vertical.java

package util;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import Printer.Printer;

public class Vertical {
	private Printer printer;
	
	public Vertical(Printer p) {
		this.printer = p;
	}
	

	// make data structure for words in sentences
	public List<ArrayList<String>> structureInput(String s) {
		List<ArrayList<String>> structuredText = new ArrayList<>();
		
		//count sentences
		List<String> sentences = new ArrayList<String>(Arrays.asList(s.split("\n")));
		int columns = sentences.size();
		
		for(int i=0;i<columns;i++) {
			structuredText.add(new ArrayList<String>(Arrays.asList(sentences.get(i).split(" "))));
		}
		
		return structuredText;
	}
	
	public String composeOutput(List<ArrayList<String>> structuredText) {
		
		int columns = structuredText.size();
		//count words in longest sentence
		//determine column width
		int rows = 0;
		int columnwidth=0;
		for (List<String> sentence : structuredText) {
			rows = rows < sentence.size() ? sentence.size() : rows;
			for(String word : sentence) {
				columnwidth = columnwidth < word.length() ? word.length() : columnwidth;
			}	
		}
		
		//compose output
		String out = "";
		//for each row
		for(int i=0; i<rows;i++) {
			//take one from each of the lists and append spaces to fill column
			for(int j=0;j<columns;j++) {
				String word = structuredText.get(j).isEmpty()?"":structuredText.get(j).remove(0) ;
				while(word.length()<columnwidth+2) {
					word += " ";
				}
				out += word;
			}
			out +="\n";
		}
		return out;
	}
	
	public void process(String s) {
		printer.println(composeOutput(structureInput(s)));
	}
}