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Day28_RegEx, Patterns, and Intro to Databases
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Day28_RegEx, Patterns, and Intro to Databases
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import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import java.util.stream.*;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.toList;
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
int N = Integer.parseInt(bufferedReader.readLine().trim());
List<String> list=new ArrayList<>();
String Regrex=".+@gmail\\.com$";
Pattern pattern=Pattern.compile(Regrex);
IntStream.range(0, N).forEach(NItr -> {
try {
String[] firstMultipleInput = bufferedReader.readLine().replaceAll("\\s+$", "").split(" ");
String firstName = firstMultipleInput[0];
String emailID = firstMultipleInput[1];
Matcher matcher=pattern.matcher(emailID);
if(matcher.find()){
list.add(firstName);
}
}
catch (IOException ex) {
throw new RuntimeException(ex);
}
});
Collections.sort(list);
for(String names:list){
System.out.println(names);
bufferedReader.close();
}
}
}