package string;

import java.util.regex.MatchResult;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import static java.lang.Integer.parseInt;

import static java.lang.String.valueOf;

public class Question33 {

public static void main(String[] args) {

String word = "rt043vf543po90lp765pop1000";

int sum = getSumUsingPattern(word);

int sum2 = getSumUsingPattern_Lambdas(word);

int sum3 = getSumUsingPattern_TryCatch(word);

System.out.println(sum);

System.out.println(sum2);

System.out.println(sum3);

}

private static int getSumUsingPattern_TryCatch(String word) {

int sum = 0;

for(int i=0;i<word.length();i++) {

try {

sum += parseInt(valueOf(word.charAt(i)));

} catch (NumberFormatException ignored) { }

}

return sum;

}

private static int getSumUsingPattern(String word) {

Matcher matcher = Pattern.compile("(\\d)").matcher(word);

int sum = 0;

while (matcher.find()) {

sum += parseInt(matcher.group());

}

return sum;

}

private static int getSumUsingPattern_Lambdas(String word) {

return Pattern.compile("(\\d)").matcher(word).results().map(MatchResult::group)

.mapToInt(Integer::parseInt).sum();

}

}