package main

import (
    "fmt"
    "math/rand"
    "time"
)

// rollAllOnes returns the number of rounds it takes for a player
// to roll all 1s when rolling 4 dice
func rollAllOnes() (numberOfRolls int) {
    roundCounter := 0
    for {
        roundCounter++
        die1 := rand.Intn(6) + 1
        die2 := rand.Intn(6) + 1
        die3 := rand.Intn(6) + 1
        die4 := rand.Intn(6) + 1
        if die1 == 1 && die2 == 1 && die3 == 1 && die4 == 1 {
            numberOfRolls = roundCounter
            return
        }
    }
}

// main displays the result of rollAllOnes() into a comma delimited table of
// NUM_ROWS rows and NUM_COLS columns
func main() {
    rand.Seed(time.Now().UTC().UnixNano())
    NUM_ROWS := 20
    NUM_COLS := 25
    for i := 0; i < NUM_ROWS; i++ {
        for j := 0; j < NUM_COLS; j++ {
            numberOfRolls := rollAllOnes()
            fmt.Print(numberOfRolls, ",")
        }
        fmt.Println()
    }
}