Ladder Pattern in Java

by Online Tutorials Library July 22, 2022

Ladder Pattern in Java

In the previous sections, we have discussed many pattern programs. In this section, we will create Java program to print ladder with n steps.

Using for Loop

The following program prints the ladder with the gap between two side rails being 3 spaces.

LadderPatternExample1.java

  import java.util.Scanner;  public class LadderPatternExample1  {  public static void main(String args[])   {  Scanner sc=new Scanner(System.in);  System.out.print(“Enter the number of steps: ”  );  //reads an integer form the user  //n is the number of steps in ladder  int n=sc.nextInt();  for(int i=1;i<=n*3+2;i++)  {  for(int j=1;j<=5;j++)  {  if(i%3==0)  System.out.print(“*”);  else if(j==1||j==5)  System.out.print(“*”);  else  System.out.print(” “);  }  //throws cursor to the new line  System.out.println();  }  }  }  

Output:

Ladder Pattern in Java

Using Function

LadderPatternExample2.java

  public class LadderPatternExample2  {  //function to print the desired ladder Pattern  static void ladder(int n)  {  for (int i = 0; i <= n; i++)  {  //prints the sub-pattern-1  //n+1 time  System.out.println(“*   *”);  System.out.println(“*   *”);  if (i < n)  {  //prints the sub-pattern-2 .i.e step of ladder  //n times  System.out.println(“*****”);  }  }  }  //driver Code  public static void main(String args[])  {  //n is the number of steps  int n = 7;  //function calling  ladder(n);  }  }  

Output:

Ladder Pattern in Java

Let’s see another ladder pattern that prints ladder of numbers.

Ladder Number Pattern

Let’s see the approach to print ladder number pattern.

Approach:

Read or initialize the number of steps and store it in a variable row.
Define a for loop to print the row value and number for each row. Each iteration prints two side numbers.
Define an if statement and check for condition (r< row). If the condition returns true, print stair row.

Let’s implement the above steps in a Java program.

LadderPatternExample3.java

  import java.util.*;  public class LadderPatternExample3  {      public static void main(String args[])     {     //creating object   Scanner sc = new Scanner(System.in);  System.out.print(“Enter the number of steps: “);  //reads number of steps from the user  int row = sc.nextInt();  //for loop   for (int i = 0; i <= row; i++)  {  //prints the sub-pattern-1 row+1 time  System.out.println(i+”   “+i);  System.out.println(i+”   “+i);  //prints the sub-pattern-2 row times  if (i < row)  //prints row of stairs  System.out.println(i+””+i+””+i+””+i+i);  }  }  }  

Output:

Ladder Pattern in Java

Next TopicORM Tools in Java

Ladder Pattern in Java

Ladder Pattern in Java

Using for Loop

Using Function

Ladder Number Pattern

Java Testing Tools

Longest Common Subsequence in Java

You may also like