package com.ynxbd.common.helper.common;

import org.apache.commons.codec.digest.DigestUtils;
import org.apache.commons.lang3.ObjectUtils;

import java.util.Arrays;
import java.util.Collections;

/**
 * @Author wsq
 * @Date 2021/5/31 11:30
 * @Copyright @ 2020 云南新八达科技有限公司 All rights reserved.
 */
public class NumHelper {

    /**
     * 数字排序算法
     *
     * @param num    被排序数字
     * @param isDesc 是否倒序
     */
    public static String numOrder(Integer num, boolean isDesc) {
        String str;
        try {
            str = String.valueOf(num);
        } catch (Exception e) {
            ErrorHelper.println(e);
            return null;
        }
        Integer[] arrays = new Integer[str.length()];
        for (int i = 0; i < str.length(); i++) {
            arrays[i] = Integer.parseInt(str.charAt(i) + "");
        }
        Arrays.sort(arrays, isDesc ? Collections.reverseOrder() : null);
        StringBuilder sb = new StringBuilder();
        for (Integer array : arrays) {
            sb.append(array);
        }
        return sb.toString();
    }

    /**
     * 数字倒序排列
     *
     * @param num 被排序数字
     */
    public static String numDesc(String num) {
        StringBuilder sb = new StringBuilder();
        if (ObjectUtils.isEmpty(num)) {
            return null;
        }
        for (int i = num.length() - 1; i >= 0; i--) {
            sb.append(num.charAt(i));
        }
        return sb.toString();
    }


    public static void main(String[] args) {
        String reportId;
        reportId = NumHelper.numDesc("527109");
        System.out.println(reportId);
        reportId = Base64Helper.encode(reportId);
        System.out.println(reportId);
        reportId = DigestUtils.md5Hex(reportId);
        System.out.println(reportId);
    }
}