在职跳槽，刷题打卡总结帖

二刷里扣，在职跳槽，记录下刷题历程。

2018.12.13 - 2018.12.20 DFS

2018.12.13
Same Tree
Convert Sorted Array to Binary Search Tree
Binary Tree Paths
Balanced Binary Tree
Max Area of Island

2018.12.14
Nested List Weight Sum
Leaf-Similar Trees
Increasing Order Search Tree
Maximum Depth of Binary Tree
Employee Importance
Flood Fill
Path Sum
Minimum Depth of Binary Tree

2018.12.16
1. Maximum Depth of N-ary Tree
2. Find Leaves of Binary Tree
3. Keys and Rooms
4. Find Bottom Left Tree Value
5. Lonely Pixel I

2018.12.17
1. Symmetric Tree
2. Construct Binary Tree from Inorder and Postorder Traversal
3. Path Sum II
4. Populating Next Right Pointers in Each Node
5. Binary Tree Maximum Path Sum *
6. Sum Root to Leaf Numbers
7. Binary Tree Right Side View
8. Convert Sorted List to Binary Search Tree

ToDo List for 2018.12.18:
1. Union-Find 阅读Tutorial + 里扣题3
2. Topology Sort 阅读Tutorial + 里扣题3
3. 总结树 + 找不一定经过root的path类题型

2018.12.18
1. Network Delay Time （Dijkstra算法，2天后再写一遍）
2. Nested List Weight Sum II (看了Discussion，用不断累加替代乘法）
3. Ternary Expression Parser (后退的压栈，进击的巨人）
4. Friend Circles (DFS，可以用Union Find，2天后再写一遍）
5. Decode String
6. Pacific Atlantic Water Flow
7. Minesweeper

2018.12.19 - 2018.12.20
1. House Robber III
2. Course Schedule
3. 01 Matrix