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Added some beginner friendly pattern in java #1324

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Added some beginner friendly pattern in java #1324

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Binary file added different patterns in JAVA/patterns.class
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224 changes: 224 additions & 0 deletions different patterns in JAVA/patterns.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,224 @@
import java.util.*;

public class patterns{

// ******
// * *
// * *
// * *
// ******
public static void hollow_rectengle(int row, int col) {
for (int i = 1; i <= row; i++) {
for (int j = 1; j <= col; j++) {
if (i == 1 || i == row || j == 1 || j == col) {
System.out.print("*");
}
else {
System.out.print(" ");
}
}
System.out.println();
}
}

// *
// **
// ***
// ****
// *****
public static void inverted_triangle(int row){
for(int i=1;i<=row;i++){
for(int j = row-1;j>=i;j--){
System.out.print(" ");
}
for(int j = 1;j<=i;j++){
System.out.print("*");
}
System.out.println();
}
}

// 1234
// 123
// 12
// 1
public static void inverted_halfpyramid_num(int n){
for(int i =n;i>=1;i--){
for(int j=1;j<=i;j++){
System.out.print(j);
}
System.out.println();
}
}

// 1
// 2 3
// 4 5 6
// 7 8 9 10
public static void flyods_triangle(int n){
int num=1;
for(int i =1;i<=n;i++){
for(int j=1;j<=i;j++){
System.out.print(num + " ");
num++;
}
System.out.println();
}
}

// 1
// 01
// 101
// 0101
public static void zero_one_triangle(int n){
for(int i =1;i<=n;i++){
for(int j=1;j<=i;j++){
if((i+j)%2==0){
System.out.print("1");
}
else{
System.out.print("0");
}

} System.out.println();
}
}
// * *
// ** **
// *** ***
// ********
// ********
// *** ***
// ** **
// * *
public static void butterfly(int n){
for(int i=1;i<=n;i++){
for(int j =1;j<=i;j++){
System.out.print("*");
}
for(int j=1;j<=2*(n-i);j++){
System.out.print(" ");
}
for(int j =1;j<=i;j++){
System.out.print("*");
}
System.out.println();
}
for(int i =n;i>=1;i--){
for(int j =1;j<=i;j++){
System.out.print("*");
}
for(int j=1;j<=2*(n-i);j++){
System.out.print(" ");
}
for(int j =1;j<=i;j++){
System.out.print("*");
}
System.out.println();


}
}

// *****
// *****
// *****
// *****
// *****
public static void rohmbus(int n){
for(int i = 1;i<=n;i++){
for(int j = 1;j<=n-i;j++){
System.out.print(" ");
}
for(int j = 1;j<=n;j++){
System.out.print("*");

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

// *
// ***
// *****
// *******
// *********
// *********
// *******
// *****
// ***
// *
public static void kite(int n){
for(int i = 1;i<=n;i++){
for(int j =1;j<=n-i;j++){
System.out.print(" ");
}
for(int j =1;j<=(2*i)-1;j++){
System.out.print("*");
}
System.out.println();
}

for(int i = n;i>=1;i--){
for(int j =1;j<=n-i;j++){
System.out.print(" ");
}
for(int j =1;j<=(2*i)-1;j++){
System.out.print("*");
}
System.out.println();
}

}

// 1
// 2 2
// 3 3 3
// 4 4 4 4
// 5 5 5 5 5
public static void num_pyramid(int n){
int num=1;
for(int i = 1;i<=n;i++){
for(int j =1;j<=n-i;j++){
System.out.print(" ");
}
for(int j =1;j<=i;j++){
System.out.print(num +" ");
}
num++;
System.out.println();
}

}
public static void main(String args[]){
hollow_rectengle(5, 6);
inverted_triangle(5);
inverted_halfpyramid_num(4);
flyods_triangle(4);
zero_one_triangle(4);
butterfly(4);
rohmbus(5);
hollow_rohmbus(3);
kite(5);
num_pyramid(5);
}
}