Problem 340. Find last non-zero in a given dimension
You are given a logical matrix BW of any dimension, and a dimension dim. You need to find the locations of the last non-zero element of BW in that given dimension. If no non-zeros exist at an element location, return a 0 at that location.
For example, given:
BW = [0 0 0 0; 1 1 1 1; 0 1 1 0]
When dim = 1, you should return:
ans = [2 3 3 2], because these are the row numbers of the last non-zeroes in each column.
When dim = 2, you should return:
ans = [0; 4; 3], because these are the column numbers of the last non-zeroes in each row.
Don't forget that the input isn't restricted to 2D matrices.
Solution Stats
Problem Comments
-
1 Comment
What is the 3 and 4 dimension in matrix? How is it used?
Solution Comments
Show commentsProblem Recent Solvers38
Suggested Problems
-
24703 Solvers
-
Find the two most distant points
2825 Solvers
-
160 Solvers
-
Find the maximum number of decimal places in a set of numbers
2771 Solvers
-
Create a vector whose elements depend on the previous element
649 Solvers
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!