将“goOd gooD stUdy dAy dAy up“,每个单词的首字母转换成大写其余都是小写字母(不许直接输出Good Good Study Day Day Up 要用代码实现)?

package cn.zxj.com;/*
将"goOd gooD stUdy dAy dAy up",
每个单词的首字母转换成大写其余都是小写字母
(不许直接输出Good Good Study Day Day Up 要用代码实现)?*/
class Test {public static void main(String[] args){String s = "goOd gooD stUdy dAy dAy up";String[] sArr = s.split(" ");String ns = "";for(int i = 0;i<sArr.length;i++){String substring1 = sArr[i].substring(0, 1).toUpperCase();String substring2 = sArr[i].substring(1).toLowerCase();String k = " ";if(i==sArr.length-1){k="";}ns+=(substring1+substring2+k);}System.out.println(s);System.out.println(s.length());System.out.println(ns);System.out.println(ns.length());}
}