create a magic 5x5 matrix and remove the diagonal elements to generate a new 5x4 matrix. provide 2 different solutions

Create a magic 5x5 matrix and remove the diagonal elements to generate a new 5x5 matrix.Provide 2 different solutions.

please can you provide explanations for why you do each step.

[Steven Lord]

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[Zahgam Saleem]

I have started it and I have given all the questions that i have asked a go. For this question I managed to complete it by myself. but i still needed help with my assignment.

Question 1

Solution 1: >> a=magic(5)

a =

17 24 1 8 15

23 5 7 14 16

4 6 13 20 22

10 12 19 21 3

11 18 25 2 9

>> a(1:6:end)=[]

a =

Columns 1 through 8

23 4 10 11 24 6 12 18

Columns 9 through 16

1 7 19 25 8 14 20 2

Columns 17 through 20

15 16 22 3

>> reshape(a,5,4)

ans =

23 6 19 2

4 12 25 15

10 18 8 16

11 1 14 22

24 7 20 3

Solution 2:

>> a=magic(5)

a =

17 24 1 8 15

23 5 7 14 16

4 6 13 20 22

10 12 19 21 3

11 18 25 2 9

>> a=a-diag(diag(a))

a =

0 24 1 8 15

23 0 7 14 16

4 6 0 20 22

10 12 19 0 3

11 18 25 2 0

>> a(a==0)=[]

a =

Columns 1 through 11

23 4 10 11 24 6 12 18 1 7 19

Columns 12 through 20

25 8 14 20 2 15 16 22 3

>> reshape(a,5,4)

ans =

23 6 19 2

4 12 25 15

10 18 8 16

11 1 14 22

24 7 20 3