如何在不使用任何外部编程语言(awk等)的情况下打印bash中最常出现的单词？)

#!/bin/bash

# 读取输入的文本
read -p "请输入文本: " text

# 将文本转换为小写并去除标点符号
text=$(echo "$text" | tr '[:upper:]' '[:lower:]' | sed 's/[^a-zA-Z ]//g')

# 将文本按空格分割为单词数组
words=($text)

# 统计每个单词出现的次数
declare -A wordCount
for word in "${words[@]}"; do
  ((wordCount[$word]++))
done

# 找出出现次数最多的单词
maxCount=0
for count in "${wordCount[@]}"; do
  if ((count > maxCount)); then
    maxCount=$count
  fi
done

# 打印出现次数最多的单词
for word in "${!wordCount[@]}"; do
  if ((wordCount[$word] == maxCount)); then
    echo "出现次数最多的单词是: $word"
  fi
done