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:zap: Leetcode Solutions

🔥 Leetcode 🔥

Travis Build Maintainability TestCoverage Insight.io PRs Welcome code style: prettier

Practice make Perfect

  • 🎉 Unit test with jest
  • ✨ Simple code
  • 🎨 Readable code

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Getting Start

git clone https://github.com/tangweikun/leetcode.git
cd leetcode
npm install
npm run test // also you can run `npm run watch`

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Contents

# Title README Difficulty LeetCode TAGS
1 compare-version-numbers :green_book: Easy LeetCode String
2 set-matrix-zeroes :green_book: Easy LeetCode Array
3 triangle :green_book: Medium LeetCode DP
4 length-of-last-word :green_book: Easy LeetCode String
5 baseball-game :green_book: Easy LeetCode Stack
6 132-pattern :green_book: Medium LeetCode Stack
7 LongestCommonPrefix :green_book: Easy LeetCode String
8 longest-substring-without-repeating-characters :green_book: Easy LeetCode String
9 global-and-local-inversions :green_book: Medium LeetCode Array
10 min-stack :green_book: Medium LeetCode Stack
11 rotate-image :green_book: Medium LeetCode Array
12 task-scheduler :green_book: Medium LeetCode Array
13 search-insert-position :green_book: Easy LeetCode BinarySearch
14 judge-route-circle :green_book: Easy LeetCode String
15 advantage-shuffle :green_book: Medium LeetCode Array
16 number-of-matching-subsequences :green_book: Medium LeetCode Array
17 valid-parentheses :green_book: Easy LeetCode String
18 power-of-two :green_book: Easy LeetCode Math
19 number-of-1-bits :green_book: Easy LeetCode Bit
20 my-calendar-ii :green_book: Easy LeetCode Array
21 subdomain-visit-count :green_book: Easy LeetCode HashTable
22 top-k-frequent-elements :green_book: Medium LeetCode HashTable
23 climbing-stairs :green_book: Easy LeetCode DP
24 remove-element :green_book: Easy LeetCode Array
25 implement-strstr :green_book: Easy LeetCode String
26 largest-number-at-least-twice-of-others :green_book: Easy LeetCode Array
27 powx-n :green_book: Easy LeetCode Math
28 replace-words :green_book: Medium LeetCode HashTable
29 remove-duplicates-from-sorted-array :green_book: Easy LeetCode Two Pointer
30 roman-to-integer :green_book: Easy LeetCode Math
31 maximum-subarray :green_book: Easy LeetCode Array
32 plus-one :green_book: Easy LeetCode Math
33 add-binary :green_book: Easy LeetCode Math
34 sqrtx :green_book: Easy LeetCode Math
35 merge-sorted-array :green_book: Easy LeetCode Array
36 count-and-say :green_book: Easy LeetCode String
37 best-time-to-buy-and-sell-stock :green_book: Easy LeetCode Array
38 best-time-to-buy-and-sell-stock-ii :green_book: Easy LeetCode Array
39 valid-palindrome :green_book: Easy LeetCode TwoPointers
40 single-number :green_book: Easy LeetCode Bit
41 two-sum-ii-input-array-is-sorted :green_book: Easy LeetCode Array
42 rotate-array :green_book: Easy LeetCode Array
43 reverse-bits :green_book: Easy LeetCode Bit
44 asteroid-collision :green_book: Medium LeetCode Stack
45 top-k-frequent-words :green_book: Medium LeetCode HashTable
46 contiguous-array :green_book: Medium LeetCode HashTable
47 group-anagrams :green_book: Easy LeetCode HashTable
48 happy-number :green_book: Easy LeetCode Math
49 fizz-buzz :green_book: Easy LeetCode Math
50 hamming-distance :green_book: Easy LeetCode Bit
51 intersection-of-two-arrays :green_book: Easy LeetCode TowPointers
52 intersection-of-two-arrays-ii :green_book: Easy LeetCode TwoPointers
53 island-perimeter :green_book: Easy LeetCode HashTable
54 keyboard-row :green_book: Easy LeetCode HashTable
55 longest-palindrome :green_book: Easy LeetCode HashTable
56 longest-continuous-increasing-subsequence :green_book: Easy LeetCode Array
57 longest-harmonious-subsequence :green_book: Easy LeetCode HashTable
58 first-unique-character-in-a-string :green_book: Easy LeetCode String
59 find-the-difference :green_book: Easy LeetCode HashTable
60 add-digits :green_book: Easy LeetCode Math
61 add-strings :green_book: Easy LeetCode Math
62 array-partition-i :green_book: Easy LeetCode Array
63 arranging-coins :green_book: Easy LeetCode Math
64 contains-duplicate :green_book: Easy LeetCode Array
65 contains-duplicate-ii :green_book: Easy LeetCode Array
66 count-binary-substrings :green_book: Easy LeetCode String
67 detect-capital :green_book: Easy LeetCode String
68 distribute-candies :green_book: Easy LeetCode HashTable
69 count-primes :green_book: Easy LeetCode Math
70 base-7 :green_book: Easy LeetCode
71 power-of-three :green_book: Easy LeetCode Math
72 power-of-four :green_book: Easy LeetCode math
73 number-of-segments-in-a-string :green_book: Easy LeetCode String
74 reverse-string :green_book: Easy LeetCode String
75 reverse-string-ii :green_book: Easy LeetCode String
76 reverse-words-in-a-string-iii :green_book: Easy LeetCode String
77 reverse-vowels-of-a-string :green_book: Easy LeetCode String
78 ugly-number :green_book: Easy LeetCode Math
79 valid-anagram :green_book: Easy LeetCode HashTable
80 valid-palindrome-ii :green_book: Easy LeetCode String
81 word-pattern :green_book: Easy LeetCode HashTable
82 binary-number-with-alternating-bits :green_book: Easy LeetCode Bit
83 find-all-anagrams-in-a-string :green_book: Easy LeetCode HashTable
84 factorial-trailing-zeroes :green_book: Easy LeetCode Math
85 find-smallest-letter-greater-than-target :green_book: Easy LeetCode BinarySearch
86 find-pivot-index :green_book: Easy LeetCode Array
87 license-key-formatting :green_book: Easy LeetCode
88 longest-uncommon-subsequence-i :green_book: Easy LeetCode String
89 majority-element :green_book: Easy LeetCode Array
90 perfect-number :green_book: Easy LeetCode Math
91 prime-number-of-set-bits-in-binary-representation :green_book: Easy LeetCode Bit
92 number-complement :green_book: Easy LeetCode Bit
93 move-zeroes :green_book: Easy LeetCode Array
94 relative-ranks :green_book: Easy LeetCode
95 valid-perfect-square :green_book: Easy LeetCode Math
96 string-compression :green_book: Easy LeetCode String
97 student-attendance-record-i :green_book: Easy LeetCode String
98 max-consecutive-ones :green_book: Easy LeetCode Array
99 maximum-average-subarray-i :green_book: Easy LeetCode Array
100 minimum-index-sum-of-two-lists :green_book: Easy LeetCode
101 sum-of-square-numbers :green_book: Easy LeetCode Math
102 set-mismatch :green_book: Easy LeetCode Math
103 find-the-duplicate-number :green_book: Medium LeetCode Math
104 self-dividing-numbers :green_book: Easy LeetCode Math
105 missing-number :green_book: Easy LeetCode Math
106 maximum-product-of-three-numbers :green_book: Easy LeetCode Math
107 complex-number-multiplication :green_book: Medium LeetCode Math
108 ugly-number-ii :green_book: Medium LeetCode Math, DP
109 valid-square :green_book: Medium LeetCode Math
110 1-bit-and-2-bit-characters :green_book: Easy LeetCode Array
111 can-place-flowers :green_book: Easy LeetCode Array
112 find-all-numbers-disappeared-in-an-array :green_book: Easy LeetCode Array
113 container-with-most-water :green_book: Medium LeetCode Array
114 degree-of-an-array :green_book: Easy LeetCode Array
115 find-all-duplicates-in-an-array :green_book: Easy LeetCode Array
116 find-minimum-in-rotated-sorted-array :green_book: Easy LeetCode Array
117 find-minimum-in-rotated-sorted-array-ii :green_book: Easy LeetCode Array
118 find-peak-element :green_book: Medium LeetCode Array
119 jump-game :green_book: Medium LeetCode DP
120 jump-game-ii :green_book: Hard LeetCode DP
121 max-chunks-to-make-sorted :green_book: Medium LeetCode Array
122 maximum-swap :green_book: Medium LeetCode Array
123 min-cost-climbing-stairs :green_book: Medium LeetCode DP
124 minimum-size-subarray-sum :green_book: Medium LeetCode Array
125 remove-duplicates-from-sorted-array-ii :green_book: Medium LeetCode Array
126 search-for-a-range :green_book: Medium LeetCode Array
127 subarray-product-less-than-k :green_book: Medium LeetCode Array
128 daily-temperatures :green_book: Medium LeetCode Stack
129 sum-of-two-integers :green_book: Easy LeetCode Bit
130 jewels-and-stones :green_book: Easy LeetCode HashTable
131 number-of-boomerangs :green_book: Easy LeetCode HashTable
132 isomorphic-strings :green_book: Easy LeetCode HashTable
133 counting-bits :green_book: Easy LeetCode Bit
134 valid-triangle-number :green_book: Medium LeetCode Array
135 repeated-substring-pattern :green_book: Easy LeetCode String
136 maximum-depth-of-binary-tree :green_book: Easy LeetCode BinaryTree
137 merge-two-binary-trees :green_book: Easy LeetCode BinaryTree
138 average-of-levels-in-binary-tree :green_book: Easy LeetCode BinaryTree
139 find-duplicate-subtrees :green_book: Medium LeetCode BinaryTree
140 minimum-window-substring :green_book: Hard LeetCode String
141 invert-binary-tree :green_book: Easy LeetCode BinaryTree
142 two-sum-iv-input-is-a-bst :green_book: Easy LeetCode BinaryTree
143 same-tree :green_book: Easy LeetCode BinaryTree
144 sum-of-left-leaves :green_book: Easy LeetCode BinaryTree
145 trim-a-binary-search-tree :green_book: Easy LeetCode BinaryTree
146 toeplitz-matrix :green_book: Easy LeetCode Array
147 reshape-the-matrix :green_book: Easy LeetCode Array
148 next-greater-element-i :green_book: Easy LeetCode Array
149 nim-game :green_book: Easy LeetCode BrainTeaser
150 rotated-digits :green_book: Easy LeetCode String
151 excel-sheet-column-number :green_book: Easy LeetCode Math
152 ransom-note :green_book: Easy LeetCode String
153 k-diff-pairs-in-an-array :green_book: Easy LeetCode Array
154 third-maximum-number :green_book: Easy LeetCode Array
155 single-element-in-a-sorted-array :green_book: Medium LeetCode Array
156 single-number-iii :green_book: Medium LeetCode Array
157 arithmetic-slices :green_book: Medium LeetCode Math,DP
158 palindromic-substrings :green_book: Medium LeetCode String,DP
159 maximum-xor-of-two-numbers-in-an-array :green_book: Medium LeetCode Bit
160 sort-characters-by-frequency :green_book: Medium LeetCode HashTable
161 rotate-string :green_book: Medium LeetCode String
162 product-of-array-except-self :green_book: Medium LeetCode Array
163 teemo-attacking :green_book: Medium LeetCode Array
164 queue-reconstruction-by-height :green_book: Medium LeetCode Greedy
165 4sum-ii :green_book: Medium LeetCode HashTable
166 01-matrix :green_book: Medium LeetCode HashTable
167 3sum :green_book: Medium LeetCode TwoPointers
168 3sum-closest :green_book: Medium LeetCode TwoPointers
169 4Sum :green_book: Medium LeetCode TwoPointers
170 add-two-numbers :green_book: Medium LeetCode LinkedList
171 add-two-numbers-ii :green_book: Medium LeetCode LinkedList
172 add-and-search-word-data-structure-design :green_book: Medium LeetCode LinkedList
173 additive-number :green_book: Medium LeetCode String
174 assign-cookies :green_book: Easy LeetCode Greedy
175 basic-calculator :green_book: Medium LeetCode Stack
176 basic-calculator-ii :green_book: Medium LeetCode Stack
177 target-sum :green_book: Medium LeetCode DP
178 implement-queue-using-stacks :green_book: Easy LeetCode Stack
179 implement-stack-using-queues :green_book: Easy LeetCode Stack
180 next-greater-element-ii :green_book: Medium LeetCode Stack
181 binary-tree-tilt :green_book: Easy LeetCode Tree
182 diameter-of-binary-tree :green_book: Easy LeetCode Tree
183 symmetric-tree :green_book: Easy LeetCode Tree
184 second-minimum-node-in-a-binary-tree :green_book: Easy LeetCode Tree
185 subtree-of-another-tree :green_book: Easy LeetCode Tree
186 binary-tree-paths :green_book: Easy LeetCode DFS
187 path-sum :green_book: Easy LeetCode DFS
188 minimum-depth-of-binary-tree :green_book: Easy LeetCode DFS
189 find-bottom-left-tree-value :green_book: Medium LeetCode DFS
190 decode-string :green_book: Medium LeetCode DFS,Stack
191 find-largest-value-in-each-tree-row :green_book: Medium LeetCode DFS
192 max-area-of-island :green_book: Easy LeetCode DFS
193 flood-fill :green_book: Easy LeetCode DFS
194 balanced-binary-tree :green_book: Easy LeetCode DFS
195 friend-circles :green_book: Medium LeetCode DFS
196 house-robber-iii :green_book: Medium LeetCode DFS
197 increasing-subsequences :green_book: Medium LeetCode DFS
198 sum-root-to-leaf-numbers :green_book: Medium LeetCode DFS
199 number-of-islands :green_book: Medium LeetCode DFS
200 path-sum-ii :green_book: Medium LeetCode DFS
201 matchsticks-to-square :green_book: Medium LeetCode DFS
202 two-sum :green_book: Easy LeetCode Array
203 unique-morse-code-words :green_book: Easy LeetCode Hash
204 image-smoother :green_book: Easy LeetCode Array
205 pascals-triangle :green_book: Easy LeetCode Array
206 pascals-triangle-ii :green_book: Easy LeetCode Array
207 shortest-unsorted-continuous-subarray :green_book: Easy LeetCode Array
208 Non-decreasingArray :green_book: Easy LeetCode Array
209 range-addition-ii :green_book: Easy LeetCode Math
210 repeated-string-match :green_book: Easy LeetCode Math
211 house-robber :green_book: Easy LeetCode DP
212 minimum-ascii-delete-sum-for-two-strings :green_book: Medium LeetCode DP
213 maximum-length-of-pair-chain :green_book: Medium LeetCode DP,Greedy
214 integer-break :green_book: Medium LeetCode DP
215 count-numbers-with-unique-digits :green_book: Medium LeetCode DP
216 best-time-to-buy-and-sell-stock-with-transaction-fee :green_book: Medium LeetCode DP,Greedy
217 shopping-offers :green_book: Medium LeetCode DP,DFS
218 predict-the-winner :green_book: Medium LeetCode DP
219 2-keys-keyboard :green_book: Medium LeetCode DP
220 is-subsequence :green_book: Medium LeetCode DP
221 delete-and-earn :green_book: Medium LeetCode DP
222 longest-palindromic-subsequence :green_book: Medium LeetCode DP
223 combination-sum-iv :green_book: Medium LeetCode DP
224 maximum-length-of-repeated-subarray :green_book: Medium LeetCode DP
225 minimum-path-sum :green_book: Medium LeetCode DP
226 largest-sum-of-averages :green_book: Medium LeetCode DP
227 longest-increasing-subsequence :green_book: Medium LeetCode DP
228 partition-equal-subset-sum :green_book: Medium LeetCode DP
229 flipping-an-image :green_book: Easy LeetCode Array
230 positions-of-large-groups :green_book: Easy LeetCode Array
231 magic-squares-in-grid :green_book: Easy LeetCode Array
232 array-nesting :green_book: Medium LeetCode Array
233 combination-sum-iii :green_book: Medium LeetCode Backtracking
234 subsets :green_book: Medium LeetCode Backtracking
235 my-calendar-i :green_book: Medium LeetCode Array
236 combination-sum :green_book: Medium LeetCode Backtracking
237 spiral-matrix-ii :green_book: Medium LeetCode Backtracking
238 number-of-subarrays-with-bounded-maximum :green_book: Medium LeetCode Array
239 subarray-sum-equals-k :green_book: Medium LeetCode HashTable
240 sort-colors :green_book: Medium LeetCode HashTable
241 subsets-ii :green_book: Medium LeetCode Backtracking
242 summary-ranges :green_book: Medium LeetCode Array
243 merge-intervals :green_book: Medium LeetCode Array
244 minimum-moves-to-equal-array-elements :green_book: Easy LeetCode Math
245 minimum-moves-to-equal-array-elements-ii :green_book: Easy LeetCode Math
246 backspace-string-compare :green_book: Easy LeetCode Stack
247 partition-labels :green_book: Medium LeetCode TwoPointers,Greedy
248 peak-index-in-a-mountain-array :green_book: Easy LeetCode BinarySearch
249 goat-latin :green_book: Easy LeetCode String
250 custom-sort-string :green_book: Medium LeetCode String
251 nth-digit :green_book: Easy LeetCode Math
252 transpose-matrix :green_book: Easy LeetCode Array
253 maximize-distance-to-closest-person :green_book: Easy LeetCode Array
254 bulls-and-cows :green_book: Medium LeetCode HashTable
255 construct-the-rectangle :green_book: Easy LeetCode Math
256 most-common-word :green_book: Easy LeetCode String
257 shortest-distance-to-a-character :green_book: Easy LeetCode String
258 binary-gap :green_book: Easy LeetCode String
259 lemonade-change :green_book: Easy LeetCode Greedy
260 excel-sheet-column-title :green_book: Easy LeetCode Math
261 largest-triangle-area :green_book: Easy LeetCode Math
262 reordered-power-of-2 :green_book: Medium LeetCode Math
263 spiral-matrix Medium LeetCode Math
264 long-pressed-name Easy LeetCode String
265 uncommon-words-from-two-sentences Easy LeetCode String
266 reverse-only-letters Easy LeetCode String
267 powerful-integers Easy LeetCode Math
268 minimum-add-to-make-parentheses-valid Easy LeetCode String

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:zap: Leetcode Solutions

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