CamelCase.java

importjava.util.*; 
importjava.io.*;

classMain {

publicstaticStringStringChallenge(Stringstr) {
// code goes here
str = str.toLowerCase();
char[] charArray = str.toCharArray();

for(inti = 0; i < charArray.length; i++) {

if(!(charArray[i] <= 90 && charArray[i] >= 65 || charArray[i] <= 122 && charArray[i] >= 97)) {
charArray[i] = ' ';

if(charArray[i] == ' ' && charArray[i+1] <= 122 && charArray[i+1] >= 97){
charArray[i+1] -= 32;
 } 
 }
 }


Stringstr2 = String.copyValueOf(charArray);
str2 = str2.replaceAll("\s", "");

returnstr2;
 }

publicstaticvoidmain (String[] args) { 
// keep this function call here 
Scanners = newScanner(System.in);
System.out.print(StringChallenge(s.nextLine())); 

 }

}