Write a R program to select second element of a given nested list

1. Introduction

This R program demonstrates how to select the second element from a given nested list. A nested list is a list that contains other lists as elements.

2. Program Steps

1. Create a nested list with several elements.

2. Select the second element of the nested list.

3. Print the selected element.

3. Code Program

# Step 1: Create a nested list
nested_list <- list(first = list(a = 1, b = 2), second = list(c = 3, d = 4), third = list(e = 5, f = 6))

# Step 2: Select the second element of the nested list
second_element <- nested_list$second

# Step 3: Print the selected element
print("Second element of the nested list:")
print(second_element)

Output:

Second element of the nested list:
$c
[1] 3
$d
[1] 4

Explanation:

1. list(first = list(a = 1, b = 2), second = list(c = 3, d = 4), third = list(e = 5, f = 6)): Creates a nested list with three elements, where each element is itself a list.

2. nested_list$second: Selects the second element of the nested list.

3. print("Second element of the nested list:"): Prints a message indicating the second element of the nested list.

4. print(second_element): Displays the content of the selected second element.