for (( i=0; i<N-1; i++ )); do
   tmp=$(( sorted_array[i+1] - sorted_array[i] ));
   if [ $tmp < $result ]; then result=$tmp fi
done

/tmp/Answer.sh: line 42: syntax error near unexpected token `done'at Answer.sh. on line 42
/tmp/Answer.sh: line 42: `done' at Answer.sh. on line 42

for (( i=0; i<N-1; i++ )); do
   tmp=$(( sorted_array[i+1] - sorted_array[i] ))
   if [ "$tmp" -lt "$result" ]; then result=$tmp; fi
done

for (( i=0; i<N-1; i++ )); do
   tmp=$(( sorted_array[i+1] - sorted_array[i] ))
   [ $tmp -lt $result ] && result=$tmp
done

for (( i=0; i<N-1; i++ ))
do
   tmp=$(( sorted_array[i+1] - sorted_array[i] ))
   if [ $tmp -lt $result ]
   then
      result=$tmp
   fi
done

for (( i=0; i<N-1; i++ )); do
   tmp=$(( sorted_array[i+1] - sorted_array[i] ))
   if [ $tmp -lt $result ]; then result=$tmp; fi
done