Problem 1158. Sum the elements in either diagonal of a square matrix

Created by Tom Holz

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Sum the elements of a square matrix that lie on either the major diagonal or anti-diagonal. (Include all elements that are part of either of the diagonals).

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Last Solution submitted on Oct 28, 2025

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Gareth Lee on 1 May 2015

the description of your problem is wrong, not the same as test suits. the either..or... should be both...and...

Tom Holz on 31 May 2017

I updated the description to clarify the ambiguity mentioned by Gareth Lee on 1 May 2015.

Tom Holz on 31 May 2017

With apologies for the 2 year delay, I've updated the description to be a little more explicit.

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Problem 1158. Sum the elements in either diagonal of a square matrix

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Last 200 Solutions

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Problem Recent Solvers215

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Problem 1158. Sum the elements in either diagonal of a square matrix

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers215

Suggested Problems

More from this Author2

Problem Tags

Community Treasure Hunt

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