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public text v1 · immutable#!/bin/sh -u
if test $# -ne 1
then
echo "Usage: $0 <u0>"
exit 1
fi
Un=$1
while test $Un -ne 1
do
if test `expr $Un % 2` -eq 0
then
Un=`expr $Un / 2`
else
Un=`expr ($Un * 3)+1`
fi
done#!/bin/sh -u
if test $# -ne 1
then
echo "Usage: $0 <u0>"
exit 1
fi
Un=$1
while test $Un -ne 1
do
if test `expr $Un % 2` -eq 0
then
Un=`expr $Un / 2`
else
Un=`expr ($Un * 3)+1`
fi
done