Problem 314. Find the sum of the elements in the "second" diagonal

Created by Roy Fahn
Appears in Indexing V

Difficulty:Rate

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Find the sum of the elements in the diagonal that starts at the top-right corner and ends at the bottom-left corner.

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2272 Solutions
1160 Solvers

Last Solution submitted on Mar 28, 2025

Last 200 Solutions

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4 Comments

4 Comments

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Gaik Tamazian on 17 Feb 2012

There are only magic squares in test cases, however the problem doesn't specify a type of the matrix.

David Young on 1 Mar 2012

You should definitely strengthen the test suite. Lots of solutions rely on both diagonals being the same, even though this is not a property of the stated problem.

Kye Taylor on 7 Apr 2012

The "antidiagonal" is cooler sounding than "second diagonal"

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Indexing V

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