向后排序字典的shell脚本？

#!/bin/bash

declare -A dictionary
dictionary["apple"]=1
dictionary["banana"]=2
dictionary["cherry"]=3
dictionary["date"]=4

# 获取字典中的所有键
keys=("${!dictionary[@]}")

# 对键进行向后排序
for ((i=0; i<${#keys[@]}; i++))
do
  for ((j=i+1; j<${#keys[@]}; j++))
  do
    if [[ ${keys[$i]} > ${keys[$j]} ]]
    then
      temp=${keys[$i]}
      keys[$i]=${keys[$j]}
      keys[$j]=$temp
    fi
  done
done

# 输出排序后的键和对应的值
for key in "${keys[@]}"
do
  echo "Key: $key, Value: ${dictionary[$key]}"
done