# sort(reverse):从大到小降序排列 s = [5,9,1,2,10,23,43] s.sort(reverse=True) print(s) # 输出结果:[43, 23, 10, 9, 5, 2, 1] # reverse:倒序排列 s = [1,2,3,4,5,6,7,8,9] s.reverse() print(s) # 输出结果:[9, 8, 7, 6, 5, 4, 3, 2, 1] 1. 2. 3. 4...
与Ruby 不同,Python3 没有一个明确的 flatten 函数。但是我们可以使用 list comprehension 来平坦一个列表的列表。 li = [[1,2,3],[4,5,6]] [i for x in li for i in x] #=> [1, 2, 3, 4, 5, 6] 1. 2. 3. 生成一个2个值之间的每个整数的列表 我们可以在2个值之间创建一个范围,然...
.reverse()这个方法的返回值就是空 一般使用的时候直接 list.reverse()print(list)就行 该方法没有返回值，但是会对列表的元素进行反向排序。所以直接print（list）来查看反向排列的情况就好reverse原地逆反list你执行list.reverse()print(list)
print(list(reversed([1, 2, 3]))) # 输出: [3, 2, 1] 4. 迭代与生成 range(start, stop, step):生成整数序列。 python 复制代码 print(list(range(5))) # 输出: [0, 1, 2, 3, 4] enumerate(iterable, start=0):返回索引和值的迭代器。 python 复制代码 for i, v in enumerate(["a",...
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```python class ListNode: def __init__(self, val=0, next=None): self.val = val self.next = next def reverse_linked_list(head): prev = None curr = head while curr: next_node = curr.next curr.next = prev prev = curr curr = next_node return prev # 测试 node1 = ListNode(1)...
# Python program to find positive numbers from a list# Getting list from usermyList=[]length=int(input("Enter number of elements : "))foriinrange(0,length):value=int(input())myList.append(value)# printing all positive values of the listprint("All positive numbers of the list : ")for...
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A. To print linked list data B. To reverse a linked list C. To delete a linked list D. To create a linked list Show Answer 2. Which programming language is used in the examples provided? A. C B. C++ C. Java D. Python Show Answer Advertisement - This is a modal ...
2.reverse() --倒置 a.reverse() 将a列表倒置,不含参 3.extend()–添加 将两个列表连接起来 如a是个列表,b是个列表,则a.extend(b)表示a中添加进了b的元素 4.insert()–添加 添加元素到指定位置之前一位(即变成哪个位置),列表第一个位置是0 ...