To sort an array in R, you can use the sort function. The sort function sorts the elements of a vector or a matrix by ascending order by default. Here are some examples:
Sorting a vector:
# Create a vector
x <- c(5, 3, 8, 1, 6)
# Sort the vector in ascending order
sort(x)
Output:
[1] 1 3 5 6 8
Sorting a matrix:
# Create a matrix
m <- matrix(c(5, 3, 8, 1, 6, 2), ncol = 2)
# Sort the rows of the matrix in ascending order
t(apply(m, 1, sort))
Output:
[,1] [,2]
[1,] 3 5
[2,] 1 8
[3,] 2 6
Sorting a data frame:
# Create a data frame
df <- data.frame(x = c(5, 3, 8, 1, 6), y = c("c", "b", "e", "a", "d"))
# Sort the data frame by x in ascending order
df[order(df$x), ]
Output:
x y
4 1 a
2 3 b
1 5 c
5 6 d
3 8 e
You can also sort in descending order by specifying decreasing = TRUE.