@@ -34,7 +34,6 @@ implementation 'com.github.javadev:leetcode-in-java:1.46'
3434> [ "For coding interview preparation, LeetCode is one of the best online resource providing a rich library of more than 300 real coding interview questions for you to practice from using one of the 7 supported languages - C, C++, Java, Python, C#, JavaScript, Ruby."] ( https://www.quora.com/How-effective-is-Leetcode-for-preparing-for-technical-interviews )
3535
3636##
37- * [ Programming Skills I] ( #programming-skills-i )
3837* [ Programming Skills II] ( #programming-skills-ii )
3938* [ Graph Theory I] ( #graph-theory-i )
4039* [ SQL I] ( #sql-i )
@@ -49,102 +48,7 @@ implementation 'com.github.javadev:leetcode-in-java:1.46'
4948* [ Binary Search I] ( #binary-search-i )
5049* [ Binary Search II] ( #binary-search-ii )
5150* [ Dynamic Programming I] ( #dynamic-programming-i )
52-
53- ### Programming Skills I
54-
55- #### Day 1 Basic Data Type
56-
57- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
58- |-|-|-|-|-|-
59- | 1523 |[ Count Odd Numbers in an Interval Range] ( src/main/java/g1501_1600/s1523_count_odd_numbers_in_an_interval_range/Solution.java ) | Easy | Math | 0 | 100.00
60- | 1491 |[ Average Salary Excluding the Minimum and Maximum Salary] ( src/main/java/g1401_1500/s1491_average_salary_excluding_the_minimum_and_maximum_salary/Solution.java ) | Easy | Array, Sorting | 0 | 100.00
61-
62- #### Day 2 Operator
63-
64- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
65- |-|-|-|-|-|-
66- | 0191 |[ Number of 1 Bits] ( src/main/java/g0101_0200/s0191_number_of_1_bits/Solution.java ) | Easy | Top_Interview_Questions, Bit_Manipulation | 0 | 100.00
67- | 1281 |[ Subtract the Product and Sum of Digits of an Integer] ( src/main/java/g1201_1300/s1281_subtract_the_product_and_sum_of_digits_of_an_integer/Solution.java ) | Easy | Math | 0 | 100.00
68-
69- #### Day 3 Conditional Statements
70-
71- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
72- |-|-|-|-|-|-
73- | 0976 |[ Largest Perimeter Triangle] ( src/main/java/g0901_1000/s0976_largest_perimeter_triangle/Solution.java ) | Easy | Array, Math, Sorting, Greedy | 7 | 99.33
74- | 1779 |[ Find Nearest Point That Has the Same X or Y Coordinate] ( src/main/java/g1701_1800/s1779_find_nearest_point_that_has_the_same_x_or_y_coordinate/Solution.java ) | Easy | Array | 1 | 100.00
75-
76- #### Day 4 Loop
77-
78- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
79- |-|-|-|-|-|-
80- | 1822 |[ Sign of the Product of an Array] ( src/main/java/g1801_1900/s1822_sign_of_the_product_of_an_array/Solution.java ) | Easy | Array, Math | 1 | 58.05
81- | 1502 |[ Can Make Arithmetic Progression From Sequence] ( src/main/java/g1501_1600/s1502_can_make_arithmetic_progression_from_sequence/Solution.java ) | Easy | Array, Sorting | 2 | 90.55
82- | 0202 |[ Happy Number] ( src/main/java/g0201_0300/s0202_happy_number/Solution.java ) | Easy | Top_Interview_Questions, Hash_Table, Math, Two_Pointers | 0 | 100.00
83- | 1790 |[ Check if One String Swap Can Make Strings Equal] ( src/main/java/g1701_1800/s1790_check_if_one_string_swap_can_make_strings_equal/Solution.java ) | Easy | String, Hash_Table, Counting | 0 | 100.00
84-
85- #### Day 5 Function
86-
87- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
88- |-|-|-|-|-|-
89- | 0589 |[ N-ary Tree Preorder Traversal] ( src/main/java/g0501_0600/s0589_n_ary_tree_preorder_traversal/Solution.java ) | Easy | Depth_First_Search, Tree, Stack | 1 | 90.98
90- | 0496 |[ Next Greater Element I] ( src/main/java/g0401_0500/s0496_next_greater_element_i/Solution.java ) | Easy | Array, Hash_Table, Stack, Monotonic_Stack | 4 | 81.18
91- | 1232 |[ Check If It Is a Straight Line] ( src/main/java/g1201_1300/s1232_check_if_it_is_a_straight_line/Solution.java ) | Easy | Array, Math, Geometry | 0 | 100.00
92-
93- #### Day 6 Array
94-
95- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
96- |-|-|-|-|-|-
97- | 1588 |[ Sum of All Odd Length Subarrays] ( src/main/java/g1501_1600/s1588_sum_of_all_odd_length_subarrays/Solution.java ) | Easy | Array, Math, Prefix_Sum | 0 | 100.00
98- | 0283 |[ Move Zeroes] ( src/main/java/g0201_0300/s0283_move_zeroes/Solution.java ) | Easy | Top_100_Liked_Questions, Array, Two_Pointers, LeetCode_75_Two_Pointers, Big_O_Time_O(n)_ Space_O(1) | 2 | 83.99
99- | 1672 |[ Richest Customer Wealth] ( src/main/java/g1601_1700/s1672_richest_customer_wealth/Solution.java ) | Easy | Array, Matrix | 0 | 100.00
100-
101- #### Day 7 Array
102-
103- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
104- |-|-|-|-|-|-
105- | 1572 |[ Matrix Diagonal Sum] ( src/main/java/g1501_1600/s1572_matrix_diagonal_sum/Solution.java ) | Easy | Array, Matrix | 0 | 100.00
106- | 0566 |[ Reshape the Matrix] ( src/main/java/g0501_0600/s0566_reshape_the_matrix/Solution.java ) | Easy | Array, Matrix, Simulation | 1 | 90.08
107-
108- #### Day 8 String
109-
110- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
111- |-|-|-|-|-|-
112- | 1768 |[ Merge Strings Alternately] ( src/main/java/g1701_1800/s1768_merge_strings_alternately/Solution.java ) | Easy | String, Two_Pointers, LeetCode_75_Array/String | 1 | 86.26
113- | 1678 |[ Goal Parser Interpretation] ( src/main/java/g1601_1700/s1678_goal_parser_interpretation/Solution.java ) | Easy | String | 0 | 100.00
114- | 0389 |[ Find the Difference] ( src/main/java/g0301_0400/s0389_find_the_difference/Solution.java ) | Easy | String, Hash_Table, Sorting, Bit_Manipulation | 1 | 100.00
115-
116- #### Day 9 String
117-
118- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
119- |-|-|-|-|-|-
120- | 0709 |[ To Lower Case] ( src/main/java/g0701_0800/s0709_to_lower_case/Solution.java ) | Easy | String | 1 | 71.74
121- | 1309 |[ Decrypt String from Alphabet to Integer Mapping] ( src/main/java/g1301_1400/s1309_decrypt_string_from_alphabet_to_integer_mapping/Solution.java ) | Easy | String | 0 | 100.00
122- | 0953 |[ Verifying an Alien Dictionary] ( src/main/java/g0901_1000/s0953_verifying_an_alien_dictionary/Solution.java ) | Easy | Array, String, Hash_Table | 0 | 100.00
123-
124- #### Day 10 Linked List and Tree
125-
126- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
127- |-|-|-|-|-|-
128- | 1290 |[ Convert Binary Number in a Linked List to Integer] ( src/main/java/g1201_1300/s1290_convert_binary_number_in_a_linked_list_to_integer/Solution.java ) | Easy | Math, Linked_List | 0 | 100.00
129- | 0876 |[ Middle of the Linked List] ( src/main/java/g0801_0900/s0876_middle_of_the_linked_list/Solution.java ) | Easy | Two_Pointers, Linked_List | 0 | 100.00
130- | 0104 |[ Maximum Depth of Binary Tree] ( src/main/java/g0101_0200/s0104_maximum_depth_of_binary_tree/Solution.java ) | Easy | Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, LeetCode_75_Binary_Tree/DFS, Big_O_Time_O(N)_ Space_O(H) | 0 | 100.00
131- | 0404 |[ Sum of Left Leaves] ( src/main/java/g0401_0500/s0404_sum_of_left_leaves/Solution.java ) | Easy | Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree | 1 | 29.26
132-
133- #### Day 11 Containers and Libraries
134-
135- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
136- |-|-|-|-|-|-
137- | 1356 |[ Sort Integers by The Number of 1 Bits] ( src/main/java/g1301_1400/s1356_sort_integers_by_the_number_of_1_bits/Solution.java ) | Easy | Array, Sorting, Bit_Manipulation, Counting | 10 | 65.50
138- | 0232 |[ Implement Queue using Stacks] ( src/main/java/g0201_0300/s0232_implement_queue_using_stacks/MyQueue.java ) | Easy | Stack, Design, Queue | 1 | 67.21
139- | 0242 |[ Valid Anagram] ( src/main/java/g0201_0300/s0242_valid_anagram/Solution.java ) | Easy | String, Hash_Table, Sorting | 2 | 97.76
140- | 0217 |[ Contains Duplicate] ( src/main/java/g0201_0300/s0217_contains_duplicate/Solution.java ) | Easy | Top_Interview_Questions, Array, Hash_Table, Sorting | 6 | 96.68
141-
142- #### Day 12 Class and Object
143-
144- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
145- |-|-|-|-|-|-
146- | 1603 |[ Design Parking System] ( src/main/java/g1601_1700/s1603_design_parking_system/ParkingSystem.java ) | Easy | Design, Simulation, Counting | 8 | 76.16
147- | 0303 |[ Range Sum Query - Immutable] ( src/main/java/g0301_0400/s0303_range_sum_query_immutable/NumArray.java ) | Easy | Array, Design, Prefix_Sum | 7 | 100.00
51+ * [ Programming Skills I] ( #programming-skills-i )
14852
14953### Programming Skills II
15054
@@ -2112,6 +2016,102 @@ implementation 'com.github.javadev:leetcode-in-java:1.46'
21122016| 0343 |[ Integer Break] ( src/main/java/g0301_0400/s0343_integer_break/Solution.java ) | Medium | Dynamic_Programming, Math | 0 | 100.00
21132017| 0279 |[ Perfect Squares] ( src/main/java/g0201_0300/s0279_perfect_squares/Solution.java ) | Medium | Top_100_Liked_Questions, Dynamic_Programming, Math, Breadth_First_Search | 1 | 100.00
21142018
2019+ ### Programming Skills I
2020+
2021+ #### Day 1 Basic Data Type
2022+
2023+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
2024+ |-|-|-|-|-|-
2025+ | 1523 |[ Count Odd Numbers in an Interval Range] ( src/main/java/g1501_1600/s1523_count_odd_numbers_in_an_interval_range/Solution.java ) | Easy | Math | 0 | 100.00
2026+ | 1491 |[ Average Salary Excluding the Minimum and Maximum Salary] ( src/main/java/g1401_1500/s1491_average_salary_excluding_the_minimum_and_maximum_salary/Solution.java ) | Easy | Array, Sorting | 0 | 100.00
2027+
2028+ #### Day 2 Operator
2029+
2030+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
2031+ |-|-|-|-|-|-
2032+ | 0191 |[ Number of 1 Bits] ( src/main/java/g0101_0200/s0191_number_of_1_bits/Solution.java ) | Easy | Top_Interview_Questions, Bit_Manipulation | 0 | 100.00
2033+ | 1281 |[ Subtract the Product and Sum of Digits of an Integer] ( src/main/java/g1201_1300/s1281_subtract_the_product_and_sum_of_digits_of_an_integer/Solution.java ) | Easy | Math | 0 | 100.00
2034+
2035+ #### Day 3 Conditional Statements
2036+
2037+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
2038+ |-|-|-|-|-|-
2039+ | 0976 |[ Largest Perimeter Triangle] ( src/main/java/g0901_1000/s0976_largest_perimeter_triangle/Solution.java ) | Easy | Array, Math, Sorting, Greedy | 7 | 99.33
2040+ | 1779 |[ Find Nearest Point That Has the Same X or Y Coordinate] ( src/main/java/g1701_1800/s1779_find_nearest_point_that_has_the_same_x_or_y_coordinate/Solution.java ) | Easy | Array | 1 | 100.00
2041+
2042+ #### Day 4 Loop
2043+
2044+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
2045+ |-|-|-|-|-|-
2046+ | 1822 |[ Sign of the Product of an Array] ( src/main/java/g1801_1900/s1822_sign_of_the_product_of_an_array/Solution.java ) | Easy | Array, Math | 1 | 58.05
2047+ | 1502 |[ Can Make Arithmetic Progression From Sequence] ( src/main/java/g1501_1600/s1502_can_make_arithmetic_progression_from_sequence/Solution.java ) | Easy | Array, Sorting | 2 | 90.55
2048+ | 0202 |[ Happy Number] ( src/main/java/g0201_0300/s0202_happy_number/Solution.java ) | Easy | Top_Interview_Questions, Hash_Table, Math, Two_Pointers | 0 | 100.00
2049+ | 1790 |[ Check if One String Swap Can Make Strings Equal] ( src/main/java/g1701_1800/s1790_check_if_one_string_swap_can_make_strings_equal/Solution.java ) | Easy | String, Hash_Table, Counting | 0 | 100.00
2050+
2051+ #### Day 5 Function
2052+
2053+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
2054+ |-|-|-|-|-|-
2055+ | 0589 |[ N-ary Tree Preorder Traversal] ( src/main/java/g0501_0600/s0589_n_ary_tree_preorder_traversal/Solution.java ) | Easy | Depth_First_Search, Tree, Stack | 1 | 90.98
2056+ | 0496 |[ Next Greater Element I] ( src/main/java/g0401_0500/s0496_next_greater_element_i/Solution.java ) | Easy | Array, Hash_Table, Stack, Monotonic_Stack | 4 | 81.18
2057+ | 1232 |[ Check If It Is a Straight Line] ( src/main/java/g1201_1300/s1232_check_if_it_is_a_straight_line/Solution.java ) | Easy | Array, Math, Geometry | 0 | 100.00
2058+
2059+ #### Day 6 Array
2060+
2061+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
2062+ |-|-|-|-|-|-
2063+ | 1588 |[ Sum of All Odd Length Subarrays] ( src/main/java/g1501_1600/s1588_sum_of_all_odd_length_subarrays/Solution.java ) | Easy | Array, Math, Prefix_Sum | 0 | 100.00
2064+ | 0283 |[ Move Zeroes] ( src/main/java/g0201_0300/s0283_move_zeroes/Solution.java ) | Easy | Top_100_Liked_Questions, Array, Two_Pointers, LeetCode_75_Two_Pointers, Big_O_Time_O(n)_ Space_O(1) | 2 | 83.99
2065+ | 1672 |[ Richest Customer Wealth] ( src/main/java/g1601_1700/s1672_richest_customer_wealth/Solution.java ) | Easy | Array, Matrix | 0 | 100.00
2066+
2067+ #### Day 7 Array
2068+
2069+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
2070+ |-|-|-|-|-|-
2071+ | 1572 |[ Matrix Diagonal Sum] ( src/main/java/g1501_1600/s1572_matrix_diagonal_sum/Solution.java ) | Easy | Array, Matrix | 0 | 100.00
2072+ | 0566 |[ Reshape the Matrix] ( src/main/java/g0501_0600/s0566_reshape_the_matrix/Solution.java ) | Easy | Array, Matrix, Simulation | 1 | 90.08
2073+
2074+ #### Day 8 String
2075+
2076+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
2077+ |-|-|-|-|-|-
2078+ | 1768 |[ Merge Strings Alternately] ( src/main/java/g1701_1800/s1768_merge_strings_alternately/Solution.java ) | Easy | String, Two_Pointers, LeetCode_75_Array/String | 1 | 86.26
2079+ | 1678 |[ Goal Parser Interpretation] ( src/main/java/g1601_1700/s1678_goal_parser_interpretation/Solution.java ) | Easy | String | 0 | 100.00
2080+ | 0389 |[ Find the Difference] ( src/main/java/g0301_0400/s0389_find_the_difference/Solution.java ) | Easy | String, Hash_Table, Sorting, Bit_Manipulation | 1 | 100.00
2081+
2082+ #### Day 9 String
2083+
2084+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
2085+ |-|-|-|-|-|-
2086+ | 0709 |[ To Lower Case] ( src/main/java/g0701_0800/s0709_to_lower_case/Solution.java ) | Easy | String | 1 | 71.74
2087+ | 1309 |[ Decrypt String from Alphabet to Integer Mapping] ( src/main/java/g1301_1400/s1309_decrypt_string_from_alphabet_to_integer_mapping/Solution.java ) | Easy | String | 0 | 100.00
2088+ | 0953 |[ Verifying an Alien Dictionary] ( src/main/java/g0901_1000/s0953_verifying_an_alien_dictionary/Solution.java ) | Easy | Array, String, Hash_Table | 0 | 100.00
2089+
2090+ #### Day 10 Linked List and Tree
2091+
2092+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
2093+ |-|-|-|-|-|-
2094+ | 1290 |[ Convert Binary Number in a Linked List to Integer] ( src/main/java/g1201_1300/s1290_convert_binary_number_in_a_linked_list_to_integer/Solution.java ) | Easy | Math, Linked_List | 0 | 100.00
2095+ | 0876 |[ Middle of the Linked List] ( src/main/java/g0801_0900/s0876_middle_of_the_linked_list/Solution.java ) | Easy | Two_Pointers, Linked_List | 0 | 100.00
2096+ | 0104 |[ Maximum Depth of Binary Tree] ( src/main/java/g0101_0200/s0104_maximum_depth_of_binary_tree/Solution.java ) | Easy | Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, LeetCode_75_Binary_Tree/DFS, Big_O_Time_O(N)_ Space_O(H) | 0 | 100.00
2097+ | 0404 |[ Sum of Left Leaves] ( src/main/java/g0401_0500/s0404_sum_of_left_leaves/Solution.java ) | Easy | Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree | 1 | 29.26
2098+
2099+ #### Day 11 Containers and Libraries
2100+
2101+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
2102+ |-|-|-|-|-|-
2103+ | 1356 |[ Sort Integers by The Number of 1 Bits] ( src/main/java/g1301_1400/s1356_sort_integers_by_the_number_of_1_bits/Solution.java ) | Easy | Array, Sorting, Bit_Manipulation, Counting | 10 | 65.50
2104+ | 0232 |[ Implement Queue using Stacks] ( src/main/java/g0201_0300/s0232_implement_queue_using_stacks/MyQueue.java ) | Easy | Stack, Design, Queue | 1 | 67.21
2105+ | 0242 |[ Valid Anagram] ( src/main/java/g0201_0300/s0242_valid_anagram/Solution.java ) | Easy | String, Hash_Table, Sorting | 2 | 97.76
2106+ | 0217 |[ Contains Duplicate] ( src/main/java/g0201_0300/s0217_contains_duplicate/Solution.java ) | Easy | Top_Interview_Questions, Array, Hash_Table, Sorting | 6 | 96.68
2107+
2108+ #### Day 12 Class and Object
2109+
2110+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
2111+ |-|-|-|-|-|-
2112+ | 1603 |[ Design Parking System] ( src/main/java/g1601_1700/s1603_design_parking_system/ParkingSystem.java ) | Easy | Design, Simulation, Counting | 8 | 76.16
2113+ | 0303 |[ Range Sum Query - Immutable] ( src/main/java/g0301_0400/s0303_range_sum_query_immutable/NumArray.java ) | Easy | Array, Design, Prefix_Sum | 7 | 100.00
2114+
21152115## Contributing
21162116Your ideas/fixes/algorithms are more than welcome!
21172117
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