add COS 226, also known as Algorithms Part 1 and Part 2 on Coursera

README.md

@@ -70,6 +70,7 @@ Courses
 - [6.006 - Introduction to Algorithms, MIT OCW](http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-006-introduction-to-algorithms-fall-2011/lecture-videos/)
 - [Algorithms: Design and Analysis 1 - Stanford University](https://www.youtube.com/playlist?list=PLXFMmlk03Dt7Q0xr1PIAriY5623cKiH7V)
 - [Algorithms: Design and Analysis 2 - Stanford University](https://www.youtube.com/playlist?list=PLXFMmlk03Dt5EMI2s2WQBsLsZl7A5HEK6)
+- [COS 226 Algorithms, Youtube, Princeton - by Robert Sedgewick and Kevin Wayne](https://www.youtube.com/watch?v=1QZDe28peZk&list=PLRdD1c6QbAqJn0606RlOR6T3yUqFWKwmX&index=1)
 - [CSE 331 Introduction to Algorithm Design and Analysis, SUNY University at Buffalo, NY - Fall 2017](http://www-student.cse.buffalo.edu/~atri/cse331/fall17/index.html) ([Lectures](https://www.youtube.com/playlist?list=PLZBCR-EGqNpoiHeO17FlLADJ38Kb3EiPU)) ([Homework Walkthroughs](https://www.youtube.com/playlist?list=PLZBCR-EGqNpoVyQCIUDHiXnL-zdFD_ixk))
 - [CSE 373 - Analysis of Algorithms, Stony Brook - Prof Skiena](http://www.cs.sunysb.edu/~algorith/video-lectures/)
 - [COP 3530 Data Structures and Algorithms, Prof Sahni, UFL](http://www.cise.ufl.edu/~sahni/cop3530/) ([Videos](http://www.cise.ufl.edu/academics/courses/preview/cop3530sahni/))