python # 示例字符串 original_string = "Hello, World!" reversed_string = original_string[::-1] print("反转后的字符串:", reversed_string) # 示例列表 original_list = [1, 2, 3, 4, 5] reversed_list = original_list[::-1] print("反转后的列表:", reversed_list) 运行这段代码后,输出...
If you want to loop over the reversed list, use the in built reversed() function, which returns an iterator (without creating a new list) num_list = [1, 2, 3, 4, 5]fornuminreversed(num_list):printnum,#prints 5 4 3 2 1
Learn how to reverse a String in Python.There is no built-in function to reverse a String in Python.The fastest (and easiest?) way is to use a slice that steps backwards, -1.ExampleGet your own Python Server Reverse the string "Hello World": txt = "Hello World"[::-1]print(txt) ...
print("Reversed number: ", reverse_number(number)) In this code, the functionreverse_numberuses Python’s built-in functionsstrandintto convert the input number into a string and then back into an integer. The slicing operation[::-1]is used to reverse the string. Output: Reverse Number in...
i -=1print(reversed_str) Which will result in: "!dlroW olleH" Conclusion As we've seen in this article, there are plenty of approaches on how to reverse a string in Python, and each of them has its strengths and weaknesses. Generally speaking, the one way you should choose for the ...
To reverse this list, you can use the slicing here by passing the-1as shown below. reversed_patients = patients[::-1] print(reversed_patients) From the output, you can see that the slicing method completely reverses the order of the items in the list: the first items become the last, ...
Learn how to reverse a range in Python easily with this step-by-step guide. Discover efficient techniques and examples to master this task.
To reverse a string in python, we can use the slice syntax by passing the step of -1 and leaving beginning and end positions. Here is an example. mystring = "python" reversed_string = mystring [::-1] print(reversed_string) Output: nohtyp Similarly, we can also use the join() func...
Using Python for loop, you can iterate over characters in a string and append a character to the beginning of a new string. This will reverse the provided string. Reverse string using for loop a = 'Python' b = '' for c in a: b = c + b print(b) # nohtyP Reverse the string ...
Python: How to iterate list in reverse order #1 for index, val in enumerate(reversed(list)): print len(list) - index - 1, val #2 def reverse_enum(L): for index in reversed(xrange(len(L))): yield index, L[index] L = ['foo', 'bar', 'bas']...