Algorithms in C++

A repository containing all the resources i'm using to learn c++ and algorithms

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Number	Question	Tags	Level	URL	Platform	Date
47	Validate Binary Search Tree	Binary Search Tree, Binary Tree, DFS, Tree	Medium	Leetcode	Leetcode	October 28, 2023
46	Combination Sum	Arrays, Backtracking	Revisit	Leetcode	Leetcode	October 26, 2023
45	Binary Tree Level Order Traversal	BFS, Binary Tree, Tree	Medium	Leetcode	Leetcode	October 25, 2023
44	Subset Sums	Recursion	Medium	GFG	GFG	October 24, 2023
43	Lowest Common Ancestor of a Binary Search Tree	Binary Search Tree, Binary Tree, DFS, Tree	Medium	Leetcode	Leetcode	October 24, 2023
42	Diameter of Binary Tree	Binary Tree, DFS, Tree	Easy	Leetcode	Leetcode	October 16, 2023
41	Same Tree	BFS, Binary Tree, DFS, Tree	Easy	Leetcode	Leetcode	October 11, 2023
40	Sub-tree of Another Tree	DFS, Hash Table, Tree	Easy	Leetcode	Leetcode	October 11, 2023
39	Maximum Depth of Binary Tree	BFS, Binary Tree, DFS, Tree	Easy	Leetcode	Leetcode	October 9, 2023
38	Invert Binary Tree	BFS, Binary Tree, DFS, Tree	Easy	Leetcode	Leetcode	October 9, 2023
37	Intersection of Two Linked Lists	Hash Table, Linked List, Two Pointers	Easy	Leetcode	Leetcode	October 7, 2023
36	Add Two Numbers	Linked List, Recursion	Medium	Leetcode	Leetcode	September 16, 2023
35	Palindrome Linked List	Linked List, Stack, Two Pointers	Easy	Leetcode	Leetcode	September 18, 2023
34	Reorder List	Linked List, Recursion, Two Pointers	Medium	Leetcode	Leetcode	September 9, 2023
33	Reverse Linked List II	Linked List	Medium	Leetcode	Leetcode	September 7, 2023
32	Split Linked List in Parts	Linked List	Medium	Leetcode	Leetcode	September 6, 2023
31	Copy List with Random Pointer	Hash Table, Linked List	Medium	Leetcode	Leetcode	September 5, 2023
30	Delete Node in a Linked List	Linked List	Medium	Leetcode	Leetcode	September 4, 2023
29	Remove Nth node from back	Linked List, Two Pointers	Medium	N/A	N/A	September 3, 2023
28	Middle of Linked List	Linked List	Easy	N/A	Leetcode	September 3, 2023
27	Maximum Product Subarray	Arrays, Dynamic Programming	Medium	N/A	Leetcode	September 3, 2023
26	Merge Two Sorted Lists	Linked List, Recursion	Easy	Leetcode	Leetcode	August 30, 2023
25	Koko Eating Bananas	Arrays, Binary Search	Medium	N/A	Leetcode	August 27, 2023
24	Reverse Linked List	Linked List	Easy	N/A	Leetcode	August 23, 2023
23	Search in Rotated Sorted Array	Arrays, Binary Search	Medium	N/A	N/A	August 22, 2023
22	Find minimum in rotated sorted array	Arrays, Binary Search	Medium	N/A	N/A	N/A
21	Determine the Minimum Sum of a k-avoiding Array	Arrays, Hash Table	Medium	N/A	Leetcode	August 20, 2023
20	Car Fleet	Stack	Medium	N/A	Leetcode	August 19, 2023
19	Minimum Window Substring	Hash Table, Sliding Window, String	Hard	N/A	Leetcode	August 17, 2023
18	Longest Repeating Character Replacement	Sliding Window, String	Medium	N/A	Leetcode	N/A
17	Trapping Rainwater	Arrays, Two Pointers	Hard	N/A	Leetcode	N/A
16	Longest Sub-string Without Repeating Characters	Sliding Window, String	Medium	Leetcode	Leetcode	N/A
15	Three Sum	Arrays, Two Pointers	Medium	N/A	Leetcode	N/A
14	Valid Palindrome	Two Pointers, String	Easy	N/A	Leetcode	N/A
13	Buy and sell Stock	Arrays	Easy	Leetcode	Leetcode	N/A
12	Next Permutation	Arrays	Medium	Leetcode	Leetcode	August 5, 2023
11	Longest Consecutive Sequence	Arrays, Hash Table	Medium	Leetcode	Leetcode	August 9, 2023
10	Product of array except self	Arrays, Prefix Sum	Medium	N/A	Leetcode	N/A
9	Top K Elements	Arrays, Hash Table, Heap, Sorting	Medium	Leetcode	Leetcode	N/A
8	Set Matrix Zeros	Arrays	Medium	Leetcode	Leetcode	N/A
7	Pascal’s Triangle	Arrays, Dynamic Programming	Easy	N/A	Leetcode	N/A
6	Group Anagrams	Arrays	Medium	N/A	Leetcode	N/A
5	Two Sum	Arrays	Easy	N/A	Leetcode	N/A
4	Is Subsequence	Arrays	Easy	Leetcode	Leetcode	N/A
3	Array Concatenation	Arrays	Easy	N/A	Leetcode	N/A
2	Valid Anagram	Hash Table, Sorting, String	Easy	N/A	Leetcode	N/A
1	Contains Duplicate	Arrays, Hash Table, Sorting	Easy	N/A	Leetcode	N/A

References

• DSA Roadmap
• Hackerrank CPP
• LearnCPP