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Introduction
Common Highlights About Java
General
Big-O Notation
Collections
Queue
Stack
List
Basic Java
Array
1 Sum of Two
3 Longest Sub-string without repeating character
153/154 Find Minimum in Rotated Sorted Array I/ II
189 Rotate Array
81 Search in Rotated Array
Tree
Binary Tree
103 Binary Tree Zigzag Level Order
105 Construct Binary Tree from Preorder and Inorder Traversal
110 Balanced Binary Tree
104/111 Maximum/Minimum Depth of Binary Tree
114 Flatten Binary Tree to Linked List
94 Binary Tree Inorder Traversal
108/109 Convert Sorted Array/LinkedList to Binary Search Tree
98 Validate a Binary Search Tree
235/236 Lowest Common Ancestor of a BST / Binary Tree
String
12 Integer to Roman
10 Regular Expression Matching
344/345 Reverse String/ Reverse the vowel in string
14 Longest Common Prefix
Dynamic Programming
Dynamic Programming
53 Maximum Subarray
121 Best Time to Buy and Sell Stock
152 Maximum Product Subarray
Linked List
86 Partition List
234 Palindrome Linked List
141/142 Linked List Cycle
61 Rotate List
Graph
Backtracking
79 Word Search
Heap
215 Kth Largest element in the array
Depth-First-Search
78 Subsets
Math
Microsoft
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Math
Math
convert string to int "5"-"0" = 5
AddBinary
Plus One
Multiply Strings
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