R Programming: Create an Array of Two 3x3 Matrices from Vectors

R Programming: Array Exercise-2 with Solution

Write a R program to create an array of two 3x3 matrices each with 3 rows and 3 columns from two given two vectors.

Sample Solution :

R Programming Code :

# Print a message indicating that two vectors of different lengths will be displayed
print("Two vectors of different lengths:")

# Create a vector v1 with elements 1, 3, 4, and 5
v1 =  c(1,3,4,5)

# Create a vector v2 with elements 10, 11, 12, 13, 14, and 15
v2 =  c(10,11,12,13,14,15)

# Print the contents of the vector v1
print(v1)

# Print the contents of the vector v2
print(v2)

# Combine vectors v1 and v2 and create a 3-dimensional array result with dimensions 3x3x2
result = array(c(v1,v2),dim = c(3,3,2))

# Print a message indicating that the new array will be displayed
print("New array:")

# Print the contents of the 3-dimensional array result
print(result)

Output:

[1] "Two vectors of different lengths:"
[1] 1 3 4 5
[1] 10 11 12 13 14 15
[1] "New array:"
, , 1

     [,1] [,2] [,3]
[1,]    1    5   12
[2,]    3   10   13
[3,]    4   11   14

, , 2

     [,1] [,2] [,3]
[1,]   15    4   11
[2,]    1    5   12
[3,]    3   10   13                         

Explanation:

• print("Two vectors of different lengths:")
• Prints a message indicating that two vectors of different lengths are about to be displayed.
• v1 = c(1,3,4,5)
• Creates a vector v1 with the elements 1, 3, 4, and 5.
• v2 = c(10,11,12,13,14,15)
• Creates a vector v2 with the elements 10, 11, 12, 13, 14, and 15.
• print(v1)
• Prints the contents of the vector v1.
• print(v2)
• Prints the contents of the vector v2.
• result = array(c(v1,v2),dim = c(3,3,2))
• Combines vectors v1 and v2 into a single vector and creates a 3-dimensional array result with dimensions 3x3x2. The combined vector is used to fill the array, which will contain two 3x3 matrices.
• print("New array:")
• Prints a message indicating that the new array will be displayed next.
• print(result)
• Prints the contents of the 3-dimensional array result, showing the two 3x3 matrices formed from the combined vectors.

R Programming Code Editor:

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