public static boolean process(String str){
int count = 1;
for(int index = 0;index < str.length() - 1;++index){
if(str.charAt(index) == str.charAt(index + 1)){
++count;
str = str.substring(0,index) + str.substring(index + 2);
index -= 2;
}
}
System.out.println(str);
return count % 2 != 0;
}
