In Java, the tokens are sorted by pinyin.

Recently, traditional Chinese characters need to be sorted by pinyin.

 
Public static void main (string [] ARGs) {comparator CMP = collator. getinstance (Java. util. locale. china); string [] arr = {"Zhang San", "Li Si", "Wang Wu", "Liu", "Zhou JIU", "Dai Yun ", "Dai a"}; string [] arr1 = {"life", "Culture and Education", "Politics", "nature", "Religion", "economy ", "anecdote", "Economy and Trade"}; // valid for traditional Chinese characters. Dai A and Dai Yi use the same Chinese character as the first character and use the same Chinese alphabet as the second character, very intelligent. sort (ARR, CMP); For (INT I = 0; I <arr. length; I ++) // output: Dai A, Dai Yi, Li Si, Liu, Wang Wu, Zhang San, Zhou weisystem. out. println (ARR [I]); // It is ineffective for traditional Chinese characters, and the traditional "anecdote" is shot at the final arrays. sort (arr1, CMP); For (INT I = 0; I <arr1.length; I ++) // outputs: economy and Trade, life, culture and education, politics, nature, religion, economy, and Administrative Affairs system. out. println (arr1 [I]);}
 

You can use the comparator interface in the util package to implement the compare method based on custom rules. The following is an example:

 package zhouyrt; import Java. util. arraylist; import Java. util. arrays; import Java. util. comparator; import Java. util. list; public class pinyinpaixu {static class person {private string name; private integer salary; // salary private integer age; // annual salary person (string N, integer S, integer) {This. name = N; this. salary = s; this. age = A;} Public String getname () {return name;} public void setname (string name) {This. name = Name;} public integer getsalary () {return salary;} public void setsalary (integer salary) {This. salary = salary;} public integer getage () {return age;} public void setage (integer age) {This. age = age;} Public String tostring () {return "name:" + this. name + "\ t salary:" + this. salary + "\ t year:" + this. age ;}}

/** Sort by salary, from low to high */static class salarycomparator implements comparator {public int compare (Object O1, object O2) {INTEGER salary1 = (person) O1 ). salary; integer salary2 = (person) O2 ). salary; If (salary1-salary2> 0) return 1; if (salary1-salary2 <0) Return-1; else return 0 ;}}
 

 
/** Sort by year, from low to high */static class agecomparator implements comparator {public int compare (Object O1, object O2) {INTEGER age1 = (person) O1 ). age; integer age2 = (person) O2 ). age; If (age1-age2> 0) return 1; if (age1-age2 <0) Return-1; else return 0 ;}}
 

Main method:

Public static void main (string [] ARGs) {list <person> List = new arraylist <person> (); list. add (new person ("", 3400,25); list. add (new person ("", comment, 27); list. add (new person ("Li an",); list. add (new person ("tiger",); list. add (new person ("Andre", 3500,21); person [] personary = new person [list. size ()]; personary = List. toarray (new person [list. size ()]); system. out. println ("--- Before sorting ------------------------------------"); For (person P: personary) {system. out. println (p);} arrays. sort (personary, new salarycomparator (); system. out. println ("--- sort by salary --------------------------------------"); For (person P: personary) {system. out. println (p);} arrays. sort (personary, new agecomparator (); system. out. println ("--- sort by year and then ------------------------------------"); For (person P: personary) {system. out. println (p );}}}

The following are the results of outputs:

--- Before sorting ------------------------------------
Name: min Yang salary: 3400 min: 25
Name: Wang Yuan salary: 10000 years salary: 27
Name: Li an salary: 9000 salary: 30
Name: Xiaohu salary: 2500 salary: 22
Name: Andrew's salary: 3500 salary: 21

--- Sort by salary ------------------------------------
Name: Xiaohu salary: 2500 salary: 22
Name: min Yang salary: 3400 min: 25
Name: Andrew's salary: 3500 salary: 21
Name: Li an salary: 9000 salary: 30
Name: Wang Yuan salary: 10000 years salary: 27

--- ---------------------------------------------- After sorting by year ------------------------------------
Name: Andrew's salary: 3500 salary: 21
Name: Xiaohu salary: 2500 salary: 22
Name: min Yang salary: 3400 min: 25
Name: Wang Yuan salary: 10000 years salary: 27
Name: Li an salary: 9000 salary: 30