Problem 1153. Accessing elements on the diagonal

Created by HARISANKAR PS

Solve Later

Access the diagonal elements of a matrix without 'diag' function

Solve

Solution Stats

178 Solutions
70 Solvers

Last Solution submitted on Feb 23, 2020

Last 200 Solutions

Problem Comments

1 Comment

1 Comment

Richard Zapor on 30 Dec 2012

Confused by test 6, x = [1:3;4:6;7:9;10:12]';
y_correct = [1 6 11]; I think this should be [1 5 9] as array is [1 4 7 10;2 5 8 11;3 6 9 12]

Solution Comments

Solution 183476

1 Comment

1 Comment

Khaled Hamed on 30 Dec 2012

Right solution to right problem

Solution 183474

1 Comment

1 Comment

Duane Hanselman on 30 Dec 2012

Test #5 is incorrect. Transpose on x makes the diagonal [1 5 9], [1 6 11] are not on any diagonal. #5 is the transpose of #4 and taking the transpose does not change the diagonal, unless you have some other definition for diagonal. A good solution is x(find(eye(size(x))))

Solution 183472

1 Comment

1 Comment

Khaled Hamed on 30 Dec 2012

Rigt solution for wrong problem

Problem Recent Solvers70

Problem Tags

diagonal

Problem 1153. Accessing elements on the diagonal

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers70

Suggested Problems

More from this Author6

Problem Tags

Problem 1153. Accessing elements on the diagonal

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers70

Suggested Problems

More from this Author6

Problem Tags

Players