Golang : Simple histogram example

This is a simple histogram program written in Golang. Can be useful in situations where you want to roughly assess the probability distribution of a given variable by depicting the frequencies of observations occurring in certain ranges of values.

Here you go!

 package main

 import (
 "fmt"
 )

 const SIZE = 10

 var n = [SIZE]int{20, 7, 11, 13, 1, 3, 30, 4, 9, 2}

 func main() {
 fmt.Printf("%sss\n", "Element", "Value", "Histogram")

 for i := 0; i <= SIZE-1; i++ {
 fmt.Printf("%7dd ", i, n[i])

 for j := 1; j <= n[i]; j++ {
 //fmt.Printf("%c", '*')
 fmt.Printf("%c", '∎')
 }
 fmt.Println()
 }
 }

Output:

Element Value Histogram

  0 20 ∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎
  
 1 7 ∎∎∎∎∎∎∎
  
 2 11 ∎∎∎∎∎∎∎∎∎∎∎
  
 3 13 ∎∎∎∎∎∎∎∎∎∎∎∎∎
  
 4 1 ∎
  
 5 3 ∎∎∎
  
 6 30 ∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎∎
  
 7 4 ∎∎∎∎
  
 8 9 ∎∎∎∎∎∎∎∎∎
  
 9 2 ∎∎
  

Reference:

https://en.wikipedia.org/wiki/Histogram