| 1-60 |
61-100 |
101-191 |
| 1. Two sum |
61. Rotate List |
121. Best Time to Buy and Sell Stock |
| 2. Add Two Numbers |
62. Unique Paths |
122. Best Time to Buy and Sell Stock II |
| 3. Longest Substring Without Repeating Characters |
63. Unique Paths II |
123. Best Time to Buy and Sell Stock III |
| 4. Median of Two Sorted Arrays |
64. Minimum Path Sum | 124. Binary Tree Maximum Path Sum |
| 5. Longest Palindromic Substring |
65. Valid Number |
125. Valid Palindrome |
| 6. ZigZag Conversion |
66. Plus One |
|
| 7. Reverse Integer |
67. Add Binary |
127. Word Ladder |
| 8. String to Integer (atoi) |
68. Text Justification |
128. Longest Consecutive Sequence |
| 9. Palindrome Number |
69. Sqrt(x) |
129. Sum Root to Leaf Numbers |
| 10. Regular Expression Matching |
70. Climbing Stairs |
130. Surrounded Regions |
| 11. Container With Most Water |
71. Simplify Path |
131. Palindrome Partitioning |
| 12. Integer to Roman |
72. Edit Distance |
132. Palindrome Partitioning II |
| 13. Roman to Integer |
73. Set Matrix Zeroes |
133. Clone Graph |
| 14. Longest Common Prefix |
74. Search a 2D Matrix |
134. Gas Station |
| 15. 3Sum |
75. Sort Colors |
135. Candy |
| 16. 3Sum Closest |
76. Minimum Window Substring |
136. Single Number |
| 17. Letter Combinations of a Phone Number |
77. Combinations |
137. Single Number II |
| 18. 4Sum |
78. Subsets |
138. Copy List with Random Pointer |
| 19. Remove Nth Node From End of List |
79. Word Search |
139. Word Break |
| 20. Valid Parentheses |
80. Remove Duplicates from Sorted Array II |
140. Word Break II |
| 21. Merge Two Sorted Lists |
81. Search in Rotated Sorted Array II |
141. Linked List Cycle |
| 22. Generate Parentheses |
82. Remove Duplicates from Sorted List II |
142. Linked List Cycle II |
| 23. Merge k Sorted Lists |
83. Remove Duplicates from Sorted List |
143. Reorder List |
| 24. Swap Nodes in Pairs |
84. Largest Rectangle in Histogram |
144. Binary Tree Preorder Traversal |
| 25. Reverse Nodes in k-Group |
85. Maximal Rectangle |
145. Binary Tree Postorder Traversal |
| 26. Remove Duplicates from Sorted Array |
86. Partition List |
146. LRU Cache |
| 27. Remove Element |
87. Scramble String |
147. Insertion Sort List |
| 28. Implement strStr() |
88. Merge Sorted Array |
148. Sort List |
| 29. Divide Two Integers |
89. Gray Code |
150. Evaluate Reverse Polish Notation |
| 30. Substring with Concatenation of All Words |
90. Subsets II |
151. Reverse Words in a String |
| 31. Next Permutation |
91. Decode Ways |
152. Maximum Product Subarray |
| 32. Longest Valid Parentheses |
92. Reverse Linked List II |
153. Find Minimum in Rotated Sorted Array |
| 33. Search in Rotated Sorted Array |
93. Restore IP Addresses |
154. Find Minimum in Rotated Sorted Array II |
| 34. Search for a Range |
94. Binary Tree Inorder Traversal |
155. Min Stack |
| 35. Search Insert Position |
95. Unique Binary Search Trees II |
160. Intersection of Two Linked Lists |
| 36. Valid Sudoku |
96. Unique Binary Search Trees |
162. Find Peak Element |
| 37. Sudoku Solver |
97. Interleaving String |
164. Maximum Gap |
| 38. Count and Say |
98. Validate Binary Search Tree |
168. Excel Sheet Column Title |
| 39. Combination Sum |
99. Recover Binary Search Tree |
169. Majority Element |
| 40. Combination Sum II |
100. Same Tree |
171. Excel Sheet Column Number |
| 41. First Missing Positive |
101. Symmetric Tree |
172. Factorial Trailing Zeroes |
| 42. Trapping Rain Water |
102. Binary Tree Level Order Traversal |
173. Binary Search Tree Iterator |
| 43. Multiply Strings |
103. Binary Tree Zigzag Level Order Traversal |
174. Dungeon Game |
| 44. Wildcard Matching |
104. Maximum Depth of Binary Tree |
179. Largest Number |
| 45. Jump Game II |
105. Construct Binary Tree from Preorder and Inorder Traversal |
187. Repeated DNA Sequences |
| 46. Permutations |
106. Construct Binary Tree from Inorder and Postorder Traversal |
|
| 47. Permutations II |
107. Binary Tree Level Order Traversal II |
188. Best Time to Buy and Sell Stock IV |
| 48. Rotate Image |
108. Convert Sorted Array to Binary Search Tree |
|
| 49. Anagrams |
109. Convert Sorted List to Binary Search Tree |
|
| 50. Pow(x, n) |
110. Balanced Binary Tree |
|
| 51. N-Queens |
111. Minimum Depth of Binary Tree |
|
| 52. N-Queens II |
112. Path Sum |
|
| 53. Maximum Subarray |
113. Path Sum II |
|
| 54. Spiral Matrix |
114. Flatten Binary Tree to Linked List |
|
| 55. Jump Game |
115. Distinct Subsequences |
|
| 56. Merge Intervals |
116. Populating Next Right Pointers in Each Node |
|
| 57. Insert Interval |
117. Populating Next Right Pointers in Each Node II |
|
| 58. Length of Last Word |
118. Pascal's Triangle |
|
| 59. Spiral Matrix II |
119. Pascal's Triangle II |
|
| 60. Permutation Sequence |
120. Triangle |
|
