Coding Problems

A repository for doing practice on coding interview problems from the course: 50 popular coding interview problems.

Problems

Problem	Dificulty	Solution
Sort List	Medium	Link
Valid Parentheses	Easy	Link
Find Minimum in Rotated Sorted Array	Medium	Link
Binary Tree Preorder Traversal	Easy	Link
Binary Tree Level Order Traversal	Medium	Link
Implement strStr()	Hard	Link
Merge Two Sorted Lists	Easy	Link
Tuple with Same Product	Medium	Link
Shortest Palindrome	Hard	Link
Reverse Linked List	Easy	Link
Binary Tree Inorder Traversal	Easy	Link
Minimum Path Sum	Medium	Link
Coin Change	Medium	Link
Find pair that sum up to k (two sum)	Easy	Link
Word Ladder	Hard	Link
Edit Distance	Hard	Link
Longest Common Subsequence	Medium	Link
Delete Node in a BST	Medium	Link
Maximum Subarray	Medium	Link
Unique Paths II	Medium	Link
Subarray Sum Equals K	Medium	Link
Longest Palindrome	Easy	Link
Climbing Stairs	Easy	Link
Jump Game	Medium	Link
Remove K Digits	Medium	Link
Remove Duplicates from Sorted Array	Easy	Link
Binary Tree Postorder Traversal	Easy	Link
Product of Array Except Self	Medium	Link
Add Two Numbers	Medium	Link
Min Cost Climbing Stairs	Easy	Link
Longest Substring Without Repeating Characters	Medium	Link
Find the Duplicate Number	Medium	Link
Longest Consecutive Sequence	Medium	Link
Binary Tree Maximum Path Sum	Hard	Link
N-Queens	Hard	Link
Validate Binary Search Tree	Medium	Link
Longest Increasing Subsequence	Medium	Link
Merge Intervals	Medium	Link
Lowest Common Ancestor of a Binary Tree	Medium	Link
Palindrome Linked List	Easy	Link
Word Search	Medium	Link
Balanced Binary Tree	Easy	Link
Flatten Binary Tree to Linked List	Medium	Link
Two Sum II	Medium	Link
Distinct Subsequences	Hard	Link
Invert Binary Tree	Easy	Link
Permutations	Medium	Link
Find Peak Element	Medium	Link
Longest Palindromic Substring	Medium	Link
Decode Ways	Medium	Link
Insert Interval	Medium	Link

Name		Name	Last commit message	Last commit date
Latest commit History 94 Commits
.vscode		.vscode
102.binary-tree-level-order-traversal		102.binary-tree-level-order-traversal
110.balanced-binary-tree		110.balanced-binary-tree
114.flatten-binary-tree-to-linked-list		114.flatten-binary-tree-to-linked-list
1143.longest-common-subsequence		1143.longest-common-subsequence
115.distinct-subsequences		115.distinct-subsequences
123.binary-tree-maximum-path-sum		123.binary-tree-maximum-path-sum
127.word-ladder		127.word-ladder
128.longest-consecutive-sequence		128.longest-consecutive-sequence
148.sort-list		148.sort-list
153.find-minimum-in-rotated-sorted-array		153.find-minimum-in-rotated-sorted-array
162.find-peak-element		162.find-peak-element
1726.tuple-with-same-product		1726.tuple-with-same-product
1971.find-if-path-exists-in-graph		1971.find-if-path-exists-in-graph
2.add-two-numbers		2.add-two-numbers
20.valid-parentheses		20.valid-parentheses
206.reverse-linked-list		206.reverse-linked-list
21.merge-two-sorted-lists		21.merge-two-sorted-lists
214.shortest-palindrome-path		214.shortest-palindrome-path
226.invert-binary-tree		226.invert-binary-tree
234.palindrome-linked-list		234.palindrome-linked-list
236.lowest-common-ancestor-of-binary-tree		236.lowest-common-ancestor-of-binary-tree
238.product-of-array-except-self		238.product-of-array-except-self
25.unique-paths-ii		25.unique-paths-ii
26.remove-duplicates-from-sorted-array		26.remove-duplicates-from-sorted-array
28.implement-str-str		28.implement-str-str
287.find-duplicate-number		287.find-duplicate-number
3.longest-substring-without-repeating-chars		3.longest-substring-without-repeating-chars
300.longest-increasing-subsequence		300.longest-increasing-subsequence
322.coin-change		322.coin-change
35.remove-node-from-bst		35.remove-node-from-bst
402.remove-k-digits		402.remove-k-digits
409.longest-palindrome		409.longest-palindrome
46.permutations		46.permutations
51.n-queens		51.n-queens
53.maximum-subarray		53.maximum-subarray
55.jump-game		55.jump-game
56.merge-intervals		56.merge-intervals
560.subarray-sum-equals-k		560.subarray-sum-equals-k
57.insert-interval		57.insert-interval
6128.best-poker-hand		6128.best-poker-hand
6129.number-of-zero-filled-subarrays		6129.number-of-zero-filled-subarrays
64.minimum-path-sum		64.minimum-path-sum
70.climbing-stairs		70.climbing-stairs
72.edit-distance		72.edit-distance
76.minimum-window-substring		76.minimum-window-substring
79.word-search		79.word-search
84.largest-rectangle-in-histogram		84.largest-rectangle-in-histogram
91.decode-ways		91.decode-ways
98.validate-binary-search-tree		98.validate-binary-search-tree
binary-tree-traversal		binary-tree-traversal
codility_problems		codility_problems
coding-problem		coding-problem
connected-graph-count		connected-graph-count
course-schedule		course-schedule
depth-first-print		depth-first-print
gas_station		gas_station
generate_parentheses		generate_parentheses
graph-breadth-first-print		graph-breadth-first-print
island-count		island-count
knapsack		knapsack
kth-permutation		kth-permutation
largest-component		largest-component
minimum-island		minimum-island
shortest-path		shortest-path
two-sum-i		two-sum-i
two-sum-ii		two-sum-ii
vending-machine		vending-machine
README.md		README.md

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