Print pyramid pattern: 1 3*2 4*5*6 pattern in java

Table of Contents [hide]

Problem
Solution
Java program to print 1 3*2 4*5*6 pattern in java

In this post, we will see how to print the following pyramid pattern.

Problem

Input : n = 4
Output :
1
3*2
4*5*6
10*9*8*7Input : n = 5
Output :
1
3*2
4*5*6
10*9*8*7
11*12*13*14*15

Solution

If you notice the pattern we need to print odd rows in increasing order and even rows in decreasing order.
We will use two for loops and three variables to achieve this pattern.
Three variables:

row: It denotes to current row
col: It is the number which you actually prints
num: It actually controls the number upto which you are going to print in a row.

Java program to print 1 32 45*6 pattern in java

package org.arpit.java2blog;

// Java implementation to print the 
// following pyramid pattern 
public class PyramidPattern { 

    /* method to print the following pyramid 
    // pattern
     *  1
        3*2
        4*5*6
        10*9*8*7
     */
    static void printPattern(int n) 
    { 
        int col, num = 0; 

        // loop for row
        for (int row = 1; row <= n; row++) { 

            // when row number is odd,then print in increasing order.
            if (row % 2 != 0) { 

                // printing in ascending order
                for (col = num + 1; col < num + row; col++) 
                    System.out.print(col + "*"); 
                System.out.println(col++); 

                // update value of 'num' 
                num = col; 
            } 

         // when row number is odd,then print in decending order.
            else { 

                // update value of 'num' 
                num = num + row - 1; 

                // print numbers with the '*' in 
                // decreasing order 
                for (col = num; col > num - row + 1; col--) 
                    System.out.print(col + "*"); 
                System.out.println(col); 
            } 
        } 
    } 

    // Driver program to test above 
public static void main(String args[]) 
    { 
        int n = 5; 
        printPattern(n); 
    } 
}

package org.arpit.java2blog;

// Java implementation to print the

// following pyramid pattern

public class PyramidPattern {

/* method to print the following pyramid

// pattern

* 1

3*2

4*5*6

10*9*8*7

static void printPattern(int n)

{

int col, num = 0;

// loop for row

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

// when row number is odd,then print in increasing order.

if (row % 2 != 0) {

// printing in ascending order

for (col = num + 1; col < num + row; col++)

System.out.print(col + "*");

System.out.println(col++);

// update value of 'num'

num = col;

}

// when row number is odd,then print in decending order.

else {

// update value of 'num'

num = num + row - 1;

// print numbers with the '*' in

// decreasing order

for (col = num; col > num - row + 1; col--)

System.out.print(col + "*");

System.out.println(col);

}

// Driver program to test above

public static void main(String args[])

{

int n = 5;

printPattern(n);

}

Time Compexity: O((n (n + 1)) / 2)
That’s all about printing the pattern 1 32 456 pattern in java.

Was this post helpful?

Let us know if this post was helpful. Feedbacks are monitored on daily basis. Please do provide feedback as that\'s the only way to improve.

Print pyramid pattern: 1 32 45*6 pattern in java

Problem

Solution

Java program to print 1 32 45*6 pattern in java

Was this post helpful?

Author

Leave a Reply Cancel reply

Categories

Popular Posts

Let’s be Friends

Problem

Solution

Java program to print 1 3*2 4*5*6 pattern in java

Was this post helpful?

Related posts:

Share this

Author

Leave a Reply Cancel reply

Let’s be Friends

Java program to print 1 32 45*6 pattern in java