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☕ The learning note about data structures, algorithms, and leetcode problems, which are based on java、python、golang, and c++.

goog.tech/leetcode

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652 Commits
#1. Two Sum
#1. Two Sum
 
 
#100. Same Tree
#100. Same Tree
 
 
#101. Symmetric Tree
#101. Symmetric Tree
 
 
#102. Binary Tree Level Order Traversal
#102. Binary Tree Level Order Traversal
 
 
#1021. Remove Outermost Parentheses
#1021. Remove Outermost Parentheses
 
 
#104. Maximum Depth of Binary Tree
#104. Maximum Depth of Binary Tree
 
 
#1047. Remove All Adjacent Duplicates In String
#1047. Remove All Adjacent Duplicates In String
 
 
#108. Convert Sorted Array to Binary Search Tree
#108. Convert Sorted Array to Binary Search Tree
 
 
#109. Convert Sorted List to Binary Search Tree
#109. Convert Sorted List to Binary Search Tree
 
 
#11. Container With Most Water
#11. Container With Most Water
 
 
#110. Balanced Binary Tree
#110. Balanced Binary Tree
 
 
#1108. Defanging an IP Address
#1108. Defanging an IP Address
 
 
#111. Minimum Depth of Binary Tree
#111. Minimum Depth of Binary Tree
 
 
#1123. Lowest Common Ancestor of Deepest Leaves
#1123. Lowest Common Ancestor of Deepest Leaves
 
 
#114. Flatten Binary Tree to Linked List
#114. Flatten Binary Tree to Linked List
 
 
#1207. Unique Number of Occurrences
#1207. Unique Number of Occurrences
 
 
#121. Best Time to Buy and Sell Stock
#121. Best Time to Buy and Sell Stock
 
 
#1221. Split a String in Balanced Strings
#1221. Split a String in Balanced Strings
 
 
#124. Binary Tree Maximum Path Sum
#124. Binary Tree Maximum Path Sum
 
 
#125. Valid Palindrome
#125. Valid Palindrome
 
 
#1281. Subtract the Product and Sum of Digits of an Integer
#1281. Subtract the Product and Sum of Digits of an Integer
 
 
#129. Sum Root to Leaf Numbers
#129. Sum Root to Leaf Numbers
 
 
#1290. Convert Binary Number in a Linked List to Integer
#1290. Convert Binary Number in a Linked List to Integer
 
 
#1295. Find Numbers with Even Number of Digits
#1295. Find Numbers with Even Number of Digits
 
 
#1299. Replace Elements with Greatest Element on Right Side
#1299. Replace Elements with Greatest Element on Right Side
 
 
#1302. Deepest Leaves Sum
#1302. Deepest Leaves Sum
 
 
#1305. All Elements in Two Binary Search Trees
#1305. All Elements in Two Binary Search Trees
 
 
#1309. Decrypt String from Alphabet to Integer Mapping
#1309. Decrypt String from Alphabet to Integer Mapping
 
 
#1315. Sum of Nodes with Even-Valued Grandparent
#1315. Sum of Nodes with Even-Valued Grandparent
 
 
#1323. Maximum 69 Number
#1323. Maximum 69 Number
 
 
#1332. Remove Palindromic Subsequences
#1332. Remove Palindromic Subsequences
 
 
#1342. Number of Steps to Reduce a Number to Zero
#1342. Number of Steps to Reduce a Number to Zero
 
 
#136. Single Number
#136. Single Number
 
 
#137. Single Number II
#137. Single Number II
 
 
#1374. Generate a String With Characters That Have Odd Counts
#1374. Generate a String With Characters That Have Odd Counts
 
 
#1381. Design a Stack With Increment Operation
#1381. Design a Stack With Increment Operation
 
 
#14. Longest Common Prefix
#14. Longest Common Prefix
 
 
#141. Linked List Cycle
#141. Linked List Cycle
 
 
#1436. Destination City
#1436. Destination City
 
 
#144. Binary Tree Preorder Traversal
#144. Binary Tree Preorder Traversal
 
 
#1441. Build an Array With Stack Operations
#1441. Build an Array With Stack Operations
 
 
#1448. Count Good Nodes in Binary Tree
#1448. Count Good Nodes in Binary Tree
 
 
#145. Binary Tree Postorder Traversal
#145. Binary Tree Postorder Traversal
 
 
#1455. Check If a Word Occurs As a Prefix of Any Word in a Sentence
#1455. Check If a Word Occurs As a Prefix of Any Word in a Sentence
 
 
#1464. Maximum Product of Two Elements in an Array
#1464. Maximum Product of Two Elements in an Array
 
 
#1470. Shuffle the Array
#1470. Shuffle the Array
 
 
#1480. Running Sum of 1d Array
#1480. Running Sum of 1d Array
 
 
#1486. XOR Operation in an Array
#1486. XOR Operation in an Array
 
 
#1491. Average Salary Excluding the Minimum and Maximum Salary
#1491. Average Salary Excluding the Minimum and Maximum Salary
 
 
#1502. Can Make Arithmetic Progression From Sequence
#1502. Can Make Arithmetic Progression From Sequence
 
 
#151. Reverse Words in a String
#151. Reverse Words in a String
 
 
#1512. Number of Good Pairs
#1512. Number of Good Pairs
 
 
#1518. Water Bottles
#1518. Water Bottles
 
 
#1528. Shuffle String
#1528. Shuffle String
 
 
#1544. Make The String Great
#1544. Make The String Great
 
 
#155. Min Stack
#155. Min Stack
 
 
#1557. Minimum Number of Vertices to Reach All Nodes
#1557. Minimum Number of Vertices to Reach All Nodes
 
 
#160. Intersection of Two Linked Lists
#160. Intersection of Two Linked Lists
 
 
#165. Compare Version Numbers
#165. Compare Version Numbers
 
 
#167. Two Sum II - Input array is sorted
#167. Two Sum II - Input array is sorted
 
 
#169. Majority Element
#169. Majority Element
 
 
#173. Binary Search Tree Iterator
#173. Binary Search Tree Iterator
 
 
#182. Duplicate Emails
#182. Duplicate Emails
 
 
#183. Customers Who Never Order
#183. Customers Who Never Order
 
 
#19. Remove Nth Node From End of List
#19. Remove Nth Node From End of List
 
 
#191. Number of 1 Bits
#191. Number of 1 Bits
 
 
#196. Delete Duplicate Emails
#196. Delete Duplicate Emails
 
 
#198. House Robber
#198. House Robber
 
 
#199. Binary Tree Right Side View
#199. Binary Tree Right Side View
 
 
#2. Add Two Numbers
#2. Add Two Numbers
 
 
#20. Valid Parentheses
#20. Valid Parentheses
 
 
#203. Remove Linked List Elements
#203. Remove Linked List Elements
 
 
#206. Reverse Linked List
#206. Reverse Linked List
 
 
#21. Merge Two Sorted Lists
#21. Merge Two Sorted Lists
 
 
#217. Contains Duplicate
#217. Contains Duplicate
 
 
#22. Generate Parentheses
#22. Generate Parentheses
 
 
#222. Count Complete Tree Nodes
#222. Count Complete Tree Nodes
 
 
#225. Implement Stack using Queues
#225. Implement Stack using Queues
 
 
#226. Invert Binary Tree
#226. Invert Binary Tree
 
 
#230. Kth Smallest Element in a BST
#230. Kth Smallest Element in a BST
 
 
#232. Implement Queue using Stacks
#232. Implement Queue using Stacks
 
 
#234. Palindrome Linked List
#234. Palindrome Linked List
 
 
#235. Lowest Common Ancestor of a Binary Search Tree
#235. Lowest Common Ancestor of a Binary Search Tree
 
 
#236. Lowest Common Ancestor of a Binary Tree
#236. Lowest Common Ancestor of a Binary Tree
 
 
#237. Delete Node in a Linked List
#237. Delete Node in a Linked List
 
 
#242. Valid Anagram
#242. Valid Anagram
 
 
#257. Binary Tree Paths
#257. Binary Tree Paths
 
 
#258. Add Digits
#258. Add Digits
 
 
#26. Remove Duplicates from Sorted Array
#26. Remove Duplicates from Sorted Array
 
 
#260. Single Number III
#260. Single Number III
 
 
#27. Remove Element
#27. Remove Element
 
 
#28. Implement strStr()
#28. Implement strStr()
 
 
#283. Move Zeroes
#283. Move Zeroes
 
 
#303. Range Sum Query - Immutable
#303. Range Sum Query - Immutable
 
 
#344. Reverse String
#344. Reverse String
 
 
#345. Reverse Vowels of a String
#345. Reverse Vowels of a String
 
 
#349. Intersection of Two Arrays
#349. Intersection of Two Arrays
 
 
#35. Search Insert Position
#35. Search Insert Position
 
 
#350. Intersection of Two Arrays II
#350. Intersection of Two Arrays II
 
 
#383. Ransom Note
#383. Ransom Note
 
 

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😎 大三狗带你从零开始刷LeetCode !

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☕ The learning note about data structures, algorithms, and leetcode problems, which are based on java、python、golang, and c++.

goog.tech/leetcode

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python java golang c-plus-plus leetcode gitbook note algorithms-and-data-structures

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