@@ -34,7 +34,6 @@ implementation 'com.github.javadev:leetcode-in-java:1.30'
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 )
@@ -48,102 +47,7 @@ implementation 'com.github.javadev:leetcode-in-java:1.30'
4847* [ Binary Search I] ( #binary-search-i )
4948* [ Binary Search II] ( #binary-search-ii )
5049* [ Dynamic Programming I] ( #dynamic-programming-i )
51-
52- ### Programming Skills I
53-
54- #### Day 1 Basic Data Type
55-
56- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
57- |-|-|-|-|-|-
58- | 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
59- | 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
60-
61- #### Day 2 Operator
62-
63- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
64- |-|-|-|-|-|-
65- | 0191 |[ Number of 1 Bits] ( src/main/java/g0101_0200/s0191_number_of_1_bits/Solution.java ) | Easy | Top_Interview_Questions, Bit_Manipulation | 1 | 84.87
66- | 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
67-
68- #### Day 3 Conditional Statements
69-
70- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
71- |-|-|-|-|-|-
72- | 0976 |[ Largest Perimeter Triangle] ( src/main/java/g0901_1000/s0976_largest_perimeter_triangle/Solution.java ) | Easy | Array, Math, Sorting, Greedy | 12 | 26.01
73- | 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
74-
75- #### Day 4 Loop
76-
77- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
78- |-|-|-|-|-|-
79- | 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
80- | 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
81- | 0202 |[ Happy Number] ( src/main/java/g0201_0300/s0202_happy_number/Solution.java ) | Easy | Top_Interview_Questions, Hash_Table, Math, Two_Pointers | 1 | 98.59
82- | 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
83-
84- #### Day 5 Function
85-
86- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
87- |-|-|-|-|-|-
88- | 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
89- | 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
90- | 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
91-
92- #### Day 6 Array
93-
94- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
95- |-|-|-|-|-|-
96- | 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
97- | 0283 |[ Move Zeroes] ( src/main/java/g0201_0300/s0283_move_zeroes/Solution.java ) | Easy | Top_100_Liked_Questions, Array, Two_Pointers, Big_O_Time_O(n)_ Space_O(1) | 2 | 79.54
98- | 1672 |[ Richest Customer Wealth] ( src/main/java/g1601_1700/s1672_richest_customer_wealth/Solution.java ) | Easy | Array, Matrix | 0 | 100.00
99-
100- #### Day 7 Array
101-
102- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
103- |-|-|-|-|-|-
104- | 1572 |[ Matrix Diagonal Sum] ( src/main/java/g1501_1600/s1572_matrix_diagonal_sum/Solution.java ) | Easy | Array, Matrix | 0 | 100.00
105- | 0566 |[ Reshape the Matrix] ( src/main/java/g0501_0600/s0566_reshape_the_matrix/Solution.java ) | Easy | Array, Matrix, Simulation | 1 | 90.08
106-
107- #### Day 8 String
108-
109- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
110- |-|-|-|-|-|-
111- | 1768 |[ Merge Strings Alternately] ( src/main/java/g1701_1800/s1768_merge_strings_alternately/Solution.java ) | Easy | String, Two_Pointers | 1 | 86.26
112- | 1678 |[ Goal Parser Interpretation] ( src/main/java/g1601_1700/s1678_goal_parser_interpretation/Solution.java ) | Easy | String | 0 | 100.00
113- | 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
114-
115- #### Day 9 String
116-
117- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
118- |-|-|-|-|-|-
119- | 0709 |[ To Lower Case] ( src/main/java/g0701_0800/s0709_to_lower_case/Solution.java ) | Easy | String | 1 | 71.74
120- | 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 | 6 | 28.25
121- | 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
122-
123- #### Day 10 Linked List and Tree
124-
125- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
126- |-|-|-|-|-|-
127- | 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
128- | 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
129- | 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, Big_O_Time_O(N)_ Space_O(H) | 0 | 100.00
130- | 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
131-
132- #### Day 11 Containers and Libraries
133-
134- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
135- |-|-|-|-|-|-
136- | 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
137- | 0232 |[ Implement Queue using Stacks] ( src/main/java/g0201_0300/s0232_implement_queue_using_stacks/MyQueue.java ) | Easy | Stack, Design, Queue | 1 | 67.21
138- | 0242 |[ Valid Anagram] ( src/main/java/g0201_0300/s0242_valid_anagram/Solution.java ) | Easy | String, Hash_Table, Sorting | 2 | 99.01
139- | 0217 |[ Contains Duplicate] ( src/main/java/g0201_0300/s0217_contains_duplicate/Solution.java ) | Easy | Top_Interview_Questions, Array, Hash_Table, Sorting | 6 | 96.68
140-
141- #### Day 12 Class and Object
142-
143- | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
144- |-|-|-|-|-|-
145- | 1603 |[ Design Parking System] ( src/main/java/g1601_1700/s1603_design_parking_system/ParkingSystem.java ) | Easy | Design, Simulation, Counting | 8 | 76.16
146- | 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
50+ * [ Programming Skills I] ( #programming-skills-i )
14751
14852### Programming Skills II
14953
@@ -1844,6 +1748,102 @@ implementation 'com.github.javadev:leetcode-in-java:1.30'
18441748| 0343 |[ Integer Break] ( src/main/java/g0301_0400/s0343_integer_break/Solution.java ) | Medium | Dynamic_Programming, Math | 0 | 100.00
18451749| 0279 |[ Perfect Squares] ( src/main/java/g0201_0300/s0279_perfect_squares/Solution.java ) | Medium | Dynamic_Programming, Math, Breadth_First_Search | 1 | 100.00
18461750
1751+ ### Programming Skills I
1752+
1753+ #### Day 1 Basic Data Type
1754+
1755+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
1756+ |-|-|-|-|-|-
1757+ | 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
1758+ | 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
1759+
1760+ #### Day 2 Operator
1761+
1762+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
1763+ |-|-|-|-|-|-
1764+ | 0191 |[ Number of 1 Bits] ( src/main/java/g0101_0200/s0191_number_of_1_bits/Solution.java ) | Easy | Top_Interview_Questions, Bit_Manipulation | 1 | 84.87
1765+ | 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
1766+
1767+ #### Day 3 Conditional Statements
1768+
1769+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
1770+ |-|-|-|-|-|-
1771+ | 0976 |[ Largest Perimeter Triangle] ( src/main/java/g0901_1000/s0976_largest_perimeter_triangle/Solution.java ) | Easy | Array, Math, Sorting, Greedy | 12 | 26.01
1772+ | 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
1773+
1774+ #### Day 4 Loop
1775+
1776+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
1777+ |-|-|-|-|-|-
1778+ | 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
1779+ | 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
1780+ | 0202 |[ Happy Number] ( src/main/java/g0201_0300/s0202_happy_number/Solution.java ) | Easy | Top_Interview_Questions, Hash_Table, Math, Two_Pointers | 1 | 98.59
1781+ | 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
1782+
1783+ #### Day 5 Function
1784+
1785+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
1786+ |-|-|-|-|-|-
1787+ | 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
1788+ | 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
1789+ | 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
1790+
1791+ #### Day 6 Array
1792+
1793+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
1794+ |-|-|-|-|-|-
1795+ | 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
1796+ | 0283 |[ Move Zeroes] ( src/main/java/g0201_0300/s0283_move_zeroes/Solution.java ) | Easy | Top_100_Liked_Questions, Array, Two_Pointers, Big_O_Time_O(n)_ Space_O(1) | 2 | 79.54
1797+ | 1672 |[ Richest Customer Wealth] ( src/main/java/g1601_1700/s1672_richest_customer_wealth/Solution.java ) | Easy | Array, Matrix | 0 | 100.00
1798+
1799+ #### Day 7 Array
1800+
1801+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
1802+ |-|-|-|-|-|-
1803+ | 1572 |[ Matrix Diagonal Sum] ( src/main/java/g1501_1600/s1572_matrix_diagonal_sum/Solution.java ) | Easy | Array, Matrix | 0 | 100.00
1804+ | 0566 |[ Reshape the Matrix] ( src/main/java/g0501_0600/s0566_reshape_the_matrix/Solution.java ) | Easy | Array, Matrix, Simulation | 1 | 90.08
1805+
1806+ #### Day 8 String
1807+
1808+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
1809+ |-|-|-|-|-|-
1810+ | 1768 |[ Merge Strings Alternately] ( src/main/java/g1701_1800/s1768_merge_strings_alternately/Solution.java ) | Easy | String, Two_Pointers | 1 | 86.26
1811+ | 1678 |[ Goal Parser Interpretation] ( src/main/java/g1601_1700/s1678_goal_parser_interpretation/Solution.java ) | Easy | String | 0 | 100.00
1812+ | 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
1813+
1814+ #### Day 9 String
1815+
1816+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
1817+ |-|-|-|-|-|-
1818+ | 0709 |[ To Lower Case] ( src/main/java/g0701_0800/s0709_to_lower_case/Solution.java ) | Easy | String | 1 | 71.74
1819+ | 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 | 6 | 28.25
1820+ | 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
1821+
1822+ #### Day 10 Linked List and Tree
1823+
1824+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
1825+ |-|-|-|-|-|-
1826+ | 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
1827+ | 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
1828+ | 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, Big_O_Time_O(N)_ Space_O(H) | 0 | 100.00
1829+ | 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
1830+
1831+ #### Day 11 Containers and Libraries
1832+
1833+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
1834+ |-|-|-|-|-|-
1835+ | 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
1836+ | 0232 |[ Implement Queue using Stacks] ( src/main/java/g0201_0300/s0232_implement_queue_using_stacks/MyQueue.java ) | Easy | Stack, Design, Queue | 1 | 67.21
1837+ | 0242 |[ Valid Anagram] ( src/main/java/g0201_0300/s0242_valid_anagram/Solution.java ) | Easy | String, Hash_Table, Sorting | 2 | 99.01
1838+ | 0217 |[ Contains Duplicate] ( src/main/java/g0201_0300/s0217_contains_duplicate/Solution.java ) | Easy | Top_Interview_Questions, Array, Hash_Table, Sorting | 6 | 96.68
1839+
1840+ #### Day 12 Class and Object
1841+
1842+ | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
1843+ |-|-|-|-|-|-
1844+ | 1603 |[ Design Parking System] ( src/main/java/g1601_1700/s1603_design_parking_system/ParkingSystem.java ) | Easy | Design, Simulation, Counting | 8 | 76.16
1845+ | 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
1846+
18471847## Contributing
18481848Your ideas/fixes/algorithms are more than welcome!
18491849
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