Submission #63022619

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import java.util.Arrays;
import java.util.Comparator;
import java.util.Scanner;
public class Main {
    
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in); 
        Integer N = scanner.nextInt();
        scanner.nextLine();
        String arr[] = new String[N];
        for (int i = 0; i < N; i++) {
            arr[i] = scanner.nextLine();   
        }
        
        Arrays.sort(arr, new Comparator<String>() {
 
            @Override
            public int compare(String o1, String o2) {
                return o1.length() - o2.length();
 
 
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import java.util.Arrays;
import java.util.Comparator;
import java.util.Scanner;

public class Main {
    
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in); 
        Integer N = scanner.nextInt();
        scanner.nextLine();
        String arr[] = new String[N];

        for (int i = 0; i < N; i++) {
            arr[i] = scanner.nextLine();   
        }
        
        Arrays.sort(arr, new Comparator<String>() {
 
            @Override
            public int compare(String o1, String o2) {
                return o1.length() - o2.length();
            }
        });

        StringBuffer buffer = new StringBuffer();
        for (int i = 0; i < arr.length; i++) {
            buffer.append(arr[i]);
        }

        System.out.print(buffer.toString());
    }
        
}

Submission Info

Judge Result