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2d-arrays-ds.py

for i in range(len(arr) - 2): for j in range(len(arr) - 2): total = arr[i][j] + arr[i][j+1] + arr[i][j+2] + arr[i+1][j+1] + arr[i+2][j] + arr[i+2][j+1] + arr[i+2][j+2] ...