R by jojo

#---------------1--------------------

# Function to calculate sum and average
calculate_sum_and_average <- function(num1, num2) {
  sum <- num1 + num2
  average <- sum / 2
  return(list(sum = sum, average = average))
}

# Taking user input
num1 <- as.numeric(readline(prompt = "Enter the first number: "))
num2 <- as.numeric(readline(prompt = "Enter the second number: "))

# Calculating sum and average
result <- calculate_sum_and_average(num1, num2)

# Printing the results
cat("The sum of the two numbers is:", result$sum, "\n")
cat("The average of the two numbers is:", result$average, "\n")

#------------------2-------------------------------------

#area of the circle
a<-10
area<-3.14*a*a
print(area)

#----------------------3---------------------------------
# Largest among 3 numbers
a <- 10
b <- 39
c <- 9

if (b > a && b > c) {
  cat("b is greater\n")
} else if (a > b && a > c) {
  cat("a is greater\n")
} else {
  cat("c is greater\n")
}

#--------------------4----------------------------------

#factors of a number
number<-as.numeric(readline(prompt = "Enter number:"))
for(i in 1:number){
  if(number%%i==0){
    print(i)
  }
}

#--------------------------5-----------------------------
#sum of n natural number
n<-as.numeric(readline(prompt = "Enter the n:"))
sum<-0
for(i in 1:n){
  sum=sum+i
  
}
print(sum)

#---------------------------6-------------------------------
#fibno series
numberterms<-as.numeric(readline(prompt = "enter the n:"))
fibo<-function(n){
  a<-0
  b<-1
  for(i in 2:n){
    cat(a, " ")
a+b
    a<-b 
    b<-c
  }
}
fibo(numberterms)

#----------------------------7---------------------------------


# Function to check if a number is even or odd
check_even_odd <- function(num) {
  if (num %% 2 == 0) {
    return("Even")
  } else {
    return("Odd")
  }
}

# Taking user input
num <- as.numeric(readline(prompt = "Enter a number: "))

# Checking if the number is even or odd
result <- check_even_odd(num)

# Printing the result
cat("The number", num, "is", result, "\n")

#----------------------8-------------------------

# Load the magrittr package
library(magrittr)

# Function to check if a number is a palindrome
is_palindrome <- function(num) {
  str_num <- as.character(num)
  return(str_num == rev(strsplit(str_num, NULL)[[1]]) %>% paste(collapse = ""))
}

# Taking user input
num <- as.numeric(readline(prompt = "Enter a number: "))

# Checking if the number is a palindrome
if (is_palindrome(num)) {
  cat("The number", num, "is a palindrome.\n")
} else {
  cat("The number", num, "is not a palindrome.\n")
}

#------------------------9----------------------

# Function to calculate factorial
factorial <- function(num) {
  if (num == 0) {
    return(1)
  } else {
    return(num * factorial(num - 1))
  }
}

# Taking user input
num <- as.numeric(readline(prompt = "Enter a number: "))

# Calculating factorial
result <- factorial(num)

# Printing the result
cat("The factorial of", num, "is", result, "\n")

#--------------------------------11------------------------

# Function to reverse a string
reverse_string <- function(str) {
  return(paste(rev(strsplit(str, NULL)[[1]]), collapse = ""))
}

# Taking user input
str <- readline(prompt = "Enter a string: ")

# Reversing the string
reversed_str <- reverse_string(str)

# Printing the reversed string
cat("The reversed string is:", reversed_str, "\n")

#-------------------------------12--------------------------

# Function to check if a number is prime
is_prime <- function(num) {
  if (num <= 1) {
    return(FALSE)
  }
  for (i in 2:sqrt(num)) {
    if (num %% i == 0) {
      return(FALSE)
    }
  }
  return(TRUE)
}

# Taking user input
num <- as.numeric(readline(prompt = "Enter a number: "))

# Checking if the number is prime
if (is_prime(num)) {
  cat("The number", num, "is a prime number.\n")
} else {
  cat("The number", num, "is not a prime number.\n")
}

#---------------------------13-------------------------

# Function to calculate factorial
factorial <- function(num) {
  if (num == 0) {
    return(1)
  } else {
    return(num * factorial(num - 1))
  }
}

#----------------------------14-------------------------
# Function to calculate nCr
nCr <- function(n, r) {
  return(factorial(n) / (factorial(r) * factorial(n - r)))
}

# Taking user input
n <- as.numeric(readline(prompt = "Enter the value of n: "))
r <- as.numeric(readline(prompt = "Enter the value of r: "))

# Calculating nCr
result <- nCr(n, r)

# Printing the result
cat("The value of", n, "choose", r, "is", result, "\n")
#----------------------------15----------------------------

# Function to concatenate two strings
concatenate_strings <- function(str1, str2) {
  return(paste0(str1, str2))
}

# Taking user input
str1 <- readline(prompt = "Enter the first string: ")
str2 <- readline(prompt = "Enter the second string: ")

# Concatenating the strings
concatenated_str <- concatenate_strings(str1, str2)

# Printing the concatenated string
cat("The concatenated string is:", concatenated_str, "\n")