print 2d array using nested foor

Hello, I want to print an array as follows

9 9 9 9 9 9 9 9 9 9

8 8 8 8 8 8 8 8 8 8

7 7 7 7 7 7 7 7 7 7

6 6 6 6 6 6 6 6 6 6

5 5 5 5 5 5 5 5 5 5

4 4 4 4 4 4 4 4 4 4

3 3 3 3 3 3 3 3 3 3

2 2 2 2 2 2 2 2 2 2

1 1 1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0 0 0

[Dyuman Joshi]

What have you tried yet? What is the error you are facing? Show your code.

[Abdullah Afar]

for i=1:10 for i=1:10 a(i,j)=i-1 end end In this code print 000000000 111111111 222222222 333333333 444444444 555555555 666666666 ... 9999 But I want to 999999999 888888888 777777777 666666666 ... 00000

Answer 1

[Dyuman Joshi]

%Updating your solution
%pre-allocation
a=zeros(10);
for i=1:10
    for j=1:10
        a(i,j)=10-i;
    end
end
a

a1 = 10×10

9 9 9 9 9 9 9 9 9 9 8 8 8 8 8 8 8 8 8 8 7 7 7 7 7 7 7 7 7 7 6 6 6 6 6 6 6 6 6 6 5 5 5 5 5 5 5 5 5 5 4 4 4 4 4 4 4 4 4 4 3 3 3 3 3 3 3 3 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0

You can also get the same result (directly) by using some other functions (if using for loop is not necessary) -

[~,y]=meshgrid(9:-1:0)

y = 10×10

9 9 9 9 9 9 9 9 9 9 8 8 8 8 8 8 8 8 8 8 7 7 7 7 7 7 7 7 7 7 6 6 6 6 6 6 6 6 6 6 5 5 5 5 5 5 5 5 5 5 4 4 4 4 4 4 4 4 4 4 3 3 3 3 3 3 3 3 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0

x=repelem((9:-1:0)',1,10)

ans = 10×10

9 9 9 9 9 9 9 9 9 9 8 8 8 8 8 8 8 8 8 8 7 7 7 7 7 7 7 7 7 7 6 6 6 6 6 6 6 6 6 6 5 5 5 5 5 5 5 5 5 5 4 4 4 4 4 4 4 4 4 4 3 3 3 3 3 3 3 3 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0

Answer 2

[Abdullah Afar]

for i=1:10 for i=1:10 a(i,j)=i-1 end end

In this code print 000000000 111111111 222222222 333333333 444444444 555555555 666666666 ... 9999

But I want to 999999999 888888888 777777777 666666666 ... 00000