Sort a single String in Java

Question

Is there a native way to sort a String by its contents in java  E g    String s    edcba   - gt    abcde

User · Answer

Without using Collections in Java  import java util Scanner   public class SortingaString       public static String Sort String s1                char ch   s1 toCharArray                     String res  quot   quot                    for int i 0  i lt ch length   i                          for int j i 1 j lt ch length  j                                  if ch i  gt  ch j                                         char m ch i                       ch i  ch j                       ch j  m                                                           res res ch i                                   return res             public static void main String   args            Scanner sc new Scanner System in           System out println  quot enter the string quot                     String s1 sc next            String ans Sort  s1                    System out println  quot after sorting   quot  ans            Output   enter the string   sorting after sorting   ginorst

User · Answer

In Java 8 it can be done with   String s    edcba  chars        sorted        collect StringBuilder  new  StringBuilder  appendCodePoint  StringBuilder  append       toString      A slightly shorter alternative that works with a Stream of Strings of length one  each character in the unsorted String is converted into a String in the Stream  is   String sorted       Stream of  edcba  split               sorted            collect Collectors joining

User · Answer

Procedure     At first convert the string to char array Then sort the array of character Convert the character array to string  Print the string    Code snippet       String input    world       char   arr   input toCharArray        Arrays sort arr       String sorted   new String arr       System out println sorted

User · Answer

str chars   boxed   map Character  toString  sorted   collect Collectors joining     or s chars   mapToObj Character  toString  sorted   collect Collectors joining     or Arrays stream str split  quot  quot    sorted   collect Collectors joining

User · Answer

toCharArray followed by Arrays sort followed by a String constructor call   import java util Arrays   public class Test       public static void main String   args                String original    edcba           char   chars   original toCharArray            Arrays sort chars           String sorted   new String chars           System out println sorted             EDIT  As tackline points out  this will fail if the string contains surrogate pairs or indeed composite characters  accent   e as separate chars  etc  At that point it gets a lot harder    hopefully you don t need this    In addition  this is just ordering by ordinal  without taking capitalisation  accents or anything else into account

User · Answer

Question  sort a string in java  public class SortAStringInJava       public static void main String   args             String str    Protijayi      Method 1         str   str chars      IntStream                  sorted   collect StringBuilder  new  StringBuilder  appendCodePoint  StringBuilder  append  toString             System out println str              Method 2         str   Stream of str split       sorted   collect Collectors joining             System out println str

User · Answer

public static void main String   args        String str    helloword          char   arr      List lt Character gt  l   new ArrayList lt Character gt         for  int i   0  i  lt  str length    i              arr   str toCharArray            l add arr i               Collections sort l       str   l toString        System out println str       str   str replaceAll            replaceAll                         replaceAll                 System out println str

User · Answer

String a   dgfa       char    c   a toCharArray        Arrays sort c       return new String c     Note that this will not work as expected if it is a mixed case String  It ll put uppercase before lowercase   You can pass a comparator to the Sort method to change that

User · Answer

A more raw approach without using sort Arrays sort method  This is using insertion sort   public static void main String   args       String wordSt  watch       char   word wordSt toCharArray         for int i 0 i lt  word length-1  i             for int j i 1 j gt 0 j--               if word j  lt word j-1                    char temp word j-1                   word j-1  word j                   word j  temp                                    wordSt String valueOf word       System out println wordSt

User · Answer

Convert to array of chars   Sort   Convert back to String   String s    edcba   char   c   s toCharArray              convert to array of chars  java util Arrays sort c               sort String newString   new String c       convert back to String System out println newString           abcde

User · Answer

No there is no built-in String method  You can convert it to a char array  sort it using Arrays sort and convert that back into a String   String test   edcba   char   ar   test toCharArray    Arrays sort ar   String sorted   String valueOf ar     Or  when you want to deal correctly with locale-specific stuff like uppercase and accented characters   import java text Collator  import java util Arrays  import java util Comparator  import java util Locale   public class Test     public static void main String   args          Collator collator   Collator getInstance new Locale  fr    FR         String original      DedCBcbA  a       String   split   original split          Arrays sort split  collator       String sorted           for  int i   0  i  lt  split length  i                sorted    split i             System out println sorted       aA  bBcCdDe

[java] Sort a single String in Java

Examples related to java

Examples related to string

Examples related to sorting