simple java problem

[analoveu]

I need a piece of code that solve the following problem:
I wanna print this shape

1
1 2 1
1 2 3 2 1
1 2 3 4 3 2 1
1 2 3 2 1
1 2 1
1

[r035198x]

I need a piece of code that solve the following problem:
I wanna print this shape

1
1 2 1
1 2 3 2 1
1 2 3 4 3 2 1
1 2 3 2 1
1 2 1
1

What have you tried so far?

[analoveu]

some one help me ,just I need the code that perform this problem
I thought about it ,I develped the code that solve the upper part but it wasn't logical solution

[analoveu]

for(int i=1;i<=4;i++)
{
for(int k=1;k<=i;k++)
{
System.out.print(k);
for(int j=k ; j!=1 && k==i && k!=1;)
System.out.print(--j);
}

System.out.print("/n");
}

for(i=i-1;i!=1;i--)
{
for(k=1;k<=i;k++)
{
System.out.print(k);
for(j=k;j!=1&&k==i-1&&k!=1;)
System.out.print(--j);
}

System.out.print("/n");
}

[analoveu]

the part of the bold code it perform the upper part , but the remainder of the code won't perform because the next for won't take the value of the first for ,so it will not solve the problem

[r035198x]

for(int i=1;i<=4;i++)
{
for(int k=1;k<=i;k++)
{
System.out.print(k);
for(int j=k ; j!=1 && k==i && k!=1;)
System.out.print(--j);
}

System.out.print("/n");
}

for(i=i-1;i!=1;i--)
{
for(k=1;k<=i;k++)
{
System.out.print(k);
for(j=k;j!=1&&k==i-1&&k!=1;)
System.out.print(--j);
}

System.out.print("/n");
}

Next time you post code please use code tags.

Up then down

class DiamondNumbers {
     public static void main(String[] args) {
         int n = 4;
         int i = 1;
         while(i < 5) {
             for(int k = 0; k < n;k++) {
                 System.out.print(" ");
             }
                for(int l = 1; l < i; l++) {
                 System.out.print(""+l);
             }
             for(int l = i; l > 0; l--) {
                   System.out.print(""+l);
             }
             i++;
             n--;
             System.out.println();
         }
 
         //Reverse
         i = 3;
         n = 2;
         while(i > 0) {
              for(int k = 0; k < n;k++) {
                  System.out.print(" ");
              }
             for(int l = 1; l < i; l++) {
                  System.out.print(""+l);
              }
              for(int l = i; l > 0; l--) {
                    System.out.print(""+l);
              }
              i--;
              n++;
              System.out.println();
         }
    }
}

Up and down combined (sort of)

class DiamondNumbers {
     public static void main(String[] args) {
         int n = 4;
         int i = 1;
         int x = -1;
         boolean up = true;
 
         while((i < 6 && up) || (i > 0 && !up)) {
             for(int k = 0; k < n;k++) {
                 System.out.print(" ");
             }
                for(int l = 1; l < i; l++) {
                 System.out.print(""+l);
             }
             for(int l = i; l > 0; l--) {
                   System.out.print(""+l);
             }
             if(up) {
                 i++;
                  n--;
             }
             else {
                 i--;
                 n++;
             }
             System.out.println();
             if(i == 5) {
                 up = false;
                 n = 2;
                 i = 3;
             }
         }
 
    }
}