capitalizeAllWord method
capitalize first letter of every word
Implementation
String capitalizeAllWord() {
var result = this[0].toUpperCase();
for (int i = 1; i < length; i++) {
if (this[i - 1] == " ") {
result = result + this[i].toUpperCase();
} else {
result = result + this[i].toLowerCase();
}
}
return result;
}