update progress

Author: yennanliu

doc/progress.md

@@ -1,5 +1,34 @@
 # Progress
 
+# 2021-11-21
+- DOING:
+	- LC (appl_)
+		- ref :https://github.com/yennanliu/CS_basics/blob/master/doc/leetcode_company_V1/Apple%20-%20LeetCode.pdf
+		- programming
+			- review
+			- (normal order)
+			- (pdf : p.1)
+				- 435
+			- =======
+			- **back track**
+			- Binary Search Tree
+			- Binary Search
+			- linked list
+			- sliding window
+			- Tree
+			- =======
+			- hash table
+			- bit manipulation
+			- union find
+			- quick sort
+			- intervals
+		- SQL
+	- Crack Code
+	- System Design
+		- Netflix system design
+	- algorithm book (labu)
+		- P.360 - 364
+
 # 2021-11-20
 - DOING:
 	- LC (am_)
@@ -10,7 +39,6 @@
 			- (pdf : p.13)
 				- 776 (again!)
 				- 646 (again!)
-				- 435
 			- =======
 			- **back track**
 			- Binary Search Tree