find substrings inside string

Question

How can i find substrings inside string and then remember and delete it when i found it.

EXAMPLE:

select * from (select a.iid_organizacijske_enote, 
       a.sifra_organizacijske_enote "Sifra OE", 
       a.naziv_organizacijske_enote "Naziv OE", 
       a.tip_organizacijske_enote "Tip OE"

I would like to get all word inside " ", so

Sifra OE
Naziv OE
TIP OE

and return

select * from (select a.iid_organizacijske_enote, 
       a.sifra_organizacijske_enote,
       a.naziv_organizacijske_enote, 
       a.tip_organizacijske_enote

i try with regex, indexOf() but no one works ok

Note that just saying something doesn't work usually doesn't help very much ... blogs.msdn.com/oldnewthing/archive/2010/04/21/9999675.aspx — Joey
– Joey, Commented Apr 22, 2010 at 9:41

Bozho · Accepted Answer · 2010-04-22 09:47:36Z

3

String.replace(..):

Replaces each substring of this string that matches the literal target sequence with the specified literal replacement sequence. The replacement proceeds from the beginning of the string to the end, for example, replacing "aa" with "b" in the string "aaa" will result in "ba" rather than "ab".

str = str.replace(wordToRemove, "");

If you don't know the words in advance, you can use the regex version:

str = str.replaceAll("\"[^\"]+\"", "");

This means, that all strings starting and ending with quotes, with any character except quotes between them, will be replaced with empty string.

edited Apr 22, 2010 at 9:47

answered Apr 22, 2010 at 9:40

Bozho

599k147 gold badges1.1k silver badges1.2k bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Eyal Schneider · Accepted Answer · 2010-04-22 09:52:34Z

1

Consider using regex with capturing groups. With Java's Matcher class, you can find the first match, and then use replaceFirst(String).

--EDIT--

example (not efficient for long inputs):

String in = "hello \"there\", \"friend!\"";
Pattern p = Pattern.compile("\\\"([^\"]*)\\\"");
Matcher m = p.matcher(in);
while(m.find()){
    System.out.println(m.group(1));
    in = m.replaceFirst("");
    m = p.matcher(in);
}
System.out.println(in);

edited Apr 22, 2010 at 9:52

answered Apr 22, 2010 at 9:43

Eyal Schneider

22.5k5 gold badges51 silver badges79 bronze badges

1 Comment

senzacionale Over a year ago

do you have any example maybe?

Pranay Rana · Accepted Answer · 2010-04-22 10:18:31Z

1

i tried and created function as below -- its working fine and returning output you want

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Program p = new Program();
            string s =  p.mystring("select * from (select a.iid_organizacijske_enote, a.sifra_organizacijske_enote 'Sifra OE', "
        +"a.naziv_organizacijske_enote 'Naziv OE', "+
       "a.tip_organizacijske_enote 'Tip OE'");
        }


        public string mystring(string s)
        {
            if (s.IndexOf("'") > 0)
            {
                string test = s.Substring(0, s.IndexOf("'"));
                s = s.Replace(test+"'", "");

                s = s.Remove(0, s.IndexOf("'") + 1);
                test = test.Replace("'", "");
                test = test + s;
                return mystring(test);
            }
            else
            {
                return s;
            }
        }
    }
}

answered Apr 22, 2010 at 10:18

Pranay Rana

177k37 gold badges244 silver badges267 bronze badges

1 Comment

Srinivas Reddy Thatiparthy Over a year ago

Boss!! he tagged this question as java,why answer in c#.Remove before you get downvotes..

user2862544 · Accepted Answer · 2016-10-18 20:16:39Z

0

best & optimized code is here:

    public static void main(String[] args){
    int j =0;
    boolean substr = true;
    String mainStr = "abcdefgh";
    String ipStr = "efg";
    for(int i=0 ; i < mainStr.length();i++){
        if(j<ipStr.length() && mainStr.charAt(i)==ipStr.charAt(j)){
            j++;
        }               
    }
    if(j>=0 && j !=ipStr.length()){
        substr = false;
    }
    System.out.println("its a substring:"+substr);
}

answered Oct 18, 2016 at 20:16

user2862544

4253 silver badges13 bronze badges

Collectives™ on Stack Overflow

find substrings inside string

4 Answers 4

Comments

1 Comment

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

Comments

1 Comment

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related