Exercise: statistics

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• Take the following program, factor out a function called stats that will get a slice of numbers and return the min, max, total, and average.

• Write test that will check the results

examples/statistics/statistics.go

package main

import "fmt"

func main() {
    numbers := [...]int{2, 3, 5, -1, 1, 8}
    fmt.Println(numbers)
    if len(numbers) == 0 {
        fmt.Println("We cannot provide stats on empty set of numbers")
        return
    }

    total := 0
    min := numbers[0]
    max := numbers[0]
    for _, num := range numbers {
        if num < min {
            min = num
        }
        if num > max {
            max = num
        }
        total += num
    }
    //fmt.Println(min(numbers))
    fmt.Printf("Total: %v\n", total)
    average := float32(total) / float32(len(numbers))
    fmt.Printf("Average: %v\n", average)
    fmt.Printf("Min: %v\n", min)
    fmt.Printf("Max: %v\n", max)
}