ThomasIsCoding

ThomasIsCoding has asked 21 questions and find answers to 480 problems.

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ThomasIsCoding questions

Any concise way of using `regex` to reverse a string, e.g., with `gsub` in R? (looking for workarounds)
construct block matrix consisting of different powers of basis matrices
(Speed Challenge) Any faster way to compute distance matrix in terms of generic Hamming distance?
Any more concise `data.table` way to unnest a nested column in data.table?
With dplyr, how to update two twisted columns in parallel, rather than an iterative manner?
Efficiently enumerate all possible matrices with given constraints
Simpler code to create a cell array of char type with the same prefix + sequential indices?
any efficient way to spread the list names to its inside vectors?
How to efficiently divide pairs into clusters such that each cluster contains all entries of a given set
Backtracking: List all possible matrices with row and column sum constraints

ThomasIsCoding answers

Finding different max between specified rows of different fields
`magrittr` pipe into apply
Unique string combinations of consecutive integers
How to calculate row sums in R with dynamic columns
R - Find all sequences and their frequencies in a data frame
how to do the calculation with different signs
Efficient data.table method to generate additional rows given random numbers
Element by element exponential of a sparse matrix in R
Calculating percentile of values from separate grouped dataframes
Main path analysis in citation network using igraph in R