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One liner in Python 3:
print(max([sum(arr[i-1][j-1:j+2] + [arr[i][j]] + arr[i+1][j-1:j+2]) for j in range(1, 5) for i in range(1, 5)]))
As array indices also start from zero, it would be convenient to let range function start from 0 (which it does by default):
print(max([sum(arr[i][j:j+3] + [arr[i+1][j+1]] + arr[i+2][j:j+3]) for i in range(4) for j in range(4)]))
Why does the max function contain brackets that also wrap around everything inside?
it's a list comprehension https://python-course.eu/list_comprehension.php
Excellent Well done
print(max(sum(arr[i-1][j-1:j+2] + [arr[i][j]] + arr[i+1][j-1:j+2]) for j in range(1, 5) for i in range(1, 5))) no '[]' list generator,more faster!
2D Array - DS
You are viewing a single comment's thread. Return to all comments →
One liner in Python 3:
As array indices also start from zero, it would be convenient to let range function start from 0 (which it does by default):
print(max([sum(arr[i][j:j+3] + [arr[i+1][j+1]] + arr[i+2][j:j+3]) for i in range(4) for j in range(4)]))
Why does the max function contain brackets that also wrap around everything inside?
it's a list comprehension https://python-course.eu/list_comprehension.php
Excellent Well done
print(max(sum(arr[i-1][j-1:j+2] + [arr[i][j]] + arr[i+1][j-1:j+2]) for j in range(1, 5) for i in range(1, 5))) no '[]' list generator,more faster!