Assign random values to column according to another column's values in R

Question

I have a dataset that has Stock Codes with the range from 2-90214 (which has around 3000 unique values). Obviously, some values between 2 and 90214 are getting skipped. I want t

Answer 1

We can convert the numbers into factor and then transform it into numeric

as.numeric(factor(df$StockCode))

#[1] 1 3 2 1 3

If we need it starting from 100 we can add 99 in it

as.numeric(factor(df$StockCode)) + 99

Same numbers would get same factor level which upon converting into numeric would give same numeric value