awesome-java-leetcode

weixin_33724059發表於2017-04-23
JavaLeetCode

awesome-java-leetcode

我如今是一名Android Developer，大學的我曾是一名ACMer，我一直認為資料結構和演算法是作為一名程式設計師必須掌握和善於利用的，為了不讓資料結構和演算法淡出我的記憶，所以我打算重拾LeetCode之Algorithm，語言選擇的是Java，題庫會一點點完善起來，按簡單，中等，困難分類，相應難度下按題號排序，原始碼在src目錄中，相關解題都在note目錄中，想要學習資料結構和演算法或打算刷LeetCode的小夥伴們歡迎star哦。

如今有機會面試Facebook，附上LeetCode上Facebook的面試題目序號，希望可以幫助到以後想入Facebook的小夥伴:-)

1,10,13,15,17,20,23,25,26,28,33,38,43,44,49,50,56,57,67,68,69,71,75,76
78,79,80,85,88,90,91,98,102,117,121,125,127,128,133,139,146,157,158,161
168,173,200,206,208,209,210,211,215,218,221,234,235,236,238,252,253,257
261,265,269,273,274,275,277,278,282,283,285,286,297,301,311,314,325,334
341,377,380,398,404,410,461,477,494,523,525,534,535,543,554

如果想知道更多公司LeetCode面試題，可以參看Companies.md。

附上鎮樓詩：

明有科舉八股，今有LeetCode。
八股定格式而取文采心意，LeetCode定題目且重答案背誦。
美其名曰："practice makes perfect."
為何今不如古？
非也非也，
科舉為國取士，LeetCode為Google篩碼工，各取所需也。

Easy

# Title Tag
1 Two Sum Array, Hash Table
7 Reverse Integer Math
9 Palindrome Number Math
13 Roman to Integer Math, String
14 Longest Common Prefix String
20 Valid Parentheses Stack, String
21 Merge Two Sorted Lists Linked List
26 Remove Duplicates from Sorted Array Array, Two Pointers
27 Remove Element Array, Two Pointers
28 Implement strStr() Two Pointers, String
35 Search Insert Position String
38 Count and Say String
53 Maximum Subarray Array, Dynamic Programming, Divide and Conquer
58 Length of Last Word String
66 Plus One Array, Math
67 Add Binary Math, String
69 Sqrt(x) Binary Search, Math
70 Climbing Stairs Dynamic Programming
83 Remove Duplicates from Sorted List Linked List
88 Merge Sorted Array Array, Two Pointers
100 Same Tree Tree, Depth-first Search
101 Symmetric Tree Tree, Depth-first Search, Breadth-first Search
104 Maximum Depth of Binary Tree Tree, Depth-first Search
107 Binary Tree Level Order Traversal II Tree, Breadth-first Search
108 Convert Sorted Array to Binary Search Tree Tree, Depth-first Search
110 Balanced Binary Tree Tree, Depth-first Search
111 Minimum Depth of Binary Tree Tree, Depth-first Search, Breadth-first Search
112 Path Sum Tree, Depth-first Search
118 Pascal's Triangle Array
119 Pascal's Triangle II Array
121 Best Time to Buy and Sell Stock Array, Dynamic Programmin
122 Best Time to Buy and Sell Stock II Array, Greedy
543 Diameter of Binary Tree Tree

Medium

# Title Tag
2 Add Two Numbers Linked List, Math
3 Longest Substring Without Repeating Characters Hash Table, Two Pointers, String
5 Longest Palindromic Substring String
8 String to Integer (atoi) Math, String
15 3Sum Array, Two Pointers
17 Letter Combinations of a Phone Number String, Backtracking
19 Remove Nth Node From End of List Linked List, Two Pointers
33 Search in Rotated Sorted Array Arrays, Binary Search
43 Multiply Strings Math, String
49 Group Anagrams Hash Table, String
50 Pow(x, n) Math, Binary Search
56 Merge Intervals Array, Sort
554 Brick Wall Hash Table

Hard

# Title Tag
4 Median of Two Sorted Arrays Array, Binary Search, Divide and Conquer
10 Regular Expression Matching String, Dynamic Programming, Backtracking
23 Merge k Sorted Lists Linked List, Divide and Conquer, Heap
25 Reverse Nodes in k-Group Linked List
44 Reverse Nodes in k-Group String, Dynamic Programming, Backtracking, Greedy
57 Insert Interval Array, Sort
68 Text Justification String