Excel formula to count a number in first column and output in corresponding column in same row?

Question

Hello guys I was trying to achieve the following in Excel

A   B   C   D   E
1   1   0   0   0
0   0   0   0   0
2   0   1   0   0
1   2   0   0   0
2   0   2   0   0

So if I enter a number in A column the corresponding column to that number counts how many times the number occurred in A and outputs the same in the same row at the corresponding column. I ve tried B = COUNTIF(A1:A1000, 1) but this is useless if you know what I mean. Any ideas on how to achieve the result?

Answer 1

Try this formula in B1 copied down and across

=IF($A1=COLUMNS($B1:B1),COUNTIF($A$1:$A1,COLUMNS($B1:B1)),0)

That will give the results you showed