Got a version of Excel that uses the ribbon interface (Excel 2007 or later)? This site is for you! If you use an earlier version of Excel, visit our ExcelTips site focusing on the menu interface.
With more than 50 non-fiction books and numerous magazine articles to his credit, Allen Wyatt is an internationally recognized author. He is president of Sharon Parq Associates, a computer and publishing services company.
Learn more about Allen...
Please Note: This article is written for users of the following Microsoft Excel versions: 2007 and 2010. If you are using an earlier version (Excel 2003 or earlier), this tip may not work for you. For a version of this tip written specifically for earlier versions of Excel, click here: Finding the Nth Occurrence of a Character.
Barry often finds himself wanting to identify the Nth occurrence of a character within a text string. He knows he can use the SEARCH and FIND worksheet functions for finding an initial occurrence, but is unsure how to find, say, the 3rd occurrence of the letter "B" within a text string.
Actually, the SEARCH function could be used to find the desired occurrence, in the following manner:
Notice how the SEARCHB function is used in a nested manner. The formula specifies what is being searched for (the letter "b") and the number of nesting levels indicates which occurrence within the cell you want to find. The formula returns the position of the desired character within the cell.
The problem with such a formula, of course, is that it is difficult to maintain and can quickly get unusable if you want to find, say, the seventh occurrence.
A more flexible formula would be the following:
This formula examines the value in A1. It substitutes the CHAR(1) code for the third occurrence of "B" within the cell. The FIND function then looks within the resulting string for the position where CHAR(1) occurs. If the desired occurrence does not exist, then the formula returns a #VALUE error.
If you prefer, you could create a user-defined function that will look for the Nth position of a character. The following is a very simple macro that takes three arguments: the string to be searched, the text to match, and the position desired.
Function FindN(sFindWhat As String, _ sInputString As String, N As Integer) As Integer Dim J As Integer Application.Volatile FindN = 0 For J = 1 To N FindN = InStr(FindN + 1, sInputString, sFindWhat) If FindN = 0 Then Exit For Next End Function
The function is case sensitive in what it searches for, and it returns the position within the specified string at which the sFindWhat value occurs. If there is no occurrence at the specified instance, then the function returns a 0. The following shows how the function can be used in a worksheet:
ExcelTips is your source for cost-effective Microsoft Excel training. This tip (10567) applies to Microsoft Excel 2007 and 2010. You can find a version of this tip for the older menu interface of Excel here: Finding the Nth Occurrence of a Character.
More Power! For some people, the prospect of creating macros can be scary. Those who conquer their fears, however, find they become much more confident and productive once they learn how to make Excel do exactly what they want. ExcelTips: The Macros is an invaluable source for learning Excel macros. You are introduced to the topic in bite-sized chunks, pulled from past issues of ExcelTips. Learn at your own pace, exactly the way you want. Check out ExcelTips: The Macros today!