C :

#include<stdio.h>
int n;
int a[20],b[20];
int main()
{
	scanf("%d",&n);
	for(int i=1;i<=n;i++)
	{
	scanf("%d",&a[i]);
	int m=1;
	b[i]=a[i];
	while(b[i]!=0&&b[i]>=10)
	{
	m++;
	b[i]/=10;
	}
	b[i]=a[i];
	for(int j=4;j>m;j--)
	b[i]*=10;
	}
	for(int i=1;i<n;i++)
	for(int j=i+1;j<=n;j++)
	{
	if(b[i]>b[j])
	{
		int x=a[i],y=b[i];
		a[i]=a[j];
		a[j]=x;
		b[i]=b[j];
		b[j]=y;
	}
	if(b[i]==b[j]&&a[i]>a[j])
	{
		int x=a[i],y=b[i];
		a[i]=a[j];
		a[j]=x;
		b[i]=b[j];
		b[j]=y;
	}
	}
	for(int i=1;i<=n;i++)
	printf("%d ",a[i]);
	return 0;
} 

C++ :

#include <bits/stdc++.h>

using namespace std;

int main(){
	int n;
	cin>>n;
	string a[n+1];
	for(int i=1;i<=n;i++){
		cin>>a[i];
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<n-i+1;j++){
			if(a[j]>a[j+1]){
				string x=a[j];
				a[j]=a[j+1];
				a[j+1]=x;
			}
		}
	}
	for(int i=1;i<=n;i++)cout<<a[i]<<" ";
	return 0;
}

Java :

import java.util.*;
public class Main{
	public static void showArr(int[]arr){
		for(int i =0;i<arr.length;i++){
			System.out.print(arr[i]+" ");
		}
	}
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int n=in.nextInt();
		int []arr=new int[n];
		for(int i=0;i<arr.length;i++){
			arr[i]=in.nextInt();
		}
		
		for(int i=0;i<arr.length-1;i+=2){
			if(arr[i]>arr[i+1]){
				int c=arr[i];
				arr[i]=arr[i+1];
				arr[i+1]=c;
			}
			
		}
		showArr(arr);
	}

}