Turn a sorted list of ints into number ranges in Go

humanizeIntArray

package main

import (
	"fmt"
)

func main() {
	var statusCodes []int = []int{100,101,102,103,104,105,106,107,110,111,112,115,119,120,121,124}
	var output []string
	
	idx := 0
	for {
		start := statusCodes[idx]
		prev := start
		for {
			idx++
			if idx >= len(statusCodes) {
				break	
			}
			if statusCodes[idx] - prev != 1 {
				// Check if it's a single number
				if statusCodes[idx-1] == start {
					output = append(output, fmt.Sprintf("%d", start))	
				} else {
					output = append(output, fmt.Sprintf("%d-%d", start, statusCodes[idx-1]))
				}
				break
			}
			prev = statusCodes[idx]
		}
		if idx >= len(statusCodes) {
			break
		}
	}
	fmt.Println(output)
}