Change column in array

Arr= [ 5 5 5 5 ; 5 5 5 5; 5 5 5 5 ; 5 5 5 5; 5 5 5 5]

how to change all elements in a column to a diffrent number?

Answer 1

[KALYAN ACHARJYA]

Arr=[5 5 5 5 ; 5 5 5 5; 5 5 5 5 ; 5 5 5 5; 5 5 5 5];
% First column number change the 10
Arr(:,1)=10
%Do the same for others

Result:

Arr =
    10     5     5     5
    10     5     5     5
    10     5     5     5
    10     5     5     5
    10     5     5     5

You can do multiple column elements change with single assignments also