what is the simple way to reverse the words in string in java?

Question

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Reverse a given sentence in java

what is the simple way to reverse the words in string in java? Example: "Hello Stack over flow" will turn to: "flow over Stack Hello"

Thank you,

There are several solutions in [this question](http://stackoverflow.com/questions/2713655/reverse-a-given-sentence-in-java). — Blastfurnace, Feb 26 '12 at 23:42
[Reverse string java](http://chinmaylokesh.wordpress.com/2011/01/19/program-to-reverse-words-in-a-sentence-c-and-java/). — RanRag, Feb 26 '12 at 23:48

score 1 · Accepted Answer · answered Feb 26 '12 at 23:48

Here is a simple solution:

    String s = "Hello stack over flow";
    List< String > words = Arrays.asList( s.split( " " ) );
    Collections.reverse( words );
    String reversed = words.get( 0 );
    for ( int i = 1; i < words.size(); ++i ) {
        reversed += " " + words.get( i );
    }

I assume that all characters except spaces are considered as part of words. You may need to provide more details if you need something else.

score 1 · Answer 2 · answered Feb 27 '12 at 00:09

1

String s="abcd";

StringBuffer sb=new StringBuffer(s);

sb=sb.reverse();

System.out.println(sb.toString());

Hope can help you.

answered Feb 27 '12 at 00:09

Tube

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Really, try your method with `String s = "Hello stack overflow users"`. – RanRag Feb 27 '12 at 00:14

xea · Answer 3 · 2012-02-26T23:44:28.487

0

A straightforward solution would be splitting the input string at the whitespaces, then reversing the result array with eg. Collections.reverse() or Commons ArrayUtils.reverse(), then joining them back together.

edited Feb 26 '12 at 23:44

answered Feb 26 '12 at 23:39

xea

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what is the simple way to reverse the words in string in java?

3 Answers3