def reverse_enum(L): for index in reversed(xrange(len(L))): yield index, L[index] L = ['foo', 'bar', 'bas'] for index, item in reverse_enum(L): print index, item #3 L = ['foo', 'bar', 'bas'] for index in reversed(range(len(L))): print index, L[index]...
在此示例中,我们有一个作为序列的列表,并使用while循环按倒序迭代它− # 创建列表mylist=["Jacob","Harry","Mark","Anthony"]# 显示列表print("List = ",mylist)# 长度 - 1i=len(mylist)-1# 按倒序迭代print("Display the List in Reverse order = ")whilei>=0:print(mylist[i])i-=1 Bash ...
Basically, thereversed()function is good when you want to iterate over a list in reverse order without creating a copy. You can also convert the iterator into a list if you need a reversed version of the list itself. numbers=[1,2,3,4,5]#Convert the iterator to a listreversed_numbers...
section 倒序遍历 Iterate over the list in reverse order section 打印元素 Print each element 使用mermaid语法展示关系图 此外,我们还可以利用mermaid语法中的erDiagram来展示列表元素之间的关系: LISTintlengthELEMENTintvaluecontains 这个关系图展示了列表(LIST)和元素(ELEMENT)之间的关系,以及列表的一些基本属性。 结...
7.how do I iterate over a sequence in reverse order for x in reversed(sequence): … # do something with x.. 如果不是list, 最通用但是稍慢的解决方案是: for i in range(len(sequence)-1, -1, -1): x = sequence[i] 8.Python是如何进行类型转换的?
【Python面试真题】-how do I iterate over a sequence in reverse order? for x in reversed(sequence): ... # do something with x.. 如果不是list, 最通用但是稍慢的解决方案是: for i in range(len(sequence)-1, -1, -1): x = sequence[i] ...
[key]) ... three -> 3 two -> 2 one -> 1 >>> # Iterate over the items in reverse order >>> for key, value in reversed(numbers.items()): ... print(key, "->", value) ... three -> 3 two -> 2 one -> 1 >>> # Iterate over the keys in reverse order >>> for key...
In this example, you iterate over the keys of incomes in reverse-sorted order by using the reverse argument to sorted() in the header of your for loop. This example sorts the keys. Why don’t you try writing an example that sorts the values in reverse order?
Just like before, you can use sorted() to iterate through each element of the iterable you pass in. In a string, each element means each character, including spaces. Note: Python sorts strings lexicographically by comparing Unicode code points of the individual characters from left to right. ...
Example 2: Iterate string in reverse order name = "Jessa" for i in name[::-1]: print(i, end=' ') Run Output: a s s e J Example 3: Iterate over a particular set of characters in string name = "Jessa watson" for char in name[2:7:1]: print(char, end=' ') Run Output...