【编程题】计算器的新功能

　　题目：计算器的新功能

　　附上提交通过的Java版代码

题目描述

当你学一些可视化程序设计语言时，老师经常会让你设计并且编程做出一个计算器，这时也许你会仿照windows系统自带的计算器外观和功能去设计，但是现在老师要你多做出一个有新功能的计算器，实现当输入一个数时，能够将这个数分解成一个或多个素因子乘积的形式，并按素因子的大小排列显示出来。大家对计算器中数的表示应该很清楚的。下面显示出了0 — 9这十个数字的表示形式。每个数字都占据5 * 3大小的字符区域

你能实现这个新功能吗？试试看吧！

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Computer {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        while(input.hasNextInt()){
            int n = input.nextInt();
            List deposeList = despose(n);
//            System.out.println(deposeList);
            printResult(deposeList);
        }
    }

    private static void printResult(List deposeList) {
        int number = deposeList.size();
        String[] line1 = {" - ","   "," - "," - ","   "," - "," - "," - "," - "," - "};
        String[] line2 = {"| |","  |","  |","  |","| |","|  ","|  ","  |","| |","| |"};
        String[] line3 = {"   ","   "," - "," - "," - "," - "," - ","   "," - "," - "};
        String[] line4 = {"| |","  |","|  ","  |","  |","  |","| |","  |","| |","  |"};
        String[] line5 = {" - ","   "," - "," - ","   "," - "," - ","   "," - "," - "};
        StringBuffer printLine1 = new StringBuffer();
        StringBuffer printLine2 = new StringBuffer();
        StringBuffer printLine3 = new StringBuffer();
        StringBuffer printLine4 = new StringBuffer();
        StringBuffer printLine5 = new StringBuffer();
        for(int i = 0; i < number; i++){
            String stringNum = deposeList.get(i).toString();
//            System.out.println(stringNum);
            for(int j = 0; j<stringNum.length(); j++){
                printLine1.append(line1[stringNum.charAt(j)-'0']);
                printLine2.append(line2[stringNum.charAt(j)-'0']);
                printLine3.append(line3[stringNum.charAt(j)-'0']);
                printLine4.append(line4[stringNum.charAt(j)-'0']);
                printLine5.append(line5[stringNum.charAt(j)-'0']);
            }
            printLine1.append(" ");
            printLine2.append(" ");
            printLine3.append("*");
            printLine4.append(" ");
            printLine5.append(" ");
        }
        int printLen = printLine1.length();
        printLine1.deleteCharAt(printLen-1);
        printLine2.deleteCharAt(printLen-1);
        printLine3.deleteCharAt(printLen-1);
        printLine4.deleteCharAt(printLen-1);
        printLine5.deleteCharAt(printLen-1);
        System.out.println(printLine1);
        System.out.println(printLine2);
        System.out.println(printLine3);
        System.out.println(printLine4);
        System.out.println(printLine5);
    }

    private static List despose(int n) {
        List deposeList = new ArrayList();
        int primer = 2;
        while(primer <= n){
            if(primer == n){
                deposeList.add(primer);
                break;
            }
            else if(n % primer == 0){
                deposeList.add(primer);
                n = n/primer;
            }
            else{
                primer++;
            }    
        }
        return deposeList;
        
    }

}

　　有更好的思路，欢迎指教~