題庫

共 489 道題目含解題說明

#	題目	難度	Rating	Topics
2	Add Two Numbers	Medium	1395	linked-listmathrecursion
3	Longest Substring Without Repeating Characters	Medium	1533	hash-tablestringsliding-window
5	Longest Palindromic Substring	Medium	1581	two-pointersstringdynamic-programming
6	Zigzag Conversion	Medium	1568	string
7	Reverse Integer	Medium	1413	math
8	String to Integer (atoi)	Medium	1545	string
11	Container With Most Water	Medium	1704	arraytwo-pointersgreedy
12	Integer to Roman	Medium	1433	hash-tablemathstring
15	3Sum	Medium	1711	arraytwo-pointerssorting
16	3Sum Closest	Medium	1502	arraytwo-pointerssorting
17	Letter Combinations of a Phone Number	Medium	1460	hash-tablestringbacktracking
18	4Sum	Medium	1639	arraytwo-pointerssorting
19	Remove Nth Node From End of List	Medium	1474	linked-listtwo-pointers
22	Generate Parentheses	Medium	1648	stringdynamic-programmingbacktracking
24	Swap Nodes in Pairs	Medium	1408	linked-listrecursion
29	Divide Two Integers	Medium	1645	mathbit-manipulation
31	Next Permutation	Medium	1560	arraytwo-pointers
33	Search in Rotated Sorted Array	Medium	1625	arraybinary-search
34	Find First and Last Position of Element in Sorted Array	Medium	1483	arraybinary-search
36	Valid Sudoku	Medium	1422	arrayhash-tablematrix
39	Combination Sum	Medium	1469	arraybacktracking
40	Combination Sum II	Medium	1562	arraybacktracking
43	Multiply Strings	Medium	1499	mathstringsimulation
45	Jump Game II	Medium	1618	arraydynamic-programminggreedy
46	Permutations	Medium	1519	arraybacktracking
47	Permutations II	Medium	1574	arraybacktracking
48	Rotate Image	Medium	1407	arraymathmatrix
49	Group Anagrams	Medium	1474	arrayhash-tablestring+1
50	Pow(x, n)	Medium	1460	mathrecursion
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
59	Spiral Matrix II	Medium	—	arraymatrixsimulation
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
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
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

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題庫

共 489 道題目含解題說明

All Easy Medium Hard

#	題目	難度	Rating	Topics
2	Add Two Numbers	Medium	1395	linked-listmathrecursion
3	Longest Substring Without Repeating Characters	Medium	1533	hash-tablestringsliding-window
5	Longest Palindromic Substring	Medium	1581	two-pointersstringdynamic-programming
6	Zigzag Conversion	Medium	1568	string
7	Reverse Integer	Medium	1413	math
8	String to Integer (atoi)	Medium	1545	string
11	Container With Most Water	Medium	1704	arraytwo-pointersgreedy
12	Integer to Roman	Medium	1433	hash-tablemathstring
15	3Sum	Medium	1711	arraytwo-pointerssorting
16	3Sum Closest	Medium	1502	arraytwo-pointerssorting
17	Letter Combinations of a Phone Number	Medium	1460	hash-tablestringbacktracking
18	4Sum	Medium	1639	arraytwo-pointerssorting
19	Remove Nth Node From End of List	Medium	1474	linked-listtwo-pointers
22	Generate Parentheses	Medium	1648	stringdynamic-programmingbacktracking
24	Swap Nodes in Pairs	Medium	1408	linked-listrecursion
29	Divide Two Integers	Medium	1645	mathbit-manipulation
31	Next Permutation	Medium	1560	arraytwo-pointers
33	Search in Rotated Sorted Array	Medium	1625	arraybinary-search
34	Find First and Last Position of Element in Sorted Array	Medium	1483	arraybinary-search
36	Valid Sudoku	Medium	1422	arrayhash-tablematrix
39	Combination Sum	Medium	1469	arraybacktracking
40	Combination Sum II	Medium	1562	arraybacktracking
43	Multiply Strings	Medium	1499	mathstringsimulation
45	Jump Game II	Medium	1618	arraydynamic-programminggreedy
46	Permutations	Medium	1519	arraybacktracking
47	Permutations II	Medium	1574	arraybacktracking
48	Rotate Image	Medium	1407	arraymathmatrix
49	Group Anagrams	Medium	1474	arrayhash-tablestring+1
50	Pow(x, n)	Medium	1460	mathrecursion
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
59	Spiral Matrix II	Medium	—	arraymatrixsimulation
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
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
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

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