Created
December 17, 2020 08:38
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max sub array sum
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| def max_sub_array_of_size_k(k, arr): | |
| max_sum = -1 | |
| running_sum = start_idx = 0 | |
| for tail_idx, num in enumerate(arr): | |
| running_sum += num | |
| if tail_idx - start_idx == k: | |
| running_sum -= arr[start_idx] | |
| start_idx += 1 | |
| max_sum = (running_sum and max(max_sum, running_sum)) or max_sum | |
| return max_sum |
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