R Programming: Create and Modify lists with Vectors and Matrices

Last update on December 21 2024 10:11:29 (UTC/GMT +8 hours)

Write a R program to create a list containing a vector, a matrix and a list and add element at the end of the list.

Sample Solution:

R Programming Code :

# Create a list containing a vector, a matrix, and another list
list_data <- list(c("Red","Green","Black"), matrix(c(1,3,5,7,9,11), nrow = 2),
list("Python", "PHP", "Java"))

# Print the original list
print("List:")
print(list_data)

# Add a new element at the end of the list
print("Add a new element at the end of the list:")
list_data[4] = "New element"

# Print the updated list with the new element
print("New list:")
print(list_data)

Output:

[1] "List:"
[[1]]
[1] "Red"   "Green" "Black"

[[2]]
     [,1] [,2] [,3]
[1,]    1    5    9
[2,]    3    7   11

[[3]]
[[3]][[1]]
[1] "Python"

[[3]][[2]]
[1] "PHP"

[[3]][[3]]
[1] "Java"


[1] "Add a new element at the end of the list:"
[1] "New list:"
[[1]]
[1] "Red"   "Green" "Black"

[[2]]
     [,1] [,2] [,3]
[1,]    1    5    9
[2,]    3    7   11

[[3]]
[[3]][[1]]
[1] "Python"

[[3]][[2]]
[1] "PHP"

[[3]][[3]]
[1] "Java"


[[4]]
[1] "New element"                         

Explanation:

• Create a List:
• list_data <- list(c("Red","Green","Black"), matrix(c(1,3,5,7,9,11), nrow = 2), list("Python", "PHP", "Java"))
• Creates a list named list_data with three elements:
• A vector of colors: "Red", "Green", "Black".
• A matrix with numbers arranged in 2 rows and 3 columns.
• A list of programming languages: "Python", "PHP", "Java".
• Print Original List:
• print("List:")
• print(list_data)
• Displays the original list contents.
• Add New Element to the List:
• print("Add a new element at the end of the list:")
• list_data[4] = "New element"
• Adds a new element "New element" to the end of the list_data.

• Print Updated List:
• print("New list:")
• print(list_data)
• Displays the updated list including the newly added element.

R Programming Code Editor:

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