Replacin characters in a string using hashtable

hello
i have hashtable on java with many keys and their values
i want to read a string and search in it if it contains one or more of the keys and replace them by their values
n.b. i tried to make replace of each key alone but i have many keys it will be very long
how can i make a replace method for all the keys togother
thank you

You can greatly simplify things if you can separate potential matched strings out of you source before looking them up, often in these cases the a regular expression pattern matcher will do nicely. For example if the source if divided into words and each entry in the map is a single word, or if there some kind of escape convention like ${keyword}.
If not, then much depends on the relative size of the map and the source string. For a small map it probably easiest just to search and replace in the whole string for each key in turn.
An approach that might work if the number of keys to be replaced is large is to read the source character by character and keep a list of keys that you might just have read the first n letters of.

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Removing Duplicate Characters in a String without using a Hashset

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I want to go from
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okay, here it is
1) use a loop, look through each character in the original string
2) look at the new string, if this character exist, don't add it, otherwise add it.
check out methods in java.lang.String

NEED HELP WITH WORD & CHAR COUNT USING HASHTABLE

I have to use a hashtable to be able to count all the words and characters (#'s, punctuations, etc) from a file
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Here's the code: public static void main (String [] args)
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      try{
      BufferedReader br = new BufferedReader(new FileReader(input));
      String s = br.readLine();
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this     1
this     1
program     1
this     1
program     1
hi     1
this     1
program     1
hi     1
java     1
this     1
program     1
hi     1
java     1
is     1
this     1
program     1
hi     1
java     1
is     1
my     1
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I have been able to get it to correctly count the
words in the file but none of the characters and it
also does not display the words alphabetically and
just displays it in an odd way
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How to search special characters in a string

Hi all,
I want to search special characters in all string columns and all rows in the table.
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HTH
Laurent Schneider
OCM DBA
SQL> select * from z;
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Mama?Mia
a b c
123
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S
Mama?Mia
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S
Mama?Mia

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Use the instring and right string functions then UpperCase

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Guys,
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One I'm using right now is:
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Nitin_tiwari wrote:
I have a string which has Chinese as well as Japanese characters, and I only want to remove only Chinese characters.
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Well, the problem here is that Strings don't have any information on the language. What you can get out of a String (provided you have the necessary data from the Unicode standard) is the script that is used.
A script can be used for multiple languages (for example English and German use mostly the same script, even if there are a few characters that are only used in German).
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Sample code to identify special characters in a string

Hi,
I need to identify special characters in a string.... could anybody send me some code please.......
Thanks,
Best regards,
Karen

data: str(100) type c.
data: str_n type string.
data: str_c type string.
data: len type i.
data: ofst type i.
str = '#ABCD%'.
len = strlen( str ).
do.
if ofst = len.
    exit.
endif.
if str+ofst(1) co sy-abcde.
    concatenate str_c str+ofst(1) into str_c.
else.
    concatenate str_n str+ofst(1) into str_n.
endif.
ofst = ofst + 1.
enddo.
write:/ str.
write:/ str_c.
write:/ 'spacial chracter',20 str_n.
Function module <b>SF_SPECIALCHAR_DELETE</b> <b>DX_SEARCH_STRING</b>
l_address1 = i_adrc-street.
CHECK NOT L_ADDRESS1 IS INITIAL.
len = STRLEN( l_address1 ).
do len times.
if not l_address1+l(1) ca
'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 '.
if i_adrc-street+l(1) CO sy-abcde.
elseif i_adrc-street+l(1) CO L_NUMCHAR.
exit.
endif.
l = l + 1.
enddo.
data : spchar(40) type c value '~!@#$$%^&()?...'etc.
data :gv_char .
data:inp(20) type c.
take the string length .
len = strlen (i/p).
do len times
MOVE FNAME+T(1) TO GV_CHAR.
IF gv_char CA spchar.
MOVE fnameT(1) TO inp2T(1).
ENDIF.
T = T + 1.
enddo.
REPORT ZEX4 .
PARAMETERS: fname LIKE rlgrap-filename .
DATA: len TYPE i,
T TYPE I VALUE 0,
inp(20) TYPE C,
inp1(20) type c,
inp2(20) type c,
inp3(20) type c.
DATA :gv_char.
data : spchar(20) type c value '#$%^&*()_+`~'.
START-OF-SELECTION.
CONDENSE fname.
len = strlen( fname ).
WRITE:/ len.
DO len TIMES.
MOVE FNAME+T(1) TO GV_CHAR.
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MOVE fnameT(1) TO inpT(1).
ENDIF.
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ENDDO.
CONDENSE INP.
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Rewards if useful..........
Minal

RegExp for excluding special characters in a string.

Hi All,
Im using Flex RegExpValidator. Can anyone suggest me the correct expression to validate this condition?....
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Thanks in advanced to all.
Munira

sorry but you are posting things back that do not make any sense
what do you mean with the below comment?
munira06 wrote:
Yes you are correct ,but I have tried this with single special character
say
Re: RegExp for excluding special characters in a string.
here is a sample app taken from the live docs
using ^[a-zA-Z0-9 \-_]*$ as the regex accepts all characters from a-z, A-Z, 0-9 - [space] and_
run the example tell me what regex you are using and what test strings fail when they should pass or pass when they should fail
<?xml version="1.0" encoding="utf-8"?>

<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/mx">
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        <![CDATA[
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            import mx.validators.*;
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                flags="g" expression="{regex.text}"
                valid="handleResult(event)"
                invalid="handleResult(event)"
                trigger="{myButton}"
                triggerEvent="click"/>
    </fx:Declarations>
    <s:Panel title="RegExpValidator Example"
            width="75%" height="75%"
            horizontalCenter="0" verticalCenter="0">
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            <s:Label width="100%" text="1. Enter text to search. By default, enter a string containing the letters ABC in sequence followed by any digit."/>
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            <s:Label width="100%" text="4. The results show the index in the text where the matching pattern begins, and the matching pattern. "/>
            <mx:Form>
                <mx:FormItem label="Enter text:">
                    <s:TextInput id="regex_text" text="xxxxABC4xxx" width="100%"/>
                </mx:FormItem>
                <mx:FormItem label="Enter regular expression:">
                    <s:TextInput id="regex" text="ABC\d" width="100%"/>
                </mx:FormItem>
                <mx:FormItem label="Results:">
                    <s:TextInput id="reResults" width="100%"/>
                </mx:FormItem>
                <mx:FormItem >
                    <s:Button id="myButton" label="Validate"/>
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</s:Application>

Is there a list of Unicode characters that can be used in Acrobat bookmarks?

I can add Greek characters to Acrobat bookmarks using hexadecimal strings. For example, to print a lower case gamma symbol I use <FEFF03B3>. FEFF is the required Unicode flag and 03B3 is the Unicode code for gamma. This works fine. However, there are no Unicode entries for greek characters in the PDF 32000-1:2008 PDF Specification manual. Table D.2 - PDFDocEncoding Character Set on page 656 lists Unicode characters and these also work when added to bookmarks but no Greek codes are in this table. Since I can sucessfully use Greek Unicode characters in the range of 0x0391 - 0x03CE and these characters are not listed in the PDF manual I am assuming there are additional Unicode character that will work in bookmarks. Therefore, I am looking for a complete list of Unicode characters that can be used in Acrobat's bookmarks. Does such a list exist?

Thank you for the response.
I'm sorry to hear there is no list available. I'm building the Acrobat bookmarks automatically. The input data contains entity codings (for example, a lower case Greek gamma is coded as γ) and I was hoping to be able to just pass these through with an automatic conversion to a hexadecimal string (for example <FEFF03B3>). If I had a list of valid Unicode characters, that will display in an Acrobat bookmark, I could validate each entity before the conversion and catch the ones that won't display correctly. I know these types of characters are out there because I have already come across them. For example, a superscript 5 (0x2075) displays fine in MSWord but shows as a white box in a bookmark. Now I'll need to proof the output PDFs and look for white boxes in the bookmarks so that I can build my list of unicode characters that do not work in Acrobat bookmarks.
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Unable to read more than 255 characters in a string data type.

Hello,
I am using Crystal Reports version 11.5.8.826 to generate reports from databases such as MS-Excel & BaaN.
In Excel, there are records which carry string lengths of more than 255 characters. All though the fields are getting displayed in the report, the data being displayed gets truncated once it reaches a length of 255 characters.
Kindly provide me with a solution this problem.
Regards

Hello Manish,
I know that older versions of Crystal (Crystal 10 and older ) had a limitation of only 256 Characters for a string value. You should be able to use this code to get what you need.
We were successfully able to print out the Declaration of Independence through a Crystal report using something very similiar to this.
u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2013
Shared StringVar Array strings;
Shared NumberVar arrayMax := 1;
Shared NumberVar maxLength := 250;
Shared BooleanVar firstTime := true;
Redim strings[arrayMax];
strings[1] := u201Cu201D;
u2018done!u2019
u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2013
Here is my main loop that I used in the group header:
u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2013
WhilePrintingRecords;
Shared StringVar Array strings;
Shared NumberVar arrayMax;
Shared NumberVar maxLength;
Shared BooleanVar firstTime;
Local StringVar enteredString;
Local NumberVar lenStr;
Local NumberVar lenArr;
Local NumberVar lenLeft;
enteredString := [Field Name];
enteredString := IIF(firstTime,enteredString, u201C, u201D & enteredString);
firstTime := false;
lenStr := Length(enteredString);
lenArr := Length(strings[arrayMax]);
lenLeft := maxLength u2013 lenArr;
if (lenLeft >= lenStr) then
strings[arrayMax] := strings[arrayMax] & enteredString;
u201D
else
strings[arrayMax] := strings[arrayMax] & left(enteredString, lenLeft);
arrayMax := arrayMax + 1;
redim preserve strings[arrayMax];
strings[arrayMax] := u201Cu201D;
strings[arrayMax] := strings[arrayMax] & right(enteredString, lenStr u2013 lenLeft);
u201D
u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2013
and then to display the different sets in the text area. I would have one of these for every element I need displayed and change the display number variable.
u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2013
Shared StringVar Array strings;
Shared NumberVar arrayMax;
Local NumberVar displayNumber := [element in array];
if(arrayMax >= displayNumber) then
strings[displayNumber];
else
u201D;
u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2014u2013
I like this version better because the array is completely dynamic. It can be as big or as small as it needs to be. There is always room for optimizations. But hopefully this will get you started on the right path.
Jenny

Removing non-alpha-numeric characters from a string

How can I remove all non-alpha-numeric characters from a string? (i.e. only alpha-numerics should remain in the string).

Or even without a loop ?
Extract from the help for the Search and Replace String function :
Right-click the Search and Replace String function and select Regular Expression from the shortcut menu to configure the function for advanced regular expression searches and partial match substitution in the replacement string.
Extract from the for the advanced search options :
[a-zA-Z0-9] matches any lowercase or uppercase letter or any digit. You also can use a character class to match any character not in a given set by adding a caret (^) to the beginning of the class. For example [^a-zA-Z0-9] matches any character that is not a lowercase or uppercase letter and also not a digit.
Message Edité par JB le 05-06-2008 01:49 PM
Attachments:
Example_VI_BD4.png ‏2 KB

Find and print illegal character in a string using regexp

I have the following simple regexp that checks for illegal characters in a string:
String regexp = ".*([\\[\\];]+|@).*"; // illegal: [ ] ; @
String input = "Testing [ 123";
System.out.println(Pattern.matches(regexp, input));How can I find and print the character that is invalid??
I've tried using the Matcher class togheter with Pattern but cant get it to work. :(
Like this:
Pattern pattern = Pattern.compile(regexp);
Matcher matcher = pattern.matcher(input);
matcher.lookingAt();
int matchedChar = matcher.end();
if (matchedChar < input.length()) {
String illegalCharFound = String.valueOf(input.charAt(matcher.end()));
System.out.println(illegalCharFound);
}What am I doing wrong?

1. You call lookingAt(), but you don't check its return value, so you don't know if the regex actually matched.
2. matcher.end() returns the index of the character following whatever was matched, assuming there was a match (if there wasn't, it will throw an exception). So either it will point to a legal character, or you'll get a StringIndexOutOfBoundsException because an illegal character was found at the end of the input. The start() method would be a better choice, but...
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Is there a limitation of characters in a String variable in 8.0.2?

Is there a limitation of characters in a String variable?
I'm trying to create an email within my script and when I paste my text into my parameter, which is a String variable, it will only paste up to 80 characters (including spaces).
In 7.0 I was able to paste my paragraphs and the larges paragraph had 346 characters (including spaces).
Thanks,
Debbie

Greg,
Ah.... that's it.
I modified the value of the parameter within the script and added the text that I needed. I added the following:
"To transfer the file over to the router's flash you will need an TFTP or FTP program. Start your application and make sure that the default directory is pointed to the directory where you copied the greeting. Now log into the router that needs to be updated. Once you are in the router issue one of these commands:"
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Do I need to get this submitted as a bug?
Thank you,
Debbie

Scanning values of characters in a string

Hey guys,
I'm trying to figure out a way I can scan the individual characters of a string to find their value [unicode value, if it's a number, punctuation etc] and I'm a bit stumped. I know I'll have to be using the chatAt method, but I can't think of how I could implement this to continuiously scan through a string.
If someone could help point me in the right direction it would be great.
Thanks in advance.

Do you know what a loop is?
http://java.sun.com/docs/books/tutorial/java/nutsandbolts/index.html
Do you know how to find out about methods of the String class such as toCharArray?
http://java.sun.com/javase/6/docs/api/java/lang/String.html

Replacin characters in a string using hashtable

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