hello everyone

i want to ask a question tried to slove them but as i m
novice so havnt solved so far

i have data in column1 to n the data in each is of different length/
diff number of rows
are present

i want to make all coulumns are of same size

say if 1 column has data in 15 rows n
another column2 hav data in 6
rows
[so i want to copy data of 6 row in all the rows upto 15] and
some other column hav data in 10 rows ..[so i want to copy data of 6
row in all the coumns upto 15] so want them to make equal length