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@@ -624,8 +624,8 @@ $$
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=== "Python"
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```python title="space_complexity.py"
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""" 常数阶 """
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def constant(n):
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""" 常数阶 """
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# 常量、变量、对象占用 O(1) 空间
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a = 0
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nums = [0] * 10000
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@@ -829,8 +829,8 @@ $$
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=== "Python"
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```python title="space_complexity.py"
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""" 线性阶 """
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def linear(n):
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""" 线性阶 """
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# 长度为 n 的列表占用 O(n) 空间
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nums = [0] * n
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# 长度为 n 的哈希表占用 O(n) 空间
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@@ -996,8 +996,8 @@ $$
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=== "Python"
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```python title="space_complexity.py"
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""" 线性阶(递归实现) """
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def linear_recur(n):
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""" 线性阶(递归实现) """
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print("递归 n =", n)
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if n == 1: return
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linear_recur(n - 1)
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@@ -1127,8 +1127,8 @@ $$
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=== "Python"
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```python title="space_complexity.py"
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""" 平方阶 """
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def quadratic(n):
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""" 平方阶 """
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# 二维列表占用 O(n^2) 空间
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num_matrix = [[0] * n for _ in range(n)]
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```
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@@ -1171,7 +1171,9 @@ $$
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/* 平方阶 */
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function quadratic(n: number): void {
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// 矩阵占用 O(n^2) 空间
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const numMatrix = Array(n).fill(null).map(() => Array(n).fill(null));
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const numMatrix = Array(n)
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.fill(null)
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.map(() => Array(n).fill(null));
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// 二维列表占用 O(n^2) 空间
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const numList = [];
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for (let i = 0; i < n; i++) {
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@@ -1273,8 +1275,8 @@ $$
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=== "Python"
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```python title="space_complexity.py"
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""" 平方阶(递归实现) """
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def quadratic_recur(n):
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""" 平方阶(递归实现) """
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if n <= 0: return 0
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# 数组 nums 长度为 n, n-1, ..., 2, 1
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nums = [0] * n
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@@ -1403,8 +1405,8 @@ $$
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=== "Python"
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```python title="space_complexity.py"
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""" 指数阶(建立满二叉树) """
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def build_tree(n):
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""" 指数阶(建立满二叉树) """
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if n == 0: return None
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root = TreeNode(0)
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root.left = build_tree(n - 1)
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