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C

#include <stdio.h>

int main(void) {
  printf("Hello world!\n");
  return 0;
}

C++

#include <iostream>

int main(void) {
  std::cout << "Hello world!" << std::endl;
  return 0;
}

"""This is comments"""
def bubble_sort(items):
    for i in range(len(items)):
        for j in range(len(items) - 1 - i):
            if items[j] > items[j + 1]:
                items[j], items[j + 1] = items[j + 1], items[j]

def bubble_sort(items):
    for i in range(len(items)):
        for j in range(len(items) - 1 - i):
            if items[j] > items[j + 1]:
                items[j], items[j + 1] = items[j + 1], items[j]