Function to evaluate set of five years
In this exercise, we will write a function to evaluate any given set of five years, and check whether any individual has cashed in all five years.
We assume 6000 players, and each player will be represented by a number from 1 through 6000. Under the assumption that 10% of all players will cash, the input to the function will be a matrix with five columns, one for each year, and 600 rows, one per cashing player.
Questo esercizio fa parte del corso
Probability Puzzles in R
Istruzioni dell'esercizio
- Use the
Reducefunction to find the intersection of all five years. - Check whether the intersection contains any elements.
- Specify the conditional to indicate when
FALSEshould be returned.
Esercizio pratico interattivo
Prova a risolvere questo esercizio completando il codice di esempio.
check_for_five <- function(cashed){
# Find intersection of five years
all_five <- Reduce(___)
# Check intersection
if(___){
return(TRUE)
# Specify when to return FALSE
} ___ {
return(FALSE)
}
}