numbers[::-1]
时间: 2024-04-19 10:19:30 浏览: 128
引用[1]和引用2]都没有提到`numbers[::-1]`,但是根据Python的语法,`numbers[::-1]`表示将列表或字符串`numbers`反转。具体来说,`[::-1]`表示从列表或字符串的最后一个元素开始,每次取一个元素,直到第一个元素为止,即实现了反转的效果。
以下是一个例子,展示如何使用`[::-1]`反转一个列表:
```python
numbers = [1, 2, 3, 4, 5]
reversed_numbers = numbers[::-1]
print(reversed_numbers) # 输出:[5, 4, 3, 2, 1]
```
相关问题
Print distinct numbers) Write a program that reads in ten numbers and displays the number of distinct numbers and the distinct numbers separated by exactly one space (i.e., if a number appears multiple times, it is displayed only once). (Hint: Read a number and store it to an array if it is new. If the number is already in the array, ignore it.) After the input, the array contains the distinct numbers. Here is the sample run of the program: ------------------------------------------------ Enter ten numbers: 1 2 3 2 1 6 3 4 5 2 The number of distinct number is 6 The distinct numbers are: 1 2 3 6 4 5 --------------------------------------------
Here's the Python code for the program:
```python
# initialize an empty list to store the distinct numbers
distinct_numbers = []
# read in ten numbers from the user
print("Enter ten numbers: ")
for i in range(10):
num = int(input())
if num not in distinct_numbers:
# add the number to the list if it's not already in it
distinct_numbers.append(num)
# print the number of distinct numbers and the distinct numbers
print("The number of distinct numbers is:", len(distinct_numbers))
print("The distinct numbers are:", end=" ")
for num in distinct_numbers:
print(num, end=" ")
```
Sample output:
```
Enter ten numbers:
1
2
3
2
1
6
3
4
5
2
The number of distinct numbers is: 6
The distinct numbers are: 1 2 3 6 4 5
```