What are some cool websites to learn and practice algorithms, data structures and OOPS concepts for beginners other than hackerrank.com?

Is there a general way to recognize where a better algorithm than DFS or BFS can be used?

How do I write Strassen’s 4×4 matrix multiplication C program using divide and conquer?

Why do l need to apply PCA whitening to my images (black and white) before training my convolutional neural network (CNN)?

Can I collaborate R and Python in the same webpage?

Why does the book “Competitive Programming” by Halim suggest to set array sizes a bit larger than needed?

What is the best online site to study data structures and algorithm?

Let S be a finite set with n elements. What is the number of reflexive relations that can be defined in S?

Which Turkish startups are offering summer internships related to optimisation algorithms and/or machine learning?

I am hitting a plateau in my algorithmic skills, what should I do?

What are examples of collinear points?

What is the license of Multiscale Combinatorial Grouping algorithm?

Now that I have my data set ready with my algorithm, how do I implement it?

Which algorithm did Facebook use to filter fake news in the news feed? Is it open-sourced yet?

Which types of modeling is well suited for algorithmic description?

How do I find the LCM using recursion?

Which topics of algorithms should be covered to become a good programmer?

How does one learn to predict the next word by predicting a path through a binary tree?

How would I prove Vertex Cover is in NP?

How does the work sender side go back in an algorithm?