shell數組（產生不同的隨機數）

#!/bin/bash
#
declare -a ARRAY
read -p "Please input num[1-39]：" EMENUM
#對比新生成的隨機數是否重復
function COMELE {
  for J in `seq 1 ${#ARRAY[@]}`;do
    if [ $1 -eq ${ARRAY[$J]} ]; then
      return 1
    fi
  done
  return 0
}

for I in `seq 1 $EMENUM`; do
  while true; do
    ELEMENT=$[$RANDOM%40]
    COMELE $ELEMENT
    if [ $? -eq 0 ]; then
    break
    fi
  done
  ARRAY[$I]=$ELEMENT

  echo "${ARRAY[$I]}"
  done