questions_list.md

List of Questions & Solutions

A full list of the topics and questions covered in this repo (so far). Solutions counter - 46/75

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Arrays & Hashing

Contains Duplicate	contains_duplicate.py
Valid Anagram	valid_anagram.py
Two Sum	two_sum.py
Group Anagrams	group_anagrams.py
Top K Frequent Elements	top_k_frequent_elements.py
Product of Array Except Self	product_of_array_except_self.py
Valid Sudoku	valid_sudoku.py
Encode & Decode Strings	encode_decode_strings.py
Longest Consecutive Sequence	longest_consecutive_sequence.py

Two Pointers

Valid Palindrome	valid_palindrome.py
Two Sum II (Input Array Sorted)	two_sum_ii_input_sorted.py
Three Sum	three_sum.py
Container with Most Water	container_with_most_water.py
Trapping Rain Water	trapping_rain_water.py

Sliding Window

Best time to Buy and Sell Stock	best_buy_sell_stock.py
Longest Substring w/o Repeating Characters	longest_substr_without_repeating_chars.py
Longest Repeating Character Replacement	longest_repeating_character_replacement.py
Permuatation in String	permutation_in_strings.py
Minimum Window Substring	minimum_window_substring.py
Sliding Window Maximum	sliding_window_maximum.py

Stack

Valid Parentheses	valid_parentheses.py

Binary Search

Find Minimum in Rotated Sorted Array	min_in_rotated_array.py
Search in Rotated Sorted Array	search_in_rotated_array.py

Linked Lists

Reverse Linked List	reverse_linked_list.py
Merge Two Sorted Lists	merge_two_sorted_lists.py
Remove Nth Node From End of List	remove_nth_node_from_end_of_list.py
Linked List Cycle	linked_list_cycle.py
Merge K Sorted Lists	merge_k_sorted_lists.py

Trees

Invert Binary Tree	invert_binary_tree.py
Maximum Depth of Binary Tree	max_depth_of_binary_tree.py
Same Tree	same_tree.py
Subtree of Another Tree	subtree_of_another_tree.py
Lowest Common Ancestor of a Binary Tree	lowest_common_ancestor_of_bst.py
Binary Tree Level Order Traversal	binary_tree_level_order_traversal.py
Validate Binary Search Tree	valid_bst.py

Backtracking

Combination Sum	combination_sum.py
Word Search	word_search.py

Tries

Implement Trie (Prefix Tree)	implement_trie.py
Add and Search Word - Data Structure Design	add_search_word.py
Word Search II	word_search_ii.py

1-D Dynamic Programming

Climbing Stairs	climbing_stairs.py
House Robber	house_robber.py
House Robber II	house_robber_ii.py
Longest Palindromic Substring	longest_palindromic_substring.py
Palindromic Substrings	palindromic_substrings.py
Decode Ways	decode_ways.py
Coin Change	coin_change.py
Maximum Product Subarray	max_product_subarray.py
Word Break	word_break.py
Longest Increasing Subsequence	longest_increasing_subsequence.py

2-D Dynamic Programming

Unique Paths	unique_paths.py
Longest Common Subsequence	longest_common_subsequence.py

Greedy

Maximum Subarray	maximum_subarray.py
Jump Game	jump_game.py

Intervals

Insert Interval	insert_interval.py
Merge Intervals	merge_intervals.py

Math & Geometry

Rotate Image	rotate_image.py
Spiral Matrix	spiral_matrix.py

Bit Manipulation

Number of 1 Bits	number_of_1_bits.py
Counting Bits	counting_bits.py
Reverse Bits	reverse_bits.py
Missing Number	missing_number.py