Problem 972. Set a diagonal
Solution Stats
Problem Comments
-
10 Comments
Added new test case 9 Oct. 2012
Are you missing some text from your example?
Test suggestion: Stick a zero in one of your v vectors and you'll eliminate some of the shorter answers.
Yes. All solutions with find don't work with 0 in v.
Thanks for the suggestions -- I updated the text, added a new test case and rescored.
@Nicholas Howe: The test suggestion meant: stick a 0 in v, and this 0 is meant to replace an entry of M that was unequal to 0. In other words: the new test-case doesn't make a difference (and hence is useless) if M is a null-matrix.
The cases with d=0 are working for me but your test cases are giving error..... What's this?
please, when you make use of test cases with floating point numbers specify a common precision, otherwise is impossible to pass the suite and people need to be noob! thx in advanced
Please add a precision threshold for floating numbers. Sometimes I get results with an error ~ e-17 close, but still not accepted.
Test cases with 2 input arguments can be very tricky for people without knowledge of nargin, and that is off-topic here. I think a hint should be added on the problem description.
Solution Comments
-
1 Comment
Why does it fail Test #2?
-
1 Comment
Wouldn't work if d was undefined and M wasn't a diagonal matrix.
-
2 Comments
I like the try/catch with ans
It seems Matlab allows for many useful tricks. I was surprised at the behavior of 'diag' in the leading solution.
Problem Recent Solvers222
Suggested Problems
-
8086 Solvers
-
Number of 1s in the Binary Representation of a Number
400 Solvers
-
Arrange Vector in descending order
7957 Solvers
-
Write a function man that takes a row vector v and returns a matrix H as follows..
571 Solvers
-
Find my daddy long leg (No 's')
1639 Solvers
More from this Author11
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!