108. Convert Sorted Array to Binary Tree#18
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hiro111208 wants to merge 1 commit into
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h-masder
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Apr 27, 2026
| if l > r: | ||
| return None | ||
| middle_index = (l + r) // 2 | ||
| root = TreeNode(nums[middle_index]) |
| root.left = helper(l, middle_index - 1) | ||
| root.right = helper(middle_index + 1, r) | ||
| return root | ||
| return helper(0, len(nums) - 1) |
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helperを使ってうまくスライスを避けているのがいいなと思いました。
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