Hollow Diamond Pattern (Pattern 6)

#1

import java.util.*;
public class Main {
public static void main(String args[]) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();

	int row = 1;
	int star = n/2+1;
	int space = 0;

	while(row<=n){
		int i = 1;
		while(i<=star){
			System.out.print("*"+"\t");
			i++;
		}
		int j = 1;
		while(j<=space){
			System.out.print("\t");
			j++;
		}
		int k = 1;
		while(k<=star){
			System.out.print("*"+"\t");
			k++;
		}
		if(row<n/2+1){
			star--;
			space+=2;
		} else{
			star++;
			space-=2;
		}
		row++;
		System.out.println();
	}
}

}

Bhaiya isme mere testcases pass ni hue… samajh hi ni aaraha kaha pr galti hai