Ez all!
I have a question how to decrypt text uses letter frequency analysis. I have code which count the letters, but what i need to do after that. Can anybody help me to write a code. VERY NEEDED! My code now:

#!/usr/bin/awk -f
BEGIN { FS="" }
{
for (i=1; i <= NF; i++) {
if ($i != " ")
letter[tolower($i)]++
}
}
END {
j = 1
for (i in letter) {
ind[j] = i
j++
}
n = asort(ind)
for (i = 1; i <= n; i++)


printf "%s: %s\n", ind[i], letter[ind[i]]
}