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my personal best leetcode solutions - Most beats 100% in terms of run time and space time complexity

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.vscode

.vscode

 
 

.DS_Store

.DS_Store

 
 

1. Two Sum.java

1. Two Sum.java

 
 

100. Same Tree.java

100. Same Tree.java

 
 

101. Symmetric Tree.java

101. Symmetric Tree.java

 
 

102. Binary Tree Level Order Traversal.java

102. Binary Tree Level Order Traversal.java

 
 

104. Maximum Depth of Binary Tree.java

104. Maximum Depth of Binary Tree.java

 
 

1045. Customers Who Bought All Products.sql

1045. Customers Who Bought All Products.sql

 
 

1070. Product Sales Analysis III.sql

1070. Product Sales Analysis III.sql

 
 

108. Convert Sorted Array to Binary Search Tree.java

108. Convert Sorted Array to Binary Search Tree.java

 
 

11. Container With Most Water.java

11. Container With Most Water.java

 
 

1119. Remove Vowels from a String.java

1119. Remove Vowels from a String.java

 
 

114. Flatten Binary Tree to Linked List.java

114. Flatten Binary Tree to Linked List.java

 
 

1174. Immediate Food Delivery II.sql

1174. Immediate Food Delivery II.sql

 
 

118. Pascal's Triangle.java

118. Pascal's Triangle.java

 
 

1193. Monthly Transactions I.sql

1193. Monthly Transactions I.sql

 
 

12. Integer to Roman.java

12. Integer to Roman.java

 
 

1207. Unique Number of Occurrences.java

1207. Unique Number of Occurrences.java

 
 

1209. Remove All Adjacent Duplicates in String II.java

1209. Remove All Adjacent Duplicates in String II.java

 
 

121. Best Time to Buy and Sell Stock.java

121. Best Time to Buy and Sell Stock.java

 
 

125. Valid Palindrome.java

125. Valid Palindrome.java

 
 

1265. Print Immutable Linked List in Reverse.java

1265. Print Immutable Linked List in Reverse.java

 
 

128. Longest Consecutive Sequence.java

128. Longest Consecutive Sequence.java

 
 

1328. Break a Palindrome.java

1328. Break a Palindrome.java

 
 

1356. Sort Integers by The Number of 1 Bits.java

1356. Sort Integers by The Number of 1 Bits.java

 
 

136. Single Number.java

136. Single Number.java

 
 

1404. Number of Steps to Reduce a Number in Binary Representation to One.java

1404. Number of Steps to Reduce a Number in Binary Representation to One.java

 
 

141. Linked List Cycle.java

141. Linked List Cycle.java

 
 

142. Linked List Cycle II.java

142. Linked List Cycle II.java

 
 

143. Reorder List.java

143. Reorder List.java

 
 

1431. Kids With the Greatest Number of Candies.java

1431. Kids With the Greatest Number of Candies.java

 
 

144. Binary Tree Preorder Traversal.java

144. Binary Tree Preorder Traversal.java

 
 

1445. Apples & Oranges.sql

1445. Apples & Oranges.sql

 
 

145. Binary Tree Postorder Traversal.java

145. Binary Tree Postorder Traversal.java

 
 

146. LRU Cache.java

146. LRU Cache.java

 
 

1480. Running Sum of 1d Array.java

1480. Running Sum of 1d Array.java

 
 

150. Evaluate Reverse Polish Notation.java

150. Evaluate Reverse Polish Notation.java

 
 

1502. Can Make Arithmetic Progression From Sequence.java

1502. Can Make Arithmetic Progression From Sequence.java

 
 

151. Reverse Words in a String.java

151. Reverse Words in a String.java

 
 

152. Maximum Product Subarray.java

152. Maximum Product Subarray.java

 
 

1523. Count Odd Numbers in an Interval Range.java

1523. Count Odd Numbers in an Interval Range.java

 
 

153. Find Minimum in Rotated Sorted Array.java

153. Find Minimum in Rotated Sorted Array.java

 
 

155. Min Stack.java

155. Min Stack.java

 
 

1572. Matrix Diagonal Sum.java

1572. Matrix Diagonal Sum.java

 
 

160. Intersection of Two Linked Lists.java

160. Intersection of Two Linked Lists.java

 
 

163. Missing Ranges.java

163. Missing Ranges.java

 
 

1647. Minimum Deletions to Make Character Frequencies Unique.java

1647. Minimum Deletions to Make Character Frequencies Unique.java

 
 

1661. Average Time of Process per Machine.sql

1661. Average Time of Process per Machine.sql

 
 

168. Excel Sheet Column Title.java

168. Excel Sheet Column Title.java

 
 

169. Majority Element.java

169. Majority Element.java

 
 

17. Letter Combinations of a Phone Number.java

17. Letter Combinations of a Phone Number.java

 
 

171. Excel Sheet Column Number.java

171. Excel Sheet Column Number.java

 
 

172. Factorial Trailing Zeroes.java

172. Factorial Trailing Zeroes.java

 
 

1768. Merge Strings Alternately.java

1768. Merge Strings Alternately.java

 
 

189. Rotate Array.java

189. Rotate Array.java

 
 

19. Remove Nth Node From End of List.java

19. Remove Nth Node From End of List.java

 
 

1907. Count Salary Categories.sql

1907. Count Salary Categories.sql

 
 

1920. Build Array from Permutation.java

1920. Build Array from Permutation.java

 
 

1929. Concatenation of Array.java

1929. Concatenation of Array.java

 
 

1934. Confirmation Rate.sql

1934. Confirmation Rate.sql

 
 

2. Add Two Numbers.java

2. Add Two Numbers.java

 
 

20. Valid Parentheses.java

20. Valid Parentheses.java

 
 

200. Number of Islands.java

200. Number of Islands.java

 
 

202. Happy Number.java

202. Happy Number.java

 
 

206. Reverse Linked List.java

206. Reverse Linked List.java

 
 

21. Merge Two Sorted Lists.java

21. Merge Two Sorted Lists.java

 
 

215. Kth Largest Element in an Array.java

215. Kth Largest Element in an Array.java

 
 

217. Contains Duplicate.java

217. Contains Duplicate.java

 
 

22. Generate Parentheses.java

22. Generate Parentheses.java

 
 

2244. Minimum Rounds to Complete All Tasks.java

2244. Minimum Rounds to Complete All Tasks.java

 
 

230. Kth Smallest Element in a BST.java

230. Kth Smallest Element in a BST.java

 
 

2300. Successful Pairs of Spells and Potions.java

2300. Successful Pairs of Spells and Potions.java

 
 

231. Power of Two.java

231. Power of Two.java

 
 

234. Palindrome Linked List.java

234. Palindrome Linked List.java

 
 

236. Lowest Common Ancestor of a Binary Tree.java

236. Lowest Common Ancestor of a Binary Tree.java

 
 

237. Delete Node in a Linked List.java

237. Delete Node in a Linked List.java

 
 

238. Product of Array Except Self.java

238. Product of Array Except Self.java

 
 

239. Sliding Window Maximum.java

239. Sliding Window Maximum.java

 
 

240. Search a 2D Matrix II.java

240. Search a 2D Matrix II.java

 
 

242. Valid Anagram.java

242. Valid Anagram.java

 
 

268. Missing Number.java

268. Missing Number.java

 
 

271. Encode and Decode Strings.java

271. Encode and Decode Strings.java

 
 

28. Find the Index of the First Occurrence in a String.java

28. Find the Index of the First Occurrence in a String.java

 
 

287. Find the Duplicate Number.java

287. Find the Duplicate Number.java

 
 

290. Word Pattern.java

290. Word Pattern.java

 
 

3. Longest Substring Without Repeating Characters.java

3. Longest Substring Without Repeating Characters.java

 
 

305. Number of Islands II.java

305. Number of Islands II.java

 
 

31. Next Permutation.java

31. Next Permutation.java

 
 

322. Coin Change.java

322. Coin Change.java

 
 

328. Odd Even Linked List.java

328. Odd Even Linked List.java

 
 

33. Search in Rotated Sorted Array.java

33. Search in Rotated Sorted Array.java

 
 

334. Increasing Triplet Subsequence.java

334. Increasing Triplet Subsequence.java

 
 

347. Top K Frequent Elements.java

347. Top K Frequent Elements.java

 
 

36. Valid Sudoku.java

36. Valid Sudoku.java

 
 

4. Median of Two Sorted Arrays.java

4. Median of Two Sorted Arrays.java

 
 

409. Longest Palindrome.java

409. Longest Palindrome.java

 
 

41. First Missing Positive.java

41. First Missing Positive.java

 
 

412. Fizz Buzz.java

412. Fizz Buzz.java

 
 

415. Add Strings.java

415. Add Strings.java

 
 

42. Trapping Rain Water.java

42. Trapping Rain Water.java

 
 

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my personal best leetcode solutions - Most beats 100% in terms of run time and space time complexity

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