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let maxSum = -Infinity; for(let i =0; i < arr.length - 2; i++) { for(let j = 0; j < arr.length - 2; j++) { let sum = arr[i][j] + arr[i+1][j+1] + arr[i+2][j] + arr[i][j+1] + arr[i+2][j+1] + arr[i][j+2] + arr[i+2][j+2]; if(maxSum < sum) { maxSum = sum; } } } console.log(maxSum);
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Day 11: 2D Arrays
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