[julia-users] lower triangular matrix in julia

[Ahmed Mazari]

Hello,

l have the number of columns equals the number of rows . and the the 
diagonal is esqual to zero .  How can l build this matrix  ?
#mat
#     [,1] [,2] [,3] [,4]
#[1,]   0   NA   NA   NA
#[2,]    1   0   NA   NA
#[3,]    2    4   0   NA
#[4,]    3    5    6   0


thank you