Im not any good at building regular expression so i need a litle help with this simple function.

All i want to do is search for a character in a string and move it to the end of the string.

Example:

function moveToEnd(string, search) ->
moveToEnd(AABBCCDDEE, A)

returns

BBCCDDEEAA (moves all the A's to the end)

If they are all grouped together:

code:

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StringObj.replace(/(.*)(A*)(.*)/i,"$1$3$2);

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code:

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var StringObj;
while(RegExp(".*A+[^A]+A*$","gi").exec(StringObj)){
    StringObj.replace(/(.*?)(A*)(.*)/i,"$1$3$2);
}

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Try this. Non regexp method though.
1) Take string (AABBCCDDEE) and char to replace (A)
2) Count instances of char to replace (A)
3) Create target string all chars not char to replace in string ie target string = "BBCCDDEE"
4) Append 'count' number of char to replace (ie As) at the end


Should be simple enough

quote:

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Originally posted by John Anderton
2) Count instances of char to replace

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Looks like some very untested code, yes. I can't seem to get it working whatsoever, it's crashing my Messenger every time I try to run this (infinite loop?):

code:

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var StringObj = "Some shit with A's.";
while(RegExp(".*A+[^A]+A*$","gi").exec(StringObj)){
    StringObj = StringObj.replace(/(.*?)(A*)(.*)/i,"$1$3$2");
}

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I made a simple function for now (before your post John Anderton )

code:

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// Move substring to end of string
function moveToEnd(string, substring) {
    var moveToEndI = 0;
    while(string.indexOf(substring) > -1) {
        string = string.replace(substring, "");
        moveToEndI++;
    }
   
    for (;moveToEndI > 0; moveToEndI--)
        string = string + "" + substring;
    return string;
}

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quote:

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Originally posted by Mattike
Could you try to find some time to get it working in some way?

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code:

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function moveToEnd(oString,sub){
    var re = RegExp(".*?"+sub+"+(?!$)","gim");
    eString = oString;
    while(re.exec(oString) != null){
        eString = eString.replace(RegExp("(.*?)("+sub+"+)(.*)","gi"),"$1$3$2");
    }
    return eString;
}

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