Go Program to Print Hollow Left Pascals Star Triangle

Write a Go program to print the hollow left pascals triangle star pattern using for loop. 

package main

import "fmt"

func main() {

	var i, j, k, row int

	fmt.Print("Enter Hollow Left Pascals Star Pattern Rows = ")
	fmt.Scanln(&row)

	fmt.Println("Hollow Left Pascals Star Triangle Pattern")

	for i = 1; i <= row; i++ {
		for j = row; j > i; j-- {
			fmt.Printf(" ")
		}
		for k = 1; k <= i; k++ {
			if k == 1 || k == i {
				fmt.Printf("*")
			} else {
				fmt.Printf(" ")
			}
		}
		fmt.Println()
	}

	for i = 1; i <= row-1; i++ {
		for j = 1; j <= i; j++ {
			fmt.Printf(" ")
		}
		for k = row - 1; k >= i; k-- {
			if k == row-1 || k == i {
				fmt.Printf("*")
			} else {
				fmt.Printf(" ")
			}
		}
		fmt.Println()
	}
}
Go Program to Print Hollow Left Pascals Star Triangle

This Go example prints the hollow left pascals triangle of a given character.

package main

import (
	"bufio"
	"fmt"
	"os"
)

func main() {

	reader := bufio.NewReader(os.Stdin)

	var i, j, k, row int

	fmt.Print("Enter Hollow Left Pascals Star Pattern Rows = ")
	fmt.Scanln(&row)

	fmt.Print("Character to Print in Hollow Left Pascals Triangle = ")
	ch, _, _ := reader.ReadRune()

	fmt.Println("Hollow Left Pascals Triangle Pattern")

	for i = 1; i <= row; i++ {
		for j = row; j > i; j-- {
			fmt.Printf(" ")
		}
		for k = 1; k <= i; k++ {
			if k == 1 || k == i {
				fmt.Printf("%c", ch)
			} else {
				fmt.Printf(" ")
			}
		}
		fmt.Println()
	}

	for i = 1; i <= row-1; i++ {
		for j = 1; j <= i; j++ {
			fmt.Printf(" ")
		}
		for k = row - 1; k >= i; k-- {
			if k == row-1 || k == i {
				fmt.Printf("%c", ch)
			} else {
				fmt.Printf(" ")
			}
		}
		fmt.Println()
	}
}
Enter Hollow Left Pascals Star Pattern Rows = 15
Character to Print in Hollow Left Pascals Triangle = $
Hollow Left Pascals Triangle Pattern
              $
             $$
            $ $
           $  $
          $   $
         $    $
        $     $
       $      $
      $       $
     $        $
    $         $
   $          $
  $           $
 $            $
$             $
 $            $
  $           $
   $          $
    $         $
     $        $
      $       $
       $      $
        $     $
         $    $
          $   $
           $  $
            $ $
             $$
              $

About Suresh

Suresh is the founder of TutorialGateway and a freelance software developer. He specialized in Designing and Developing Windows and Web applications. The experience he gained in Programming and BI integration, and reporting tools translates into this blog. You can find him on Facebook or Twitter.