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68 lines
1.9 KiB
68 lines
1.9 KiB
package com.ynxbd.common.helper.common;
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import org.apache.commons.codec.digest.DigestUtils;
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import org.apache.commons.lang3.ObjectUtils;
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import java.util.Arrays;
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import java.util.Collections;
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/**
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* @Author wsq
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* @Date 2021/5/31 11:30
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* @Copyright @ 2020 云南新八达科技有限公司 All rights reserved.
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*/
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public class NumHelper {
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/**
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* 数字排序算法
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*
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* @param num 被排序数字
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* @param isDesc 是否倒序
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*/
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public static String numOrder(Integer num, boolean isDesc) {
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String str;
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try {
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str = String.valueOf(num);
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} catch (Exception e) {
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ErrorHelper.println(e);
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return null;
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}
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Integer[] arrays = new Integer[str.length()];
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for (int i = 0; i < str.length(); i++) {
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arrays[i] = Integer.parseInt(str.charAt(i) + "");
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}
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Arrays.sort(arrays, isDesc ? Collections.reverseOrder() : null);
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StringBuilder sb = new StringBuilder();
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for (Integer array : arrays) {
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sb.append(array);
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}
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return sb.toString();
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}
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/**
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* 数字倒序排列
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*
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* @param num 被排序数字
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*/
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public static String numDesc(String num) {
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StringBuilder sb = new StringBuilder();
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if (ObjectUtils.isEmpty(num)) {
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return null;
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}
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for (int i = num.length() - 1; i >= 0; i--) {
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sb.append(num.charAt(i));
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}
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return sb.toString();
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}
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public static void main(String[] args) {
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String reportId;
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reportId = NumHelper.numDesc("527109");
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System.out.println(reportId);
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reportId = Base64Helper.encode(reportId);
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System.out.println(reportId);
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reportId = DigestUtils.md5Hex(reportId);
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System.out.println(reportId);
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}
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}
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