bash-pure, 103 bytes

Result

ERROR

Code [DL]

while read -s -n 1 C;do $((++a[C]));done;for i in {0..10};do for((j=a[i];j---1;));do write $i;done;done

stdin

3657055412654141824844536966798705523604055611387011881132826979639853918718774763056108376175314496

stdout

stderr

strace