--- Stack (Starting) ---
010: "h"
009: "e"
008: "l"
007: "l"
006: "o"
005: " "
004: "w"
003: "o"
002: "r"
001: "l"
000: "d"
--- Stack (List Form) ---
000: ["d","l","r","o","w"," ","o","l","l","e","h"]
--- Stack (Sorted Form) ---
000: [" ","d","e","h","l","l","l","o","o","r","w"]