Given a word, you need to judge whether the usage of capitals in it is right or not.

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

1. All letters in this word are capitals, like "USA".
2. All letters in this word are not capitals, like "leetcode".
3. Only the first letter in this word is capital if it has more than one letter, like "Google".

Otherwise, we define that this word doesn‘t use capitals in a right way.

Example 1:

Input: "USA"
Output: True

Example 2:

Input: "FlaG"
Output: False

Note: The input will be a non-empty word consisting of uppercase and lowercase latin letters.

分析：分別判斷三種條件是否滿足：全大寫，全小寫，首字母大寫;

JAVA CODE

class
 
 Solution {
    public boolean detectCapitalUse(String word) {
        if(word.equals(word.toUpperCase()))
            return true;
        if(word.equals(word.toLowerCase()))
            return true;
        if(word.substring(1,word.length()).equals(word.substring(1,word.length()).toLowerCase())&&(Character.toUpperCase(word.charAt(0))==word.charAt(0)))
            
 
return true;
        return false;
    }
}

Detect Capital