_Day_21_Others, Programming_Skills_I_Day_4_Loop, Level_2_Day_1_Implementation/Simulation, Top_Interview_150_Hashmap | 0 | 100.00
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+ | 0201 |[ Bitwise AND of Numbers Range] ( LeetCodeNet/G0201_0300/S0201_bitwise_and_of_numbers_range/Solution.cs ) | Medium | Bit_Manipulation, Algorithm_II_Day_19_Bit_Manipulation, Top_Interview_150_Bit_Manipulation | 1 | 96.12
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| 0200 |[ Number of Islands] ( LeetCodeNet/G0101_0200/S0200_number_of_islands/Solution.cs ) | Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Algorithm_II_Day_6_Breadth_First_Search_Depth_First_Search, Graph_Theory_I_Day_1_Matrix_Related_Problems, Level_1_Day_9_Graph/BFS/DFS, Udemy_Graph, Top_Interview_150_Graph_General, Big_O_Time_O(M\* N)_ Space_O(M\* N) | 131 | 65.99
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+ | 0199 |[ Binary Tree Right Side View] ( LeetCodeNet/G0101_0200/S0199_binary_tree_right_side_view/Solution.cs ) | Medium | Top_100_Liked_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, LeetCode_75_Binary_Tree/BFS, Data_Structure_II_Day_16_Tree, Level_2_Day_15_Tree, Top_Interview_150_Binary_Tree_BFS | 0 | 100.00
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| 0198 |[ House Robber] ( LeetCodeNet/G0101_0200/S0198_house_robber/Solution.cs ) | Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, LeetCode_75_DP/1D, Algorithm_I_Day_12_Dynamic_Programming, Dynamic_Programming_I_Day_3, Level_2_Day_12_Dynamic_Programming, Udemy_Dynamic_Programming, Top_Interview_150_1D_DP, Big_O_Time_O(n)_ Space_O(n) | 0 | 100.00
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+ | 0191 |[ Number of 1 Bits] ( LeetCodeNet/G0101_0200/S0191_number_of_1_bits/Solution.cs ) | Easy | Top_Interview_Questions, Bit_Manipulation, Algorithm_I_Day_13_Bit_Manipulation, Programming_Skills_I_Day_2_Operator, Udemy_Bit_Manipulation, Top_Interview_150_Bit_Manipulation | 0 | 100.00
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| 0190 |[ Reverse Bits] ( LeetCodeNet/G0101_0200/S0190_reverse_bits/Solution.cs ) | Easy | Top_Interview_Questions, Bit_Manipulation, Divide_and_Conquer, Algorithm_I_Day_14_Bit_Manipulation, Udemy_Bit_Manipulation, Top_Interview_150_Bit_Manipulation | 18 | 93.43
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| 0189 |[ Rotate Array] ( LeetCodeNet/G0101_0200/S0189_rotate_array/Solution.cs ) | Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Two_Pointers, Algorithm_I_Day_2_Two_Pointers, Udemy_Arrays, Top_Interview_150_Array/String, Big_O_Time_O(n)_ Space_O(1) | 0 | 100.00
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| 0188 |[ Best Time to Buy and Sell Stock IV] ( LeetCodeNet/G0101_0200/S0188_best_time_to_buy_and_sell_stock_iv/Solution.cs ) | Hard | Array, Dynamic_Programming, Top_Interview_150_Multidimensional_DP | 1 | 100.00
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