Problem set

Problems

Every problem links to LeetCode. Solve it there, then log how it went here.

Showing 1 to 50 of 1944

#ProblemDifficultyTagsStatusLog
1 Two Sum Easy Array, Hash Table Not started Log
3 Longest Substring Without Repeating Characters Medium Hash Table, String, Sliding Window Not started Log
4 Median of Two Sorted Arrays Hard Array, Binary Search, Divide and Conquer Not started Log
11 Container With Most Water Medium Greedy, Array, Two Pointers Not started Log
14 Longest Common Prefix Easy Trie, Array, String Not started Log
15 3Sum Medium Array, Two Pointers, Sorting Not started Log
16 3Sum Closest Medium Array, Two Pointers, Sorting Not started Log
18 4Sum Medium Array, Two Pointers, Sorting Not started Log
23 Merge k Sorted Lists Hard Linked List, Divide and Conquer, Heap (Priority Queue) +2 Not started Log
26 Remove Duplicates from Sorted Array Easy Array, Two Pointers Not started Log
27 Remove Element Easy Array, Two Pointers Not started Log
31 Next Permutation Medium Array, Two Pointers Not started Log
33 Search in Rotated Sorted Array Medium Array, Binary Search Not started Log
34 Find First and Last Position of Element in Sorted Array Medium Array, Binary Search Not started Log
35 Search Insert Position Easy Array, Binary Search Not started Log
36 Valid Sudoku Medium Array, Hash Table, Matrix Not started Log
37 Sudoku Solver Hard Array, Hash Table, Backtracking +3 Not started Log
39 Combination Sum Medium Array, Backtracking Not started Log
40 Combination Sum II Medium Array, Backtracking Not started Log
41 First Missing Positive Hard Array, Hash Table Not started Log
42 Trapping Rain Water Hard Stack, Array, Two Pointers +2 Not started Log
45 Jump Game II Medium Greedy, Array, Dynamic Programming Not started Log
46 Permutations Medium Array, Backtracking Not started Log
47 Permutations II Medium Array, Backtracking, Sorting Not started Log
48 Rotate Image Medium Array, Math, Matrix Not started Log
49 Group Anagrams Medium Array, Hash Table, String +1 Not started Log
50 Pow(x, n) Medium Recursion, Math Not started Log
51 N-Queens Hard Array, Backtracking, Algorithm X Not started Log
53 Maximum Subarray Medium Array, Divide and Conquer, Dynamic Programming Not started Log
54 Spiral Matrix Medium Array, Matrix, Simulation Not started Log
55 Jump Game Medium Greedy, Array, Dynamic Programming Not started Log
56 Merge Intervals Medium Array, Sorting, Quick Sort Not started Log
57 Insert Interval Medium Array Not started Log
59 Spiral Matrix II Medium Array, Matrix, Simulation Not started Log
63 Unique Paths II Medium Array, Dynamic Programming, Matrix Not started Log
64 Minimum Path Sum Medium Array, Dynamic Programming, Matrix Not started Log
66 Plus One Easy Array, Math Not started Log
68 Text Justification Hard Array, String, Simulation Not started Log
70 Climbing Stairs Easy Memoization, Math, Dynamic Programming Not started Log
72 Edit Distance Medium String, Dynamic Programming Not started Log
73 Set Matrix Zeroes Medium Array, Hash Table, Matrix Not started Log
74 Search a 2D Matrix Medium Array, Binary Search, Matrix Not started Log
75 Sort Colors Medium Array, Two Pointers, Bubble Sort +2 Not started Log
76 Minimum Window Substring Hard Hash Table, String, Sliding Window Not started Log
78 Subsets Medium Bit Manipulation, Array, Backtracking Not started Log
79 Word Search Medium Depth-First Search, Array, String +2 Not started Log
80 Remove Duplicates from Sorted Array II Medium Array, Two Pointers Not started Log
81 Search in Rotated Sorted Array II Medium Array, Binary Search Not started Log
84 Largest Rectangle in Histogram Hard Stack, Array, Monotonic Stack +1 Not started Log
85 Maximal Rectangle Hard Stack, Array, Dynamic Programming +2 Not started Log
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