Ben

Ben has asked 100 questions and find answers to 33 problems.

Stats

About

Founder of Practice Probs - a platform for learning programming via fun challenge problems.

Ben questions

Given a matrix, x, set all elements below the main diagonal to 0
Title getting cut off using grid.arrange
How to sort a data.table based on a set of inequality constraints?
How does std::vector support contiguous memory for custom objects of unknown size
Elegant way to identify runs inside a data.table
Why does geocode keep returning the wrong address but Google Maps works correctly
How to replace all occurrences of regex as if applying replace repeatedly
Expose simple C++ Student class to R using Rcpp modules
A better way to aggregate data and keep table structure and column names with Pandas
How to speed up pandas groupby - apply function to be comparable to R's data.table

Ben answers

How can i plot binary tree with 13 nodes in R Studio
Check if a value in one table (X) is between the values in two columns in another table (Y) with R data.table
Expose simple C++ Student class to R using Rcpp modules
Why does geocode keep returning the wrong address but Google Maps works correctly
numpy elementwise outer product
How to install XGBoost on OSX with multi-threading
Time series as `ts` column in data.table?
R - data frame - convert to sparse matrix
How can I compute statistics by decile groups in data.table
How to install Rodeo IDE in Anaconda python distribution?