Java 当单词的第一个字母为大写时从字符串中删除单词

我想从带大写字母的字符串中删除带大写字母的单词，但我不知道该怎么做

Original String: "bob Likes Cats"
New String: "bob"

---

您可以尝试以下操作：

String original = "bob Likes Cats";
String[] words = original.split(" ");

//String of the final word.
String finalword = "";

for(String word : words){
    if(Character.isUpperCase(word.charAt(0)){
        //Word has a capital letter
    }else {
        //Add the word.
        finalword += word + " ";
    }
}

finalword

现在是一个带有小写字母的

字符串

请注意，
finalword
结尾可能包含额外的空格。
要删除末尾的空格，请执行以下操作：

finalword = finalword.substring(0,finalword.length()-1);

由于句子/字符串中的单词似乎由空格分隔，因此您的算法可能类似于：

将空格上的字符串拆分为单词
检查每个单词，并保存其中没有大写字符的单词
创建一个新字符串，将所有保存的单词粘在一起，用空格分隔
您还没有指定正在使用的编程语言，因此我将以PHP为例提供一种

<?php

// Your input string.
$input = 'bob Likes Cats';

/*
    1. preg_split() the input on one or more consecutive whitespace characters.
    2. array_filter() walks over every element returned by preg_split. The callback determines whether to filter the element or not.
    3. array_filter()'s callback tests every word for an uppercase ([A-Z]) character.
*/
$filtered = array_filter(
    preg_split('/[\s]+/', $input),
    function ($word)
    {
        // preg_match() returns 1 if a match was made.
        return (preg_match('/[A-Z]/', $word) !== 1);
    }
);

// Glue back together the unfiltered words.
$output = implode(' ', $filtered);

// Outputs: bob
echo $output;

您尝试过什么？您的问题是什么？可能有很多方法可以做到这一点。。。您可以将原始字符串拆分为单词数组，然后通过省略包含大写字母的单词来重建字符串…顺便说一下，您的问题被否决，因为您没有表现出任何努力。。。
<?php

// Your input string.
$input = 'bob Likes Cats';

/*
    1. preg_split() the input on one or more consecutive whitespace characters.
    2. array_filter() walks over every element returned by preg_split. The callback determines whether to filter the element or not.
    3. array_filter()'s callback tests every word for an uppercase ([A-Z]) character.
*/
$filtered = array_filter(
    preg_split('/[\s]+/', $input),
    function ($word)
    {
        // preg_match() returns 1 if a match was made.
        return (preg_match('/[A-Z]/', $word) !== 1);
    }
);

// Glue back together the unfiltered words.
$output = implode(' ', $filtered);

// Outputs: bob
echo $output;