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‎README.md

+21
Original file line numberDiff line numberDiff line change
@@ -36,6 +36,7 @@ JavaScript-based LeetCode algorithm problem solutions, regularly updated.
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| <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
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|-|-|-|-|-|-
39+
| 0189 |[Rotate Array](src/main/js/g0101_0200/s0189_rotate_array/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Two_Pointers, Big_O_Time_O(n)_Space_O(1) | 0 | 100.00
3940

4041
#### Day 3 Two Pointers
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@@ -79,6 +80,7 @@ JavaScript-based LeetCode algorithm problem solutions, regularly updated.
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| 0021 |[Merge Two Sorted Lists](src/main/js/g0001_0100/s0021_merge_two_sorted_lists/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(m+n)_Space_O(m+n) | 0 | 100.00
83+
| 0206 |[Reverse Linked List](src/main/js/g0201_0300/s0206_reverse_linked_list/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(N)_Space_O(1) | 0 | 100.00
8284

8385
#### Day 11 Recursion Backtracking
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@@ -91,6 +93,7 @@ JavaScript-based LeetCode algorithm problem solutions, regularly updated.
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|-|-|-|-|-|-
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| 0070 |[Climbing Stairs](src/main/js/g0001_0100/s0070_climbing_stairs/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Memoization, Big_O_Time_O(n)_Space_O(n) | 0 | 100.00
96+
| 0198 |[House Robber](src/main/js/g0101_0200/s0198_house_robber/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n) | 0 | 100.00
9497

9598
#### Day 13 Bit Manipulation
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@@ -140,6 +143,7 @@ JavaScript-based LeetCode algorithm problem solutions, regularly updated.
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| <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
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|-|-|-|-|-|-
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| 0200 |[Number of Islands](src/main/js/g0101_0200/s0200_number_of_islands/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Big_O_Time_O(M\*N)_Space_O(M\*N) | 62 | 90.80
143147

144148
#### Day 7 Breadth First Search Depth First Search
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@@ -413,6 +417,7 @@ JavaScript-based LeetCode algorithm problem solutions, regularly updated.
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| <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
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|-|-|-|-|-|-
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| 0198 |[House Robber](src/main/js/g0101_0200/s0198_house_robber/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n) | 0 | 100.00
416421

417422
#### Day 4
418423

@@ -692,6 +697,7 @@ JavaScript-based LeetCode algorithm problem solutions, regularly updated.
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| <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
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|-|-|-|-|-|-
700+
| 0200 |[Number of Islands](src/main/js/g0101_0200/s0200_number_of_islands/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Big_O_Time_O(M\*N)_Space_O(M\*N) | 62 | 90.80
695701

696702
#### Day 2 Matrix Related Problems
697703

@@ -827,6 +833,7 @@ JavaScript-based LeetCode algorithm problem solutions, regularly updated.
827833
| <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
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|-|-|-|-|-|-
829835
| 0021 |[Merge Two Sorted Lists](src/main/js/g0001_0100/s0021_merge_two_sorted_lists/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(m+n)_Space_O(m+n) | 0 | 100.00
836+
| 0206 |[Reverse Linked List](src/main/js/g0201_0300/s0206_reverse_linked_list/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(N)_Space_O(1) | 0 | 100.00
830837

831838
#### Day 4 Linked List
832839

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| 0200 |[Number of Islands](src/main/js/g0101_0200/s0200_number_of_islands/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Big_O_Time_O(M\*N)_Space_O(M\*N) | 62 | 90.80
864872

865873
#### Day 10 Dynamic Programming
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| <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
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| 0198 |[House Robber](src/main/js/g0101_0200/s0198_house_robber/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n) | 0 | 100.00
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964973
#### Day 13 Dynamic Programming
965974

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|-|-|-|-|-|-
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| 0121 |[Best Time to Buy and Sell Stock](src/main/js/g0101_0200/s0121_best_time_to_buy_and_sell_stock/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(N)_Space_O(1) | 1 | 97.34
10431052
| 0001 |[Two Sum](src/main/js/g0001_0100/s0001_two_sum/solution.js)| 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 | 89.15
1053+
| 0189 |[Rotate Array](src/main/js/g0101_0200/s0189_rotate_array/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Two_Pointers, Big_O_Time_O(n)_Space_O(1) | 0 | 100.00
10441054
| 0055 |[Jump Game](src/main/js/g0001_0100/s0055_jump_game/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Greedy, Big_O_Time_O(n)_Space_O(1) | 0 | 100.00
10451055
| 0075 |[Sort Colors](src/main/js/g0001_0100/s0075_sort_colors/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Big_O_Time_O(n)_Space_O(1) | 0 | 100.00
10461056
| 0041 |[First Missing Positive](src/main/js/g0001_0100/s0041_first_missing_positive/solution.js)| Hard | Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Big_O_Time_O(n)_Space_O(n) | 1 | 98.86
@@ -1057,6 +1067,7 @@ JavaScript-based LeetCode algorithm problem solutions, regularly updated.
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| <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
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| 0053 |[Maximum Subarray](src/main/js/g0001_0100/s0053_maximum_subarray/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Divide_and_Conquer, Big_O_Time_O(n)_Space_O(1) | 1 | 85.69
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| 0169 |[Majority Element](src/main/js/g0101_0200/s0169_majority_element/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Sorting, Counting, Divide_and_Conquer, Big_O_Time_O(n)_Space_O(1) | 0 | 100.00
10601071

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#### Udemy Sorting Algorithms
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| 0024 |[Swap Nodes in Pairs](src/main/js/g0001_0100/s0024_swap_nodes_in_pairs/solution.js)| Medium | Top_100_Liked_Questions, Linked_List, Recursion, Big_O_Time_O(n)_Space_O(1) | 1 | 100.00
10811092
| 0142 |[Linked List Cycle II](src/main/js/g0101_0200/s0142_linked_list_cycle_ii/solution.js)| Medium | Top_100_Liked_Questions, Hash_Table, Two_Pointers, Linked_List, Big_O_Time_O(N)_Space_O(1) | 58 | 92.76
10821093
| 0141 |[Linked List Cycle](src/main/js/g0101_0200/s0141_linked_list_cycle/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Two_Pointers, Linked_List, Big_O_Time_O(N)_Space_O(1) | 49 | 99.06
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| 0206 |[Reverse Linked List](src/main/js/g0201_0300/s0206_reverse_linked_list/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(N)_Space_O(1) | 0 | 100.00
10831095
| 0021 |[Merge Two Sorted Lists](src/main/js/g0001_0100/s0021_merge_two_sorted_lists/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(m+n)_Space_O(m+n) | 0 | 100.00
10841096
| 0160 |[Intersection of Two Linked Lists](src/main/js/g0101_0200/s0160_intersection_of_two_linked_lists/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Two_Pointers, Linked_List, Big_O_Time_O(M+N)_Space_O(1) | 68 | 93.67
10851097
| 0138 |[Copy List with Random Pointer](src/main/js/g0101_0200/s0138_copy_list_with_random_pointer/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Linked_List, Big_O_Time_O(N)_Space_O(N) | 43 | 97.07
@@ -1105,13 +1117,15 @@ JavaScript-based LeetCode algorithm problem solutions, regularly updated.
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| <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- --> | <!-- -->
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| 0200 |[Number of Islands](src/main/js/g0101_0200/s0200_number_of_islands/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Big_O_Time_O(M\*N)_Space_O(M\*N) | 62 | 90.80
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11091122
#### Udemy Dynamic Programming
11101123

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| 0139 |[Word Break](src/main/js/g0101_0200/s0139_word_break/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Dynamic_Programming, Trie, Memoization, Big_O_Time_O(M+max\*N)_Space_O(M+N+max) | 0 | 100.00
11141127
| 0152 |[Maximum Product Subarray](src/main/js/g0101_0200/s0152_maximum_product_subarray/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(N)_Space_O(1) | 0 | 100.00
1128+
| 0198 |[House Robber](src/main/js/g0101_0200/s0198_house_robber/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n) | 0 | 100.00
11151129
| 0070 |[Climbing Stairs](src/main/js/g0001_0100/s0070_climbing_stairs/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Memoization, Big_O_Time_O(n)_Space_O(n) | 0 | 100.00
11161130
| 0064 |[Minimum Path Sum](src/main/js/g0001_0100/s0064_minimum_path_sum/solution.js)| Medium | Top_100_Liked_Questions, Array, Dynamic_Programming, Matrix, Big_O_Time_O(m\*n)_Space_O(m\*n) | 3 | 83.07
11171131
| 0072 |[Edit Distance](src/main/js/g0001_0100/s0072_edit_distance/solution.js)| Medium | Top_100_Liked_Questions, String, Dynamic_Programming, Big_O_Time_O(n^2)_Space_O(n2) | 5 | 99.01
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| 0206 |[Reverse Linked List](src/main/js/g0201_0300/s0206_reverse_linked_list/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(N)_Space_O(1) | 0 | 100.00
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11891204
#### Day 9 Stack Queue
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| 0136 |[Single Number](src/main/js/g0101_0200/s0136_single_number/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, Big_O_Time_O(N)_Space_O(1) | 0 | 100.00
1247+
| 0169 |[Majority Element](src/main/js/g0101_0200/s0169_majority_element/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Sorting, Counting, Divide_and_Conquer, Big_O_Time_O(n)_Space_O(1) | 0 | 100.00
12321248
| 0015 |[3Sum](src/main/js/g0001_0100/s0015_3sum/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Big_O_Time_O(n\*log(n))_Space_O(n^2) | 31 | 91.92
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#### Day 2 Array
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13481364
| # | Title | Difficulty | Tag | Time, ms | Time, %
13491365
|------|----------------|-------------|-------------|----------|---------
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| 0206 |[Reverse Linked List](src/main/js/g0201_0300/s0206_reverse_linked_list/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, 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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| 0200 |[Number of Islands](src/main/js/g0101_0200/s0200_number_of_islands/solution.js)| 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, Big_O_Time_O(M\*N)_Space_O(M\*N) | 62 | 90.80
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| 0198 |[House Robber](src/main/js/g0101_0200/s0198_house_robber/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Algorithm_I_Day_12_Dynamic_Programming, Dynamic_Programming_I_Day_3, Level_2_Day_12_Dynamic_Programming, Udemy_Dynamic_Programming, Big_O_Time_O(n)_Space_O(n) | 0 | 100.00
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| 0189 |[Rotate Array](src/main/js/g0101_0200/s0189_rotate_array/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Two_Pointers, Algorithm_I_Day_2_Two_Pointers, Udemy_Arrays, Big_O_Time_O(n)_Space_O(1) | 0 | 100.00
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| 0169 |[Majority Element](src/main/js/g0101_0200/s0169_majority_element/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Sorting, Counting, Divide_and_Conquer, Data_Structure_II_Day_1_Array, Udemy_Famous_Algorithm, Big_O_Time_O(n)_Space_O(1) | 0 | 100.00
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| 0160 |[Intersection of Two Linked Lists](src/main/js/g0101_0200/s0160_intersection_of_two_linked_lists/solution.js)| Easy | Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Two_Pointers, Linked_List, Data_Structure_II_Day_11_Linked_List, Udemy_Linked_List, Big_O_Time_O(M+N)_Space_O(1) | 68 | 93.67
13511372
| 0155 |[Min Stack](src/main/js/g0101_0200/s0155_min_stack/solution.js)| Medium | Top_100_Liked_Questions, Top_Interview_Questions, Stack, Design, Data_Structure_II_Day_14_Stack_Queue, Programming_Skills_II_Day_18, Level_2_Day_16_Design, Udemy_Design, Big_O_Time_O(1)_Space_O(N) | 6 | 99.32
13521373
| 0153 |[Find Minimum in Rotated Sorted Array](src/main/js/g0101_0200/s0153_find_minimum_in_rotated_sorted_array/solution.js)| Medium | Top_100_Liked_Questions, Array, Binary_Search, Algorithm_II_Day_2_Binary_Search, Binary_Search_I_Day_12, Udemy_Binary_Search, Big_O_Time_O(log_N)_Space_O(log_N) | 0 | 100.00

‎src/main/js/g0101_0200/s0169_majority_element/readme.md

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169\. Majority Element
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Easy
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Given an array `nums` of size `n`, return _the majority element_.
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The majority element is the element that appears more than `⌊n / 2⌋` times. You may assume that the majority element always exists in the array.
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**Example 1:**
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**Input:** nums = [3,2,3]
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**Output:** 3
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**Example 2:**
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**Input:** nums = [2,2,1,1,1,2,2]
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**Output:** 2
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**Constraints:**
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* `n == nums.length`
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* <code>1 <= n <= 5 * 10<sup>4</sup></code>
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* <code>-10<sup>9</sup> <= nums[i] <= 10<sup>9</sup></code>
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**Follow-up:** Could you solve the problem in linear time and in `O(1)` space?

‎src/main/js/g0101_0200/s0169_majority_element/solution.js

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// #Easy #Top_100_Liked_Questions #Top_Interview_Questions #Array #Hash_Table #Sorting #Counting
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// #Divide_and_Conquer #Data_Structure_II_Day_1_Array #Udemy_Famous_Algorithm
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// #Big_O_Time_O(n)_Space_O(1) #2024_12_17_Time_0_ms_(100.00%)_Space_51.8_MB_(69.63%)
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/**
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* @param {number[]} nums
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* @return {number}
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*/
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var majorityElement = function(arr) {
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let count = 1;
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let majority = arr[0];
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// For Potential Majority Element
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for (let i = 1; i < arr.length; i++) {
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if (arr[i] === majority) {
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count++;
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} else if (count > 1) {
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count--;
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} else {
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majority = arr[i];
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}
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}
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// For Confirmation
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count = 0;
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for (const num of arr) {
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if (num === majority) {
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count++;
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}
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}
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if (count >= Math.floor(arr.length / 2) + 1) {
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return majority;
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} else {
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return -1;
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}
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};
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export { majorityElement }

‎src/main/js/g0101_0200/s0189_rotate_array/readme.md

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189\. Rotate Array
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Medium
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Given an array, rotate the array to the right by `k` steps, where `k` is non-negative.
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**Example 1:**
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**Input:** nums = [1,2,3,4,5,6,7], k = 3
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**Output:** [5,6,7,1,2,3,4]
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**Explanation:**
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rotate 1 steps to the right: [7,1,2,3,4,5,6]
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rotate 2 steps to the right: [6,7,1,2,3,4,5]
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rotate 3 steps to the right: [5,6,7,1,2,3,4]
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**Example 2:**
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**Input:** nums = [-1,-100,3,99], k = 2
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**Output:** [3,99,-1,-100]
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**Explanation:**
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rotate 1 steps to the right: [99,-1,-100,3]
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rotate 2 steps to the right: [3,99,-1,-100]
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**Constraints:**
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* <code>1 <= nums.length <= 10<sup>5</sup></code>
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* <code>-2<sup>31</sup> <= nums[i] <= 2<sup>31</sup> - 1</code>
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* <code>0 <= k <= 10<sup>5</sup></code>
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**Follow up:**
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* Try to come up with as many solutions as you can. There are at least **three** different ways to solve this problem.
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* Could you do it in-place with `O(1)` extra space?

‎src/main/js/g0101_0200/s0189_rotate_array/solution.js

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// #Medium #Top_100_Liked_Questions #Top_Interview_Questions #Array #Math #Two_Pointers
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// #Algorithm_I_Day_2_Two_Pointers #Udemy_Arrays #Big_O_Time_O(n)_Space_O(1)
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// #2024_12_17_Time_0_ms_(100.00%)_Space_60.8_MB_(38.22%)
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/**
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* @param {number[]} nums
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* @param {number} k
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* @return {void} Do not return anything, modify nums in-place instead.
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*/
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var reverse = function(nums, l, r) {
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while (l <= r) {
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let temp = nums[l];
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nums[l] = nums[r];
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nums[r] = temp;
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l++;
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r--;
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}
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};
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const rotate = function(nums, k) {
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const n = nums.length;
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const t = n - (k % n);
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reverse(nums, 0, t - 1);
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reverse(nums, t, n - 1);
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reverse(nums, 0, n - 1);
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};
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export { rotate }

‎src/main/js/g0101_0200/s0198_house_robber/readme.md

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198\. House Robber
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Medium
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You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed, the only constraint stopping you from robbing each of them is that adjacent houses have security systems connected and **it will automatically contact the police if two adjacent houses were broken into on the same night**.
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Given an integer array `nums` representing the amount of money of each house, return _the maximum amount of money you can rob tonight **without alerting the police**_.
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**Example 1:**
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**Input:** nums = [1,2,3,1]
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**Output:** 4
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**Explanation:** Rob house 1 (money = 1) and then rob house 3 (money = 3). Total amount you can rob = 1 + 3 = 4.
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**Example 2:**
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**Input:** nums = [2,7,9,3,1]
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**Output:** 12
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**Explanation:** Rob house 1 (money = 2), rob house 3 (money = 9) and rob house 5 (money = 1). Total amount you can rob = 2 + 9 + 1 = 12.
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**Constraints:**
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* `1 <= nums.length <= 100`
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* `0 <= nums[i] <= 400`

‎src/main/js/g0101_0200/s0198_house_robber/solution.js

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// #Medium #Top_100_Liked_Questions #Top_Interview_Questions #Array #Dynamic_Programming
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// #Algorithm_I_Day_12_Dynamic_Programming #Dynamic_Programming_I_Day_3
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// #Level_2_Day_12_Dynamic_Programming #Udemy_Dynamic_Programming #Big_O_Time_O(n)_Space_O(n)
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// #2024_12_17_Time_0_ms_(100.00%)_Space_49_MB_(33.76%)
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/**
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* @param {number[]} nums
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* @return {number}
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*/
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var rob = function(nums) {
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if (nums.length === 0) {
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return 0;
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}
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if (nums.length === 1) {
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return nums[0];
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}
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if (nums.length === 2) {
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return Math.max(nums[0], nums[1]);
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}
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const profit = new Array(nums.length);
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profit[0] = nums[0];
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profit[1] = Math.max(nums[0], nums[1]);
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for (let i = 2; i < nums.length; i++) {
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profit[i] = Math.max(profit[i - 1], nums[i] + profit[i - 2]);
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}
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return profit[nums.length - 1];
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};
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export { rob }

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