Power Calculation with Recursion in R

R Programming: Control Structure Exercise-17 with Solution

Write a R program function to calculate the power of a number using recursion.

Sample Solution :

R Programming Code :

# Define a function to calculate the power of a number using recursion
power <- function(base, exponent) {
    # Base case: If exponent is 0, return 1
    if (exponent == 0) {
        return(1)
    } else if (exponent == 1) {
        return(base)
    } else {
        # Recursive case: Calculate power using recursion
        return(base * power(base, exponent - 1))
    }
}

# Test the function with example inputs
base <- 2
exponent <- 3
result <- power(base, exponent)

# Print the result
cat(base, "raised to the power of", exponent, "is:", result, "\n")

Output:

2 raised to the power of 3 is: 8           

Explatnaion:

In the exercise above,

• The "power()" function takes two parameters: 'base' and 'exponent'.
• It checks for the base case: if the 'exponent' is 0, it returns 1 (since any number raised to the power of 0 is 1).
• If the 'exponent' is 1, it returns the 'base' itself.
• If neither of the base cases is met, it calculates the power using recursion by multiplying the 'base' with the result of "power(base, exponent - 1)".
• The function is then tested with an example input (base = 2 and exponent = 3), and the result is printed to the console.

R Programming Code Editor:

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