Problem 972. Set a diagonal

Given a matrix M, row vector v of appropriate length, and diagonal index d (where 0 indicates the main diagonal and off-diagonals are identified by positive and negative integers), return a new matrix where the specified diagonal of M is replaced by v. You may assume that v is the correct length for the specified diagonal. If d is not provided, assume it is zero.

For example,

M = magic(5);
setDiagonal(M,1:4,-1)
ans =
  17    24     1     8    15
   1     5     7    14    16
   4     2    13    20    22
  10    12     3    21     3
  11    18    25     4     9

Solution Stats

25.47% Correct | 74.53% Incorrect
Last Solution submitted on May 07, 2024

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers268

Suggested Problems

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!