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About Delphi

Delphi is an event-driven programming language based on Object Pascal.

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: Delphi vs C++

Palindrome Check in Delphi

function IsPalindrome(const S: string): Boolean;
var
  CleanStr: string;
  I: Integer;
begin
  // Remove non-alphanumeric characters and convert to lowercase
  CleanStr := '';
  for I := 1 to Length(S) do
    if S[I].IsLetterOrDigit then
      CleanStr := CleanStr + S[I].ToLower;

  // Check if the string is equal to its reverse
  Result := CleanStr = ReverseString(CleanStr);
end;

// Example usage
WriteLn(IsPalindrome('A man, a plan, a canal: Panama'));  // True
WriteLn(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: Delphi vs C++

Bubble Sort in Delphi

procedure BubbleSort(var Arr: array of Integer);
var
  I, J, Temp: Integer;
begin
  for I := High(Arr) downto Low(Arr) do
    for J := Low(Arr) to I - 1 do
      if Arr[J] > Arr[J + 1] then
      begin
        Temp := Arr[J];
        Arr[J] := Arr[J + 1];
        Arr[J + 1] := Temp;
      end;
end;

// Example usage
var
  Arr: array of Integer;
begin
  SetLength(Arr, 7);
  Arr[0] := 64; Arr[1] := 34; Arr[2] := 25; Arr[3] := 12;
  Arr[4] := 22; Arr[5] := 11; Arr[6] := 90;

  WriteLn('Original array:');
  PrintArray(Arr);

  BubbleSort(Arr);

  WriteLn('Sorted array:');
  PrintArray(Arr);
end;

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;
}