Python string library does’nt support the in-built “reverse()” as done by other python containers like list, hence knowing other methods to reverse string can prove to be useful. This article discusses several ways to achieve it. Using loop # Python code to reverse a string # using loop...
$ python3.7 -m timeit --number 100000 --unit usec 'import string_reverse' 'string_reverse.reverse_for_loop("ABç∂EF"*10)' 100000 loops, best of 5: 5.5 usec per loop $ python3.7 -m timeit --number 100000 --unit usec 'import string_reverse' 'string_reverse.reverse_while_loop("AB...
Reverse for loop using range() Nested for loops While loop inside for loop for loop in one line Accessing the index in for loop Iterate String using for loop Iterate List using for loop Iterate Dictionary using for loop What is for loop in Python In Python, the for loop is used to iter...
>>>text=ReversibleString("Hello, World!")>>># Support reverse iteration out of the box>>>forcharinreversed(text):...print(char)...!dlroW,olleH>>>text"Hello, World!" Here, you callreversed()withtextas an argument to feed aforloop. This call works as expected and returns the correspon...
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 Python Using For Loop ...
To loop in the reverse direction, you can use Python's built-in reversed function:>>> colors = ["purple", "blue", "green", "pink", "red"] >>> for color in reversed(colors): ... print("I like", color) ... I like red I like pink I like green I like blue I like ...
exercise above the code defines a function named "string_reverse()" that takes a string as input and returns its reversed version using a while loop and string manipulation. The final print statement demonstrates the result of calling the "string_reverse()" function with the input string '1234...
A)正确 B)错误 答案:对 解析: 166.[判断题]在GUI 设计中,复选框往往用来实现非互斥的功能,多个复选框之间的选择互不影响 答案:对 解析: 167.[判断题]You cannot use a for loop to iterate over the characters in a string. A)正确 B)错误 答案:错 解析: 168.[判断题]定义函数时必须要定义形参。
Programming'string_reversed=test_string[-1::-1]print(string_reversed)string_reversed=test_string[::-1]print(string_reversed)# String reverse logically defstring_reverse(text):r_text=''index=len(text)-1whileindex>=0:r_text+=text[index]index-=1returnr_textprint(string_reverse(test_string))...
list是一个有序的列表。我们可以根据顺序来for循环遍历整个list。使用string和tuple的时候也可以这样子for loop 遍历。这是非常符合代码直觉的,因为遍历的都是有序的对象。然而我们使用字典的时候,无序的对象我们依然能够进行for loop遍历。 因为for loop要求对象是一个可迭代的对象(iterable)。