TypeScript Tutorials

How to print Hollow Pyramid Pattern in TypeScript

◀ Previous Next ▶

How to print Hollow Pyramid Pattern in TypeScript ?

Answer

To print a hollow pyramid pattern in TypeScript, you can follow similar logic as JavaScript using nested loops.

✐ Examples

1 Hollow Pyramid Pattern (Height: 5) in TypeScript

In this example,

Set the number of rows for the pyramid.
Use nested loops: one for rows, one for spaces, and one for stars.
In the inner loops, print spaces for the spaces between stars and print stars for the pyramid edges.
Adjust conditions to print stars only at the pyramid edges and spaces elsewhere to create the hollow effect.
Print each row to create the hollow pyramid pattern.

TypeScript Program

function printHollowPyramid(rows: number): void {
    for (let i = 1; i <= rows; i++) {
        let pattern = '';
        for (let j = i; j < rows; j++) {
            pattern += '  ';
        }
        for (let k = 1; k < (2 * i); k++) {
            if (k === 1 || k === (2 * i - 1) || i === rows) {
                pattern += '* ';
            } else {
                pattern += '  ';
            }
        }
        console.log(pattern);
    }
}
printHollowPyramid(5);

Output

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

Summary

In this tutorial, we learned How to print Hollow Pyramid Pattern in TypeScript language with well detailed examples.