題庫

共 810 道題目含解題說明

#	題目	難度	Rating	Topics
52	N-Queens II	Hard	1843	backtracking
53	Maximum Subarray	Medium	1409	arraydynamic-programmingdivide-and-conquer
54	Spiral Matrix	Medium	1524	arraymatrixsimulation
55	Jump Game	Medium	1565	arraydynamic-programminggreedy
56	Merge Intervals	Medium	1551	arraysorting
57	Insert Interval	Medium	1541	array
58	Length of Last Word	Easy	1156	string
59	Spiral Matrix II	Medium	—	arraymatrixsimulation
60	Permutation Sequence	Hard	1953	mathrecursion
61	Rotate List	Medium	1558	linked-listtwo-pointers
62	Unique Paths	Medium	1383	mathdynamic-programmingcombinatorics
63	Unique Paths II	Medium	1400	arraydynamic-programmingmatrix
64	Minimum Path Sum	Medium	1444	arraydynamic-programmingmatrix
65	Valid Number	Hard	1892	string
66	Plus One	Easy	1151	arraymath
67	Add Binary	Easy	1160	mathstringbit-manipulation+1
68	Text Justification	Hard	1657	arraystringsimulation
69	Sqrt(x)	Easy	1178	mathbinary-search
70	Climbing Stairs	Easy	1232	mathdynamic-programmingmemoization
71	Simplify Path	Medium	1532	stringstack
72	Edit Distance	Medium	1703	stringdynamic-programming
73	Set Matrix Zeroes	Medium	1390	arrayhash-tablematrix
74	Search a 2D Matrix	Medium	1478	arraybinary-searchmatrix
75	Sort Colors	Medium	1381	arraytwo-pointerssorting
76	Minimum Window Substring	Hard	1890	hash-tablestringsliding-window
77	Combinations	Medium	1483	backtracking
78	Subsets	Medium	1416	arraybacktrackingbit-manipulation
79	Word Search	Medium	1700	arraystringbacktracking+1
80	Remove Duplicates from Sorted Array II	Medium	1381	arraytwo-pointers
81	Search in Rotated Sorted Array II	Medium	—	arraybinary-search
82	Remove Duplicates from Sorted List II	Medium	1509	linked-listtwo-pointers
83	Remove Duplicates from Sorted List	Easy	1169	linked-list
84	Largest Rectangle in Histogram	Hard	1949	arraystackmonotonic-stack
85	Maximal Rectangle	Hard	2188	arraydynamic-programmingstack+2
86	Partition List	Medium	1519	linked-listtwo-pointers
87	Scramble String	Hard	2264	stringdynamic-programming
88	Merge Sorted Array	Easy	1165	arraytwo-pointerssorting
90	Subsets II	Medium	1517	arraybacktrackingbit-manipulation
91	Decode Ways	Medium	1635	stringdynamic-programming
92	Reverse Linked List II	Medium	1559	linked-list
93	Restore IP Addresses	Medium	1627	backtrackingstring
94	Binary Tree Inorder Traversal	Easy	1250	stacktreedepth-first-search+1
95	Unique Binary Search Trees II	Medium	—	dynamic-programmingbacktrackingtree+2
96	Unique Binary Search Trees	Medium	—	mathdynamic-programmingtree+2
97	Interleaving String	Medium	1785	stringdynamic-programming
98	Validate Binary Search Tree	Medium	1490	treedepth-first-searchbinary-search-tree+1
99	Recover Binary Search Tree	Medium	—	treedepth-first-searchbinary-search-tree+1
100	Same Tree	Easy	1176	treedepth-first-searchbreadth-first-search+1
101	Symmetric Tree	Easy	1200	treedepth-first-searchbreadth-first-search+1
102	Binary Tree Level Order Traversal	Medium	1308	treebreadth-first-searchbinary-tree

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題庫

共 810 道題目含解題說明

All Easy Medium Hard

#	題目	難度	Rating	Topics
52	N-Queens II	Hard	1843	backtracking
53	Maximum Subarray	Medium	1409	arraydynamic-programmingdivide-and-conquer
54	Spiral Matrix	Medium	1524	arraymatrixsimulation
55	Jump Game	Medium	1565	arraydynamic-programminggreedy
56	Merge Intervals	Medium	1551	arraysorting
57	Insert Interval	Medium	1541	array
58	Length of Last Word	Easy	1156	string
59	Spiral Matrix II	Medium	—	arraymatrixsimulation
60	Permutation Sequence	Hard	1953	mathrecursion
61	Rotate List	Medium	1558	linked-listtwo-pointers
62	Unique Paths	Medium	1383	mathdynamic-programmingcombinatorics
63	Unique Paths II	Medium	1400	arraydynamic-programmingmatrix
64	Minimum Path Sum	Medium	1444	arraydynamic-programmingmatrix
65	Valid Number	Hard	1892	string
66	Plus One	Easy	1151	arraymath
67	Add Binary	Easy	1160	mathstringbit-manipulation+1
68	Text Justification	Hard	1657	arraystringsimulation
69	Sqrt(x)	Easy	1178	mathbinary-search
70	Climbing Stairs	Easy	1232	mathdynamic-programmingmemoization
71	Simplify Path	Medium	1532	stringstack
72	Edit Distance	Medium	1703	stringdynamic-programming
73	Set Matrix Zeroes	Medium	1390	arrayhash-tablematrix
74	Search a 2D Matrix	Medium	1478	arraybinary-searchmatrix
75	Sort Colors	Medium	1381	arraytwo-pointerssorting
76	Minimum Window Substring	Hard	1890	hash-tablestringsliding-window
77	Combinations	Medium	1483	backtracking
78	Subsets	Medium	1416	arraybacktrackingbit-manipulation
79	Word Search	Medium	1700	arraystringbacktracking+1
80	Remove Duplicates from Sorted Array II	Medium	1381	arraytwo-pointers
81	Search in Rotated Sorted Array II	Medium	—	arraybinary-search
82	Remove Duplicates from Sorted List II	Medium	1509	linked-listtwo-pointers
83	Remove Duplicates from Sorted List	Easy	1169	linked-list
84	Largest Rectangle in Histogram	Hard	1949	arraystackmonotonic-stack
85	Maximal Rectangle	Hard	2188	arraydynamic-programmingstack+2
86	Partition List	Medium	1519	linked-listtwo-pointers
87	Scramble String	Hard	2264	stringdynamic-programming
88	Merge Sorted Array	Easy	1165	arraytwo-pointerssorting
90	Subsets II	Medium	1517	arraybacktrackingbit-manipulation
91	Decode Ways	Medium	1635	stringdynamic-programming
92	Reverse Linked List II	Medium	1559	linked-list
93	Restore IP Addresses	Medium	1627	backtrackingstring
94	Binary Tree Inorder Traversal	Easy	1250	stacktreedepth-first-search+1
95	Unique Binary Search Trees II	Medium	—	dynamic-programmingbacktrackingtree+2
96	Unique Binary Search Trees	Medium	—	mathdynamic-programmingtree+2
97	Interleaving String	Medium	1785	stringdynamic-programming
98	Validate Binary Search Tree	Medium	1490	treedepth-first-searchbinary-search-tree+1
99	Recover Binary Search Tree	Medium	—	treedepth-first-searchbinary-search-tree+1
100	Same Tree	Easy	1176	treedepth-first-searchbreadth-first-search+1
101	Symmetric Tree	Easy	1200	treedepth-first-searchbreadth-first-search+1
102	Binary Tree Level Order Traversal	Medium	1308	treebreadth-first-searchbinary-tree

第 2 頁，共 17 頁

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