xxxxxxxxxx
private static final String WHITESPACE = " ";
public String reverseWords(String str) {
String[] words = str.split(WHITESPACE);
StringBuilder reversedString = new StringBuilder();
for (String word: words) {
StringBuilder reverseWord = new StringBuilder();
for (int i = word.length() - 1; i >= 0; i--) {
reverseWord.append(word.charAt(i));
}
reversedString.append(reverseWord).append(WHITESPACE);
}
return reversedString.toString();
}