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@@ -35,7 +35,7 @@ comments: true
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=== "Python"
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```python title="array.py"
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""" 初始化数组 """
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# 初始化数组
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arr: List[int] = [0] * 5 # [ 0, 0, 0, 0, 0 ]
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nums: List[int] = [1, 3, 2, 5, 4]
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```
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@@ -527,7 +527,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
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}
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```
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删除元素也是类似,如果我们想要删除索引 $i$ 处的元素,则需要把索引 $i$ 之后的元素都向前移动一位。值得注意的是,删除元素后,原先末尾的元素变得“无意义”了,我们无需特意去修改它。
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删除元素也类似,如果我们想要删除索引 $i$ 处的元素,则需要把索引 $i$ 之后的元素都向前移动一位。值得注意的是,删除元素后,原先末尾的元素变得“无意义”了,我们无需特意去修改它。
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@@ -39,8 +39,8 @@ comments: true
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=== "Python"
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```python title=""
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""" 链表节点类 """
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class ListNode:
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"""链表节点类"""
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def __init__(self, val: int):
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self.val: int = val # 节点值
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self.next: Optional[ListNode] = None # 指向下一节点的指针(引用)
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@@ -207,7 +207,7 @@ comments: true
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=== "Python"
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```python title="linked_list.py"
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""" 初始化链表 1 -> 3 -> 2 -> 5 -> 4 """
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# 初始化链表 1 -> 3 -> 2 -> 5 -> 4
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# 初始化各个节点
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n0 = ListNode(1)
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n1 = ListNode(3)
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@@ -934,8 +934,8 @@ comments: true
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=== "Python"
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```python title=""
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""" 双向链表节点类 """
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class ListNode:
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"""双向链表节点类"""
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def __init__(self, val: int):
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self.val: int = val # 节点值
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self.next: Optional[ListNode] = None # 指向后继节点的指针(引用)
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@@ -37,7 +37,7 @@ comments: true
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=== "Python"
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```python title="list.py"
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""" 初始化列表 """
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# 初始化列表
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# 无初始值
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list1: List[int] = []
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# 有初始值
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@@ -135,10 +135,10 @@ comments: true
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=== "Python"
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```python title="list.py"
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""" 访问元素 """
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# 访问元素
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num: int = list[1] # 访问索引 1 处的元素
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""" 更新元素 """
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# 更新元素
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list[1] = 0 # 将索引 1 处的元素更新为 0
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```
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@@ -253,20 +253,20 @@ comments: true
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=== "Python"
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```python title="list.py"
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""" 清空列表 """
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# 清空列表
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list.clear()
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""" 尾部添加元素 """
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# 尾部添加元素
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list.append(1)
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list.append(3)
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list.append(2)
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list.append(5)
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list.append(4)
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""" 中间插入元素 """
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# 中间插入元素
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list.insert(3, 6) # 在索引 3 处插入数字 6
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""" 删除元素 """
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# 删除元素
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list.pop(3) # 删除索引 3 处的元素
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```
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@@ -433,12 +433,12 @@ comments: true
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=== "Python"
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```python title="list.py"
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""" 通过索引遍历列表 """
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# 通过索引遍历列表
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count: int = 0
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for i in range(len(list)):
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count += 1
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""" 直接遍历列表元素 """
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# 直接遍历列表元素
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count: int = 0
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for n in list:
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count += 1
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@@ -571,7 +571,7 @@ comments: true
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=== "Python"
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```python title="list.py"
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""" 拼接两个列表 """
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# 拼接两个列表
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list1: List[int] = [6, 8, 7, 10, 9]
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list += list1 # 将列表 list1 拼接到 list 之后
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```
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@@ -651,7 +651,7 @@ comments: true
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=== "Python"
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```python title="list.py"
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""" 排序列表 """
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# 排序列表
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list.sort() # 排序后,列表元素从小到大排列
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```
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