Blind 75

The classic curated list · 75 problems curated

alleasymediumhard

alltodoattemptedfailedsolved

75 problems

#	Title	Status	Difficulty	Topics	Accept
1	Two Sum	—	Easy	ArrayHash Table	56%
3	Longest Substring Without Repeating Characters	—	Medium	Hash TableStringSliding Window	37%
5	Longest Palindromic Substring	—	Medium	Two PointersStringDynamic Programming	36%
11	Container With Most Water	—	Medium	ArrayTwo PointersGreedy	58%
15	3Sum	—	Medium	ArrayTwo PointersSorting	37%
19	Remove Nth Node From End of List	—	Medium	Linked ListTwo Pointers	49%
20	Valid Parentheses	—	Easy	StringStack	42%
21	Merge Two Sorted Lists	—	Easy	Linked ListRecursion	67%
23	Merge k Sorted Lists	—	Hard	Linked ListDivide and ConquerHeap (Priority Queue)	56%
33	Search in Rotated Sorted Array	—	Medium	ArrayBinary Search	43%
39	Combination Sum	—	Medium	ArrayBacktracking	74%
48	Rotate Image	—	Medium	ArrayMathMatrix	78%
49	Group Anagrams	—	Medium	ArrayHash TableString	71%
53	Maximum Subarray	—	Medium	ArrayDivide and ConquerDynamic Programming	52%
54	Spiral Matrix	—	Medium	ArrayMatrixSimulation	54%
55	Jump Game	—	Medium	ArrayDynamic ProgrammingGreedy	39%
56	Merge Intervals	—	Medium	ArraySorting	49%
57	Insert Interval	—	Medium	Array	43%
62	Unique Paths	—	Medium	MathDynamic ProgrammingCombinatorics	66%
70	Climbing Stairs	—	Easy	MathDynamic ProgrammingMemoization	53%
73	Set Matrix Zeroes	—	Medium	ArrayHash TableMatrix	60%
76	Minimum Window Substring	—	Hard	Hash TableStringSliding Window	45%
79	Word Search	—	Medium	ArrayStringBacktracking	45%
91	Decode Ways	—	Medium	StringDynamic Programming	36%
98	Validate Binary Search Tree	—	Medium	TreeDepth-First SearchBinary Search Tree	34%
100	Same Tree	—	Easy	TreeDepth-First SearchBreadth-First Search	65%
102	Binary Tree Level Order Traversal	—	Medium	TreeBreadth-First SearchBinary Tree	70%
104	Maximum Depth of Binary Tree	—	Easy	TreeDepth-First SearchBreadth-First Search	77%
105	Construct Binary Tree from Preorder and Inorder Traversal	—	Medium	ArrayHash TableDivide and Conquer	67%
121	Best Time to Buy and Sell Stock	—	Easy	ArrayDynamic Programming	55%
124	Binary Tree Maximum Path Sum	—	Hard	Dynamic ProgrammingTreeDepth-First Search	41%
125	Valid Palindrome	—	Easy	Two PointersString	51%
128	Longest Consecutive Sequence	—	Medium	ArrayHash TableUnion Find	47%
133	Clone Graph	—	Medium	Hash TableDepth-First SearchBreadth-First Search	62%
139	Word Break	—	Medium	ArrayHash TableString	48%
141	Linked List Cycle	—	Easy	Hash TableLinked ListTwo Pointers	52%
143	Reorder List	—	Medium	Linked ListTwo PointersStack	62%
152	Maximum Product Subarray	—	Medium	ArrayDynamic Programming	35%
153	Find Minimum in Rotated Sorted Array	—	Medium	ArrayBinary Search	52%
190	Reverse Bits	—	Easy	Divide and ConquerBit Manipulation	63%
191	Number of 1 Bits	—	Easy	Divide and ConquerBit Manipulation	74%
198	House Robber	—	Medium	ArrayDynamic Programming	52%
200	Number of Islands	—	Medium	ArrayDepth-First SearchBreadth-First Search	62%
206	Reverse Linked List	—	Easy	Linked ListRecursion	79%
207	Course Schedule	—	Medium	Depth-First SearchBreadth-First SearchGraph	49%
208	Implement Trie (Prefix Tree)	—	Medium	Hash TableStringDesign	68%
211	Design Add and Search Words Data Structure	—	Medium	StringDepth-First SearchDesign	47%
212	Word Search II	—	Hard	ArrayStringBacktracking	37%
213	House Robber II	—	Medium	ArrayDynamic Programming	43%
217	Contains Duplicate	—	Easy	ArrayHash TableSorting	63%

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