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About R

R is a programming language for statistical computing and graphics.

About C++

C++ is a general-purpose programming language created by Bjarne Stroustrup as an extension of the C programming language, or "C with Classes".

Palindrome Check Example: R vs C++

Palindrome Check in R

isPalindrome <- function(str) {
  clean <- gsub("[^[:alnum:]]", "", tolower(str))
  clean == paste(rev(strsplit(clean, "")[[1]]), collapse="")
}

# Example usage
print(isPalindrome("A man, a plan, a canal: Panama")) # TRUE
print(isPalindrome("race a car")) # FALSE

Palindrome Check in C++

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

bool isPalindrome(string str) {
    string clean;
    // Keep alphanumeric chars and convert to lowercase
    for(char c : str) {
        if(isalnum(c)) {
            clean += tolower(c);
        }
    }
    
    string reversed = clean;
    reverse(reversed.begin(), reversed.end());
    return clean == reversed;
}

int main() {
    cout << boolalpha;
    cout << isPalindrome("A man, a plan, a canal: Panama") << endl; // true
    cout << isPalindrome("race a car") << endl; // false
    return 0;
}

Bubble Sort Example: R vs C++

Bubble Sort in R

bubbleSort <- function(arr) {
  n <- length(arr)
  for (i in 1:n) {
    for (j in 1:(n-i)) {
      if (arr[j] > arr[j+1]) {
        temp <- arr[j]
        arr[j] <- arr[j+1]
        arr[j+1] <- temp
      }
    }
  }
  return(arr)
}

arr <- c(64, 34, 25, 12, 22, 11, 90)
print(bubbleSort(arr))

Bubble Sort in C++

#include <iostream>
#include <vector>
using namespace std;

void bubbleSort(vector<int>& arr) {
    int n = arr.size();
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < n - i - 1; j++) {
            if(arr[j] > arr[j + 1]) {
                swap(arr[j], arr[j + 1]);
            }
        }
    }
}

int main() {
    vector<int> arr = {64, 34, 25, 12, 22, 11, 90};
    bubbleSort(arr);
    
    for(int num : arr) {
        cout << num << " ";
    }
    return 0;
}