Leetcode 520. Detect Capital

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

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

1. All letters in this word is capitals, like "USA".
2. All letters in this word is not capitals, like "Leetcode".
3. Only the first letter of this word was capital if it had more than one letter, like "Google".

Otherwise, we define that this word doesn ' t use capitals in a right-to-do.

Example 1:

Input: "USA"output:true

Example 2:

Input: "FlaG"output:false

Note:the input is a non-empty word consisting of uppercase and lowercase Latin letters.

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Idea: In Java to determine whether 2 strings are equal cannot use "= =", to use "equal". Character comparisons can be made with "= =".

Code:

1  Public class Solution {2      Public Boolean Detectcapitaluse (String word) {3         return Word = = word.touppercase () | | Word = = Word.tolowercase () | | (Word.length () > 1 && character.touppercase (Word.charat (0)) = = Word.charat (0) && word.substring (1). toLowerCase (). Equals (word.substring (1))); 4     }5 }

Leetcode 520. Detect Capital