RosettaCodeData/Task/Pangram-checker/UNIX-Shell/pangram-checker.sh
2023-07-01 13:44:08 -04:00

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function is_pangram {
typeset alphabet=abcdefghijklmnopqrstuvwxyz
typeset -l string=$*
while [[ -n $string && -n $alphabet ]]; do
typeset ch=${string%%${string#?}}
string=${string#?}
alphabet=${alphabet/$ch}
done
[[ -z $alphabet ]]
}