Go Program to Print Hollow Right Angled Triangle Star Pattern

Write a Go program to print the hollow right angled triangle star pattern using for loop. 

package main

import "fmt"

func main() {

	var i, j, row int

	fmt.Print("Enter Hollow RightTriangle Star Rows = ")
	fmt.Scanln(&row)

	fmt.Println("Hollow Right Angled Triangle Star Pattern")

	for i = 1; i <= row; i++ {
		for j = 1; j <= i; j++ {
			if i == 1 || i == row || j == 1 || j == i {
				fmt.Printf("*")
			} else {
				fmt.Printf(" ")
			}
		}
		fmt.Println()
	}
}
Go Program to Print Hollow Right Angled Triangle Star Pattern

This Go example prints the hollow right angled triangle pattern of a given character.

package main

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

func main() {

	reader := bufio.NewReader(os.Stdin)

	var i, j, row int

	fmt.Print("Enter Hollow Right Triangle Star Rows = ")
	fmt.Scanln(&row)

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

	fmt.Println("Hollow Right Angled Triangle Star Pattern")

	for i = 1; i <= row; i++ {
		for j = 1; j <= i; j++ {
			if i == 1 || i == row || j == 1 || j == i {
				fmt.Printf("%c", ch)
			} else {
				fmt.Printf(" ")
			}
		}
		fmt.Println()
	}
}
Enter Hollow Right Triangle Star Rows = 15
Character to Print in Hollow Right Triangle = #
Hollow Right Angled Triangle Star 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.