Question

Write the count the number of even numbers in a vector using r

Answer 1

Answer:

am working through the Euler Problems, and the problem is to sum the even terms in a Fibonacci sequence up to the length where the last term is < 4e6. I got it eventually but the following method of counting the even numbers did not work, and I am curious as to why.

First, this method of counting even numbers from a sequence works:

numbers <- 1:32 N <- length(numbers) total <- rep(0,N) for (i in numbers){ if(i %% 2 == 0) total[i] <-i } sum(total) #272

Answer 2

If the remainder when num is divided by 2 equals to 0, it's an even number. If not, it's an odd integer.

Program to check if the input number is odd or even.

# A number is even if division by 2 give a remainder of 0.

# If remainder is 1, it is odd.

num = as.integer(readline(prompt="Enter a number: "))

if((num %% 2) = 0) {print(paste(num,"is Even"))} else {print(paste(num,"is Odd"))}

Output 1

Enter a number: 89

[1] "89 is Odd"

Output 2

Enter a number: 0

[1] "0 is Even"

In this program, we ask the user for the input (an integer) which is stored in num variable.

If the remainder when num is divided by 2 equals to 0, it's an even number. If not, it's an odd integer.

To learn more about R programming

https://brainly.in/question/13131191

T o learn more about even number

https://brainly.in/question/34846119

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