Counting the number of elements with the values of x in a vector

Question

I have a vector of numbers:

numbers <- c(4,23,4,23,5,43,54,56,657,67,67,435,
         453,435,324,34,456,56,567,65,34,435)

How can I hav

Answer 1

Using table but without comparing with names:

numbers <- c(4,23,4,23,5,43,54,56,657,67,67,435)
x <- 67
numbertable <- table(numbers)
numbertable[as.character(x)]
#67 
# 2 

table is useful when you are using the counts of different elements several times. If you need only one count, use sum(numbers == x)