Web Reference: Mar 27, 2025 · Today I’ll walk you through solving the popular “Diagonal Difference” problem from HackerRank. Diagonal Difference ¶ Diagonal Difference on HackerRank This is a classic matrix problem. The “diagonal difference” is just the easy part (a subtraction). The main challenge here is to sum the diagonals of the given square matrix. Calculate the absolute difference of sums across the two diagonals of a square matrix.
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