生成中文书籍章节

GenChapterName.java

package com.cheng470;

/**
 * <p>
 * Description:生成中文书籍章节
 * </p>
 *
 * @author XuJianCheng
 * @version 1.0
 * @since 2018/9/23
 */
public class GenChapterName {
    static String[] word = {"零", "一", "二", "三", "四", "五", "六", "七", "八", "九"};
    static String[] unit = {"", "十", "百", "千", "万", "十万", "百万"};
    static String pre = "第";
    static String suf = "章";

    public static void main(String[] args) {
        int num = 1234;
        for (int i = 1; i <= num; i++) {
            System.out.println(numToWord(i));
        }
    }

    private static String numToWord(int num) {
        String str = String.valueOf(num);
        StringBuilder result = new StringBuilder(pre);
        boolean flag = false; // 是否前面扫描到0
        for (int i = 0; i < str.length(); i++) {
            int n = str.charAt(i) - '0';
            if (n == 0) {
                flag = true;
                continue;
            }
            // 用十替换一十
            if (str.length() == 2 && i == 0 && n == 1) {
                result.append(unit[str.length() - i - 1]);
                continue;
            }
            if (flag) {
                result.append(word[0]);
                flag = false;
            }
            result.append(word[n]).append(unit[str.length() - i - 1]);
        }
        result.append(suf);
        return result.toString();
    }
}