Need help😥😥- find the maximum column indices and store it in another array

Guys, (use of max and which.max())
This only gives me the maximum value location in the whole matrix, but my intention is to run this for every column

i=1:4964
{which(M[,i]==max(M[,i]),arr.ind=TRUE)
}
;:output
row col
[1,] 266 3606

Is this what you are looking for?

set.seed(1)
MAT <- matrix(sample(1:16), nrow = 4)
MAT
#>      [,1] [,2] [,3] [,4]
#> [1,]    9    2   13    6
#> [2,]    4   14    5   15
#> [3,]    7   12   11   16
#> [4,]    1    3   10    8
apply(X = MAT, MARGIN = 2, FUN = which.max)
#> [1] 1 2 1 3

Created on 2020-11-13 by the reprex package (v0.3.0)

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OMG thanks it works
mate, I am new in r and not that good in programming,
and I can't believe someone replied to my query......Thanks a lot, this made my day, gives me the feeling I am not alone in this world😍