Pattern Question ##5

Palakkgoyal
2 min readDec 5, 2022

QUESTION1:

21.    1
2 3
4 5 6
7 8 9 10
11 12 13 14 15

SOLUTION:

public class Hello{
public static void main(String[] args) {
Pattern(5);
}

static void Pattern(int n){
int count = 1;

for(int i = 1; i <= n; i++){

for(int j = 1; j <= i; j++){
System.out.print(count + " ");
count++;
}
System.out.println();
}
}
}



QUESTION2:

22.    1
0 1
1 0 1
0 1 0 1
1 0 1 0 1

SOLUTION:

public class Hello{
public static void main(String[] args) {
Pattern(5);
}

static void Pattern(int n){
boolean temp = true;

for(int i = 1; i <= n; i++){

temp = i%2 == 0 ? false : true;

for(int j = 1; j <= i; j++){
if(temp){
System.out.print(1 + " ");
temp = false;
}else{
System.out.print(0 + " ");
temp = true;
}
}
System.out.println();
}
}
}



QUESTION3:

24.    *        *
** **
* * * *
* * * *
* ** *
* ** *
* * * *
* * * *
** **
* *

SOLUTION:

public class Patterns {
public static void main(String[] args) {
Pattern(5);
}
static void Pattern(int n){
for(int i = 1; i <= 2*n; i++){

int c1 = i <= n ? i : 2*n-i+1;
int c2 = i <= n ? 2*n-i+1 : 2*n-c1+1;

for(int j = 1; j <= 2*n; j++){
if(j == 1 || j == c1 || j == 2*n || j == c2){
System.out.print("*");
}else{
System.out.print(" ");
}
}
System.out.println();
}
}

}

QUESTION4:

25.       *****
* *
* *
* *
*****

SOLUTION:

public class Patterns {
public static void main(String[] args) {
Pattern(5);
}
static void Pattern(int n){
for(int i = 1; i <= n; i++){

for(int j = 1; j <= n-i; j++){
System.out.print(" ");
}
for(int k = 1; k <= n; k++){
if(i == 1 || i == n || k == 1 || k == n){
System.out.print("*");
}else{
System.out.print(" ");
}
}
System.out.println();
}
}

}

Thank you for reading. If you have any queries then, please let me know in the comment section. I will surely be responsive toward it.

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Palakkgoyal

Solutions to all your coding related problems at one point. DSA question on daily basis and much more.