a) A.java public class A { public static void main(String[] args) { for (int i = 0; i <= 8; i++) { for (int j = 0; j < i; j++) { System.out.print(\" # \"); } System.out.println(\" \"); } } } __________________________________________________ Output: # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # ____________________________________________________ b) B.java public class B { public static void main(String[] args) { for (int i = 8; i >= 1; i--) { for (int j = 0; j < i; j++) { System.out.print(\" # \"); } System.out.println(\" \"); } } } ______________________________________________ Output: # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # ____________________________________________________ C) C.java public class C { public static void main(String[] args) { for (int i = 0; i < 8; i++) { for (int j = 1; j <= 8; j++) { if (i < j) System.out.print(\"# \"); else System.out.print(\" \"); } System.out.println(); } } } ________________________________________________ Output: # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # ___________________________________________________ d) D.java public class D { public static void main(String[] args) { for (int i = 8; i >= 0; i--) { for (int j = 0; j < 8; j++) { if (i > j) System.out.print(\" \"); else System.out.print(\" #\"); } System.out.println(\" \"); } } } ___________________________________ Output: # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # _____________________________________________ e) E.java public class E { public static void main(String[] args) { int n = 7; for (int i = 0; i < n; i++) { for (int j = 0; j < n; j++) { if ( (i==0) || (j==0) || (i == n - 1) || (j == n - 1) ) { System.out.print(\" #\"); } else { System.out.print(\" \"); } } System.out.println(); } } } _______________________________________ Output: # # # # # # # # # # # # # # # # # # # # # # # # _____________________________________ f) package org.students; public class F { public static void main(String[] args) { int n = 7; for (int i = 0; i < n; i++) { for (int j = 0; j < n; j++) { if ( (i==j) || (i==0) || (i == n - 1)) { System.out.print(\" # \"); } else { System.out.print(\" \"); } } System.out.println(); } } } _______________________________________________ Output: # # # # # # # # # # # # # # # # # # # _____________________________________________ g) G.java public class G { public static void main(String[] args) { int n = 7; for (int i = 0; i < n; i++) { for (int j = 0; j < n; j++) { if ( (i==0) || (i == n - 1) || (i + j == n - 1) ) { System.out.print(\" # \"); } else { System.out.print(\" \"); } } System.out.println(); } } } _______________________________________ Output: # # # # # # # # # # # # # # # # # # # _____________________________________________ h) H.java public class H { public static void main(String[] args) { int n = 7; for (int i = 0; i < n; i++) { for (int j = 0; j < n; j++) { if((i == 0) || (i == j) || (i + j == n - 1) .

1. a)
A.java
public class A {
public static void main(String[] args) {
for (int i = 0; i <= 8; i++)
{
for (int j = 0; j < i; j++)
{
System.out.print(" # ");
}
System.out.println(" ");
}
}
}
__________________________________________________
Output:
#
# #
# # #
# # # #
# # # # #
# # # # # #
# # # # # # #
# # # # # # # #
____________________________________________________
b)
B.java
public class B {
public static void main(String[] args) {
for (int i = 8; i >= 1; i--)
{
for (int j = 0; j < i; j++)
{
System.out.print(" # ");

2. }
System.out.println(" ");
}
}
}
______________________________________________
Output:
# # # # # # # #
# # # # # # #
# # # # # #
# # # # #
# # # #
# # #
# #
#
____________________________________________________
C)
C.java
public class C {
public static void main(String[] args) {
for (int i = 0; i < 8; i++)
{
for (int j = 1; j <= 8; j++)
{
if (i < j)
System.out.print("# ");
else
System.out.print(" ");
}
System.out.println();
}
}
}
________________________________________________
Output:
# # # # # # # #

3. # # # # # # #
# # # # # #
# # # # #
# # # #
# # #
# #
#
___________________________________________________
d)
D.java
public class D {
public static void main(String[] args) {
for (int i = 8; i >= 0; i--)
{
for (int j = 0; j < 8; j++)
{
if (i > j)
System.out.print(" ");
else
System.out.print(" #");
}
System.out.println(" ");
}
}
}
___________________________________
Output:
#
# #
# # #
# # # #
# # # # #
# # # # # #
# # # # # # #

4. # # # # # # # #
_____________________________________________
e)
E.java
public class E {
public static void main(String[] args) {
int n = 7;
for (int i = 0; i < n; i++)
{
for (int j = 0; j < n; j++)
{
if ( (i==0) || (j==0) || (i == n - 1) || (j == n - 1) )
{
System.out.print(" #");
}
else
{
System.out.print(" ");
}
} System.out.println();
}
}
}
_______________________________________
Output:
# # # # # # #
# #
# #
# #
# #
# #
# # # # # # #
_____________________________________
f)
package org.students;
public class F {

5. public static void main(String[] args) {
int n = 7;
for (int i = 0; i < n; i++)
{
for (int j = 0; j < n; j++)
{
if ( (i==j) || (i==0) || (i == n - 1))
{
System.out.print(" # ");
}
else
{
System.out.print(" ");
}
} System.out.println();
}
}
}
_______________________________________________
Output:
# # # # # # #
#
#
#
#
#
# # # # # # #
_____________________________________________
g)
G.java
public class G {
public static void main(String[] args) {
int n = 7;
for (int i = 0; i < n; i++)
{
for (int j = 0; j < n; j++)

6. {
if ( (i==0) || (i == n - 1) || (i + j == n - 1) )
{
System.out.print(" # ");
}
else
{
System.out.print(" ");
}
} System.out.println();
}
}
}
_______________________________________
Output:
# # # # # # #
#
#
#
#
#
# # # # # # #
_____________________________________________
h)
H.java
public class H {
public static void main(String[] args) {
int n = 7;
for (int i = 0; i < n; i++)
{
for (int j = 0; j < n; j++)
{
if((i == 0) || (i == j) || (i + j == n - 1) || (i == n - 1))
{
System.out.print(" # ");
}

7. else
{
System.out.print(" ");
}
} System.out.println();
}
}
}
_____________________________________________
Output:
# # # # # # #
# #
# #
#
# #
# #
# # # # # # #
___________________________________________
I)
I.java
public class I {
public static void main(String[] args) {
int n = 7;
for (int i = 0; i < n; i++)
{
for (int j = 0; j < n; j++)
{
if((i == 0) || (j == 0) || (i == n - 1) || (j == n - 1)|| (i == j) || (i + j == n - 1))
{
System.out.print(" # ");
}
else
{
System.out.print(" ");
}

8. } System.out.println();
}
}
}
____________________________________________
Output:
# # # # # # #
# # # #
# # # #
# # #
# # # #
# # # #
# # # # # # #
___________________________________________________
Solution
a)
A.java
public class A {
public static void main(String[] args) {
for (int i = 0; i <= 8; i++)
{
for (int j = 0; j < i; j++)
{
System.out.print(" # ");
}
System.out.println(" ");
}
}
}
__________________________________________________
Output:
#

9. # #
# # #
# # # #
# # # # #
# # # # # #
# # # # # # #
# # # # # # # #
____________________________________________________
b)
B.java
public class B {
public static void main(String[] args) {
for (int i = 8; i >= 1; i--)
{
for (int j = 0; j < i; j++)
{
System.out.print(" # ");
}
System.out.println(" ");
}
}
}
______________________________________________
Output:
# # # # # # # #
# # # # # # #
# # # # # #
# # # # #
# # # #
# # #
# #
#
____________________________________________________
C)
C.java
public class C {

10. public static void main(String[] args) {
for (int i = 0; i < 8; i++)
{
for (int j = 1; j <= 8; j++)
{
if (i < j)
System.out.print("# ");
else
System.out.print(" ");
}
System.out.println();
}
}
}
________________________________________________
Output:
# # # # # # # #
# # # # # # #
# # # # # #
# # # # #
# # # #
# # #
# #
#
___________________________________________________
d)
D.java
public class D {
public static void main(String[] args) {
for (int i = 8; i >= 0; i--)
{
for (int j = 0; j < 8; j++)
{
if (i > j)
System.out.print(" ");

11. else
System.out.print(" #");
}
System.out.println(" ");
}
}
}
___________________________________
Output:
#
# #
# # #
# # # #
# # # # #
# # # # # #
# # # # # # #
# # # # # # # #
_____________________________________________
e)
E.java
public class E {
public static void main(String[] args) {
int n = 7;
for (int i = 0; i < n; i++)
{
for (int j = 0; j < n; j++)
{
if ( (i==0) || (j==0) || (i == n - 1) || (j == n - 1) )
{
System.out.print(" #");
}
else
{
System.out.print(" ");
}

12. } System.out.println();
}
}
}
_______________________________________
Output:
# # # # # # #
# #
# #
# #
# #
# #
# # # # # # #
_____________________________________
f)
package org.students;
public class F {
public static void main(String[] args) {
int n = 7;
for (int i = 0; i < n; i++)
{
for (int j = 0; j < n; j++)
{
if ( (i==j) || (i==0) || (i == n - 1))
{
System.out.print(" # ");
}
else
{
System.out.print(" ");
}
} System.out.println();
}
}
}
_______________________________________________

13. Output:
# # # # # # #
#
#
#
#
#
# # # # # # #
_____________________________________________
g)
G.java
public class G {
public static void main(String[] args) {
int n = 7;
for (int i = 0; i < n; i++)
{
for (int j = 0; j < n; j++)
{
if ( (i==0) || (i == n - 1) || (i + j == n - 1) )
{
System.out.print(" # ");
}
else
{
System.out.print(" ");
}
} System.out.println();
}
}
}
_______________________________________
Output:
# # # # # # #
#
#
#

14. #
#
# # # # # # #
_____________________________________________
h)
H.java
public class H {
public static void main(String[] args) {
int n = 7;
for (int i = 0; i < n; i++)
{
for (int j = 0; j < n; j++)
{
if((i == 0) || (i == j) || (i + j == n - 1) || (i == n - 1))
{
System.out.print(" # ");
}
else
{
System.out.print(" ");
}
} System.out.println();
}
}
}
_____________________________________________
Output:
# # # # # # #
# #
# #
#
# #
# #
# # # # # # #
___________________________________________

15. I)
I.java
public class I {
public static void main(String[] args) {
int n = 7;
for (int i = 0; i < n; i++)
{
for (int j = 0; j < n; j++)
{
if((i == 0) || (j == 0) || (i == n - 1) || (j == n - 1)|| (i == j) || (i + j == n - 1))
{
System.out.print(" # ");
}
else
{
System.out.print(" ");
}
} System.out.println();
}
}
}
____________________________________________
Output:
# # # # # # #
# # # #
# # # #
# # #
# # # #
# # # #
# # # # # # #
___________________________________________________