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#1
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Find missing numbers
How do I find missing numbers?
I have numbers from 1 to 500 in columns D1 to D2000 (some numbers may appear in several cells). However, some numbers don't appear at all. How do I find missing numbers? Thnak you. |
#2
Posted to microsoft.public.excel.misc
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Find missing numbers
One play ..
In E1: =IF(ISNUMBER(MATCH(ROWS($1:1),D:D,0)),"",ROWS($1:1 )) In F1: =IF(ROWS($1:1)COUNT(E:E),"",SMALL(E:E,ROWS($1:1)) ) Copy E1:F1 down to F2000 (the last row). The missing numbers will appear in col F, neatly bunched at the top. Success? hit the YES below. -- Max Singapore http://savefile.com/projects/236895 Downloads:27,000 Files:200 Subscribers:70 xdemechanik --- "Vic" wrote: How do I find missing numbers? I have numbers from 1 to 500 in columns D1 to D2000 (some numbers may appear in several cells). However, some numbers don't appear at all. How do I find missing numbers? Thnak you. |
#3
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Find missing numbers
In E1 paste this formula
=IF(ROW(D1)(MAX(D:D)-MIN(D:D)),"Enough",IF(ISERROR(MATCH(MIN(D:D)+ROW(D 1),D:D,FALSE)),MIN(D:D)+ROW(D1),"")) This is an array formula. Enter with CTRL + SHIFT + Enter. Double-click to copy down as far as you have data in column D Or drag/copy down until "Enough" shows up. Gord Dibben MS Excel MVP On Mon, 2 Nov 2009 13:35:01 -0800, Vic wrote: How do I find missing numbers? I have numbers from 1 to 500 in columns D1 to D2000 (some numbers may appear in several cells). However, some numbers don't appear at all. How do I find missing numbers? Thnak you. |
#4
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Find missing numbers
Here's another one...
Array entered** in F1: =SMALL(IF(ISNA(MATCH(ROW(A$1:A$500),D$1:D$2000,0)) ,ROW(A$1:A$500)),ROWS(F$1:F1)) ** array formulas need to be entered using the key combination of CTRL,SHIFT,ENTER (not just ENTER). Hold down both the CTRL key and the SHIFT key then hit ENTER. Copy down until you get #NUM! errors meaning all missing numbers have been returned. This is kind of slow to calculate. Here's a macro from JMB that will do this. Place the code in a general module. Sub FindMissing() Dim lngUpper As Long Dim lngLower As Long Dim i As Long Dim rngData As Range Dim lngcount As Long Set rngData = Range("D1:D2000") 'change as needed lngLower = 1 'start of sequence lngUpper = 500 'end of sequence lngcount = 1 For i = lngLower To lngUpper If Not IsNumeric(Application.Match(i, _ rngData, 0)) Then Range("F" & lngcount).Value = i 'sets output to column F lngcount = lngcount + 1 End If Next i End Sub -- Biff Microsoft Excel MVP "Vic" wrote in message ... How do I find missing numbers? I have numbers from 1 to 500 in columns D1 to D2000 (some numbers may appear in several cells). However, some numbers don't appear at all. How do I find missing numbers? Thnak you. |
#5
Posted to microsoft.public.excel.misc
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Find missing numbers
Clarification:
Copy E1:F1 down to F2000 (the last row) should have read as: Copy E1:F1 down to F500 (copy down by 500 rows) since you are checking for numbers: 1 - 500 within the source data The extent of your source data is immaterial The "copy down by x rows" step is where x = the range of numbers checked -- Max Singapore http://savefile.com/projects/236895 Downloads:27,000 Files:200 Subscribers:70 xdemechanik --- |
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