Golang React JS Technology Blog

Golang Program to print numbers with diamond pattern

Example

package main

import "fmt"

func main() {
	rows := 9
	space := rows / 2
	num := 1

	for i := 1; i <= rows; i++ {
		for j := 1; j <= space; j++ {
			fmt.Printf(" ")
		}
		count := num/2 + 1

		for k := 1; k <= num; k++ {
			fmt.Printf("%d", count)
			if k <= num/2 {
				count--
			} else {
				count++
			}
		}

		fmt.Println()

		if i <= rows/2 {
			space = space - 1
			num = num + 2
		} else {
			space = space + 1
			num = num - 2
		}
	}
}

Output

    1
   212
  32123
 4321234
543212345
 4321234
  32123
   212
    1
Most Helpful This Week
How to check if an item exists in Slice in Golang? Multiple-value <function> in single-value context error in Golang Contains, ContainsAny, Count and EqualFold string functions in Go Language Cannot call non-function <variable> error in Golang How append a slice to an existing slice in Golang? This sample program demonstrates how to decode a JSON string. Interface Accepting Address of the Variable in Golang Different ways for Integer to String Conversions How do you send an HTTP GET request with an HTTP client in Go? Go program to find MX records record of a domain