KU99 questions

KU99 answers

• Using Run-Length Encoding and Generating Sums
• Converting All Redundant Floats in a String to Integers
• Acumulative sum in R
• How to merge rows with the same prefix in a data frame?
• How can I reshape my dataframe into a 3-dimensional numpy array?
• How to make a `functools.reduce` implementation that looks similarly as `Reduce` in R?
• Group by using str_detect for groups with similar strings
• Create a new column populated by level names in R
• Which rows/columns are duplicates of which others in R matrices?
• Subtracting rows based on conditions in other columns