_1805.java

packagecom.fishercoder.solutions.secondthousand;

importjava.util.HashSet;
importjava.util.Set;

publicclass_1805 {
publicstaticclassSolution1 {
publicintnumDifferentIntegers(Stringword) {
StringBuildersb = newStringBuilder();
for (inti = 0; i < word.length(); i++) {
if (!Character.isDigit(word.charAt(i))) {
sb.append(" ");
 } else {
sb.append(word.charAt(i));
 }
 }
String[] numbers = sb.toString().split("\\s+");
Set<String> set = newHashSet<>();
for (Stringnum : numbers) {
if (!num.isEmpty()) {
set.add(num.replaceFirst("^0+(?!$)", ""));
 }
 }
returnset.size();
 }
 }
}