Star Pyramid in Java: Explanation & Practice

Problem summary

Print a centered pyramid of stars with n rows.

Starter code

public class Main {
    public static void main(String[] args) {
        int n = 3; // Test case 1
        
        // Print centered pyramid:
        //   *
        //  ***
        // *****
    }
}

Expected output and test cases

• 3-row pyramid

    *
   ***
  *****

• 2-row pyramid

   *
  ***

• 4-row pyramid

     *
    ***
   *****
  *******

Hints

1. Row i has (2*i - 1) stars
2. Print (n - i) spaces before stars
3. Outer loop for rows, inner loops for spaces and stars

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• Practice Sum of Series in Java
• Practice Number Pattern in Java
• Practice Digit Frequency in Java

Practice all Control Flow exercises · Run this idea in the Java compiler