detect-capital

java

python

python3

mysql

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oraclesql

csharp

javascript

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racket

erlang

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cangjie

Algorithms

We define the usage of capitals in a word to be right when one of the following cases holds:

<ul>
	<li>All letters in this word are capitals, like <code>&quot;USA&quot;</code>.</li>
	<li>All letters in this word are not capitals, like <code>&quot;leetcode&quot;</code>.</li>
	<li>Only the first letter in this word is capital, like <code>&quot;Google&quot;</code>.</li>
</ul>

Given a string <code>word</code>, return <code>true</code> if the usage of capitals in it is right.

&nbsp;
Example 1:
<pre>Input: word = "USA"
Output: true
</pre>Example 2:
<pre>Input: word = "FlaG"
Output: false
</pre>
&nbsp;
Constraints:

<ul>
	<li><code>1 &lt;= word.length &lt;= 100</code></li>
	<li><code>word</code> consists of lowercase and uppercase English letters.</li>
</ul>

detectCapitalUse

Detect Capital

Capitalize the Title

capitalize-the-title

将标题首字母大写

Count the Number of Special Characters II

count-the-number-of-special-characters-ii

统计特殊字母的数量 II

Count the Number of Special Characters I

count-the-number-of-special-characters-i

统计特殊字母的数量 I

String

我们定义，在以下情况时，单词的大写用法是正确的：

<ul>
	<li>全部字母都是大写，比如 <code>"USA"</code> 。</li>
	<li>单词中所有字母都不是大写，比如 <code>"leetcode"</code> 。</li>
	<li>如果单词不只含有一个字母，只有首字母大写，&nbsp;比如&nbsp;<code>"Google"</code> 。</li>
</ul>

给你一个字符串 <code>word</code> 。如果大写用法正确，返回 <code>true</code> ；否则，返回 <code>false</code> 。

&nbsp;

示例 1：

<pre>
输入：word = "USA"
输出：true
</pre>

示例 2：

<pre>
输入：word = "FlaG"
输出：false
</pre>

&nbsp;

提示：

<ul>
	<li><code>1 &lt;= word.length &lt;= 100</code></li>
	<li><code>word</code> 由小写和大写英文字母组成</li>
</ul>