Reverse Words In A String

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/** *  * <p> * ClassName SolutionReverseWordsInAString * </p> * <p> * Description Given an input string, reverse the string word by word. *  * For example, Given s = "the sky is blue", return "blue is sky the". * </p> *  * @author wangxu [email protected] *         <p> *         Date 2014-9-11 下午01:55:53 *         </p> * @version V1.0 *  */public class SolutionReverseWordsInAString {public static String reverseWords(String s) {if ("".equals(s.trim())) {return "";}String str[] = s.trim().split(" ");String result = "";int length = str.length - 1;for (int i = 0; i <= length / 2; i++) {if (!"".equals(str[i])) {String temp = str[i];str[i] = str[length - i];str[length - i] = temp;}}for (int i = 0; i <= length; i++) {if (!"".equals(str[i])) {if (i == length) {result += str[i];} else {result += str[i] + " ";}}}return result;}public static void main(String[] args) {System.out.println(reverseWords("   a   b "));}}

Reverse Words In A String