R Programming: Update last element in a List with solution

Last update on December 21 2024 10:11:30 (UTC/GMT +8 hours)

Write a R program to create a list containing a vector, a matrix and a list and update the last element.

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"))

# Print the current state of the list
print("List:")
print(list_data)

# Print a message indicating the next operation
print("Update the third element of the list:")

# Update the third element of the list with a new value
list_data[3] = "R programming"

# Print the updated state of the list
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"


[1] "Update the second element of the list:"
[1] "New list:"
[[1]]
[1] "Red"   "Green" "Black"

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

[[3]]
[1] "R programming"                         

Explanation:

• Create a List:
• list_data <- list(c("Red","Green","Black"), matrix(c(1,3,5,7,9,11), nrow = 2), list("Python"))
• Constructs a list named list_data with three elements:
• A vector of strings: "Red", "Green", "Black".
• A matrix with the numbers 1, 3, 5, 7, 9, 11 arranged in 2 rows.
• A list containing a single string: "Python".
• Print the List:
• print("List:")
• Outputs the label "List:".
• print(list_data)
• Displays the contents of list_data.
• Update the Third Element:
• print("Update the third element of the list:")
• Outputs the label "Update the third element of the list:".
• list_data[3] = "R programming"
• Replaces the third element of list_data (the list containing "Python") with a new string "R programming".
• Print the Updated List:
• print("New list:")
• Outputs the label "New list:".
• print(list_data)
• Displays the updated list_data, showing the new third element.

R Programming Code Editor:

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