detects captial or not

Author: NirmalSilwal

Leetcode_August_Challenge/Day1_detectCapital.java

@@ -0,0 +1,42 @@
+package Leetcode_August_Challenge;
+
+/*
+ QUESTION DETAILS:
+ =================
+ 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:
+
+ All letters in this word are capitals, like "USA".
+ All letters in this word are not capitals, like "leetcode".
+ Only the first letter in this word is capital, like "Google".
+ Otherwise, we define that this word doesn't use capitals in a right way.
+
+ Note: The input will be a non-empty word consisting of uppercase and lowercase latin letters.
+
+ */
+
+public class Day1_detectCapital {
+
+	public static void main(String[] args) {
+
+		System.out.println(detectCapitalUse("USA")); // true
+		System.out.println(detectCapitalUse("leetcode"));// true
+		System.out.println(detectCapitalUse("Google")); // true
+		System.out.println(detectCapitalUse("FlaG"));// false
+
+	}
+
+	public static boolean detectCapitalUse(String word) {
+		if (word.equals(word.toUpperCase())) {
+			return true;
+		} else if (word.equals(word.toLowerCase())) {
+			return true;
+		} else if (Character.isUpperCase(word.charAt(0))
+				& word.substring(1).equals(word.substring(1).toLowerCase())) {
+			return true;
+		} else {
+			return false;
+		}
+	}
+}