KU99 questions

KU99 answers

• How to tidy messy data [closed]
• How to identify patterns in a column in R and give an identity to said patterns
• Finding the longest stretch of repeated words in a long string of characters
• Ignore zeros and NAs in cumsum
• R Standardizing numeric variables in dataframe while retaining factor variables
• Find closest value above current row that meets condition and apply function for each group
• select all columns after a designated column using R
• mutate by group in R
• Return the position (row and column) of a data group in a DataFrame [Pandas]
• What's the name of the first argument of `[`?