C :

#include<stdio.h>
int main(){
	int n,i,x,y;
	scanf("%d",&n);
	int a[n+1];
	for(i=0;i<n;i++){
		scanf("%d",&a[i]);
	}
	scanf("%d%d",&x,&y);
	for(i=n-1;i>=x-1;i--){
		a[i+1] = a[i];
	}
	a[x-1] = y;
	for(i=0;i<n+1;i++){
		printf("%d ",a[i]);
	}
	return 0;
}

C++ :

#include <iostream>
 
using namespace std;
 
int main(){
    int n,i,t,x,y;
    cin>>n;
    int a[n + 1];
    for (i = 0;i < n;i++){
        cin>>a[i];
    }
    cin>>x;
    x--;
    cin>>y;
    for (i = n - 1;i >= x;i--){
        a[i + 1] = a[i];
    }
    a[x] = y;
    for (i = 0;i < n + 1;i++){
        cout<<a[i]<<" ";
    }
}

Pascal :

var
a:array[1..1000]of longint;
n,i,x,y:longint;
begin
readln(n);
for i:=1 to n do
begin
read(a[i]);
end;
readln;
readln(x);
readln(y);
for i:=1 to x-1 do
write(a[i],' ');
write(y,' ');
for i:=x to n-1 do
write(a[i],' ');
writeln(a[n]);
readln;
end.

Java :

import java.util.Scanner;

public class Main{
	public static void main(String[] args){	

    Scanner sc = new Scanner(System.in);
    int n=sc.nextInt();
    int a[] = new int[n+1];
    for(int i=0;i<a.length-1;i++) {
    a[i] = sc.nextInt();
    }
    //待插入的下标
    int j = sc.nextInt()-1;
    for(int i= a.length-2;i>=0;i--) {
    if(i>=j) {
    a[i+1] = a[i];
    }
    }
    a[j] = sc.nextInt();
    for(int i=0 ; i<a.length ;i++) {
    System.out.println(a[i]);
    } 
  
}
}

Python :

n=int(input())
l1=list(map(int,input().split()))
x=int(input())
y=int(input())
l1.insert(x-1,y)
for i in l1:
    print(i,end=' ')