How to print Hour Glass Pattern in TypeScript - Step by Step Examples

◀ Previous Next ▶

How to print Hour Glass Pattern in TypeScript ?

Answer

To print an Hourglass Pattern in TypeScript, we follow similar logic to JavaScript using nested loops.

✐ Examples

1 Hourglass Pattern

In this example,

We define a function printHourglass that takes the desired number of rows n as a parameter.
We use two nested for loops, where the outer loop runs from n to 1 and the inner loops control the spaces and stars in each row.
Within the inner loops, we calculate the number of spaces and stars based on the current row number to form the hourglass pattern.

TypeScript Program

function printHourglass(n: number): void {
    for (let i = n; i >= 1; i--) {
        let spaces = ' '.repeat(n - i);
        let stars = '*'.repeat(2 * i - 1);
        console.log(spaces + stars);
    }
    for (let i = 2; i <= n; i++) {
        let spaces = ' '.repeat(n - i);
        let stars = '*'.repeat(2 * i - 1);
        console.log(spaces + stars);
    }
}

// Example usage
printHourglass(5);

Output

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

Summary

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