Last list item

Last list item is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.

Task

List = [6, 81, 243, 14, 25, 49, 123, 69, 11]
Find two smallest items, summarize them, add to the end of list and delete them.
Repeat it until list contains one element.
Show the steps and last item on this page.

Go

Translation of: Wren

<lang go>package main

import (

   "fmt"
   "sort"

)

func main() {

   a := []int{6, 81, 243, 14, 25, 49, 123, 69, 11}
   for len(a) > 1 {
       sort.Ints(a)
       a = append(a, a[0]+a[1])
       a = a[2:]
   }
   fmt.Println("Last item is", a[0], "\b.")

}</lang>

Output:

Last item is 621.

Ring

<lang ring> see "working..." + nl

List = [6,81,243,14,25,49,123,69,11] Temp = []

while true

     Temp = sort(List)
     first = Temp[1]
     second = Temp[2]
     ind1 = find(List,first)
     ind2 = find(List,second)
     del(List,ind2)
     del(List,ind1)
     sum = first + second 
     add(List,sum)
     if len(List) = 1
        exit
     ok
     showList(first,second,List)

end

see "Last item is: " +List[1] + nl see "done..." + nl

func showList(first,second,List)

    see "two smallest number is = " + first + " " + second + nl
    see "List = "
    showArray(List)     

func showArray(array)

    txt = ""
    see "["
    for n = 1 to len(array)
        txt = txt + array[n] + ","
    next
    txt = left(txt,len(txt)-1)
    txt = txt + "]"
    see txt + nl

</lang>

Output:

working...
two smallest number is = 6 11
List = [81,243,14,25,49,123,69,17]
two smallest number is = 14 17
List = [81,243,25,49,123,69,31]
two smallest number is = 25 31
List = [81,243,49,123,69,56]
two smallest number is = 49 56
List = [81,243,123,69,105]
two smallest number is = 69 81
List = [243,123,69,150]
two smallest number is = 69 123
List = [243,69,192]
two smallest number is = 69 192
List = [243,261]
Last item is: 504
done...

Wren

<lang ecmascript>var a = [6, 81, 243, 14, 25, 49, 123, 69, 11]

while (a.count > 1) {

   a.sort()
   a.add(a[0] + a[1])
   a = a[2..-1]

}

System.print("Last item is %(a[0]).")</lang>

Output:

Last item is 621.