常规思路：就是按照普通字符串拆分-添加完成的……
public class Solution {
public String
ReverseSentence(String str) {
if(str ==
null){
return null;}
if(str.trim().equals(
"")){
return str;
}
String
string = str;
String[] strings =
string.split(
" ");
StringBuilder sBuilder =
new StringBuilder();
for (
int i = strings.length-
1 ; i>=
0;i--) {
if(i ==
0){
sBuilder.append(strings[i]);
}
else {
sBuilder.append(strings[i]);
sBuilder.append(
" ");
}
}
String string2 = sBuilder.toString();
return string2;
}
}
