package main

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

// first creator
func rslice(size int, r1 *rand.Rand) []int {
	rtn := make([]int, size)
	for i := 0; i < size; i++ {
		rtn[i] = r1.Intn(100)
	}
	return rtn
}

func maxSubslice(slc []int, siz int) []int {
	if siz > len(slc) {
		return nil
	}
	if siz == len(slc) {
		return slc
	}
	bestLoc := -1
	bestSum := 0
	for i := 0; i < (len(slc) - siz); i++ {
		summ := 0
		for j := 0; j < siz; j++ {
			summ += slc[i+j]
		}
		//fmt.Printf("%d %d\n", i, summ)
		if i == 0 || summ > bestSum {
			bestLoc = i
			bestSum = summ
		}
	}
	return slc[bestLoc : bestLoc+siz]
}

func main() {
	s1 := rand.NewSource(time.Now().UnixNano())
	r1 := rand.New(s1)

	rr := rslice(10, r1)
	fmt.Println(rr)
	subSli := maxSubslice(rr, 2)
	fmt.Println(subSli)
}