Solution: count digits
examples/count-digits/count_digits.go
package main import "fmt" func main() { count := [10]int{} digits := [...]int{3, 7, 6, 7, 9, 1, 3, 7, 8, 3, 1, 7, 0, 1, 2, 3} fmt.Println(digits) for i := 0; i < len(digits); i++ { //fmt.Println(digits[i]) count[digits[i]]++ } for i := 0; i < 10; i++ { fmt.Printf("%d: %d\n", i, count[i]) } }