r - Create a column of random integers, where the min and max integer for each row come from adjacent columns -

i have data frame:

letter <- c("a", "b", "c") min <- c(1, 2, 3) max <- c(4, 5, 6) df <- data.frame(letter, min, max) 

i want add 4th column df generates random number each row, lower , upper limits random integers sampled min , max values of row, respectively.

i have inkling should use sample(), when returns column of values drawn randomly referenced column:

df$random <- sample(df$max) 

could use runif?

assuming dataframe df as

   letter min max 1        1   4 2      b   2   5 3      c   3   6 

i have feeling there should better base r solution this. however, can try apply , select (sample) random number between 2 columns.

df$third_column <- apply(df, 1, function(x) sample(x[2]:x[3], 1)) df  #  letter min max third_column #1        1   4            1 #2      b   2   5            4 #3      c   3   6            4