sorry for your eyes

PascalTrinagle.java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;
import java.util.stream.Collector;
import java.util.stream.Collectors;

public class PascalTrinagle {
    public static void print(String st){
        System.out.println(st);
    }
    public static void main(String[] args) {
        try(BufferedReader reader = new BufferedReader(new InputStreamReader(System.in))){
            pascalTriangle(Integer.parseInt(reader.readLine()));
        }catch (IOException e) {
            e.printStackTrace();
        }
    }
      public static void pascalTriangle(final int k){
        List<Integer> c = new ArrayList<>();
        c.add(1);
        for (int i = 0; i < k + 1; i++) {
            for (int j = k; j > i; j--)
                System.out.print(" ");

            print(c.stream().map(Objects::toString).
                    collect(Collectors.joining(" ")));

            if(i > k)
                return;

            List<Integer> out = new ArrayList<>();
            out.add(1);
            for (int j = 1, kSize = c.size(); j < kSize; j++)
                out.add(c.get(j - 1) + c.get(j));
            out.add(1);
            c = out;
        }
    }
}