Practice · 2 of 5

Per-column balances

CHALLENGE

Difficulty: advanced+25 XP

A ledger grid holds debits (negative) and credits (positive). Return the sum of the **absolute per-column balances** (sum each column, then add the absolute values of the column sums). Implement process(int[][] g). Example: {{5,-3,2},{-4,1,0}} → column sums 1, -2, 2 → 1+2+2 = 5.

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