Python Calculate the Reverse of a Number
Python3 ExamplesIn this example, we will write a Python function to reverse an integer. For example, input 123, output 321.
Example
def reverse_number(n):
reversed_num = 0
while n > 0:
digit = n % 10
reversed_num = reversed_num * 10 + digit
n = n // 10
return reversed_num
# Test function
number = 12345
print("The reversed number is:", reverse_number(number))
reversed_num = 0
while n > 0:
digit = n % 10
reversed_num = reversed_num * 10 + digit
n = n // 10
return reversed_num
# Test function
number = 12345
print("The reversed number is:", reverse_number(number))
Code explanation:
reverse_numberThe function takes an integernas a parameter.reversed_numInitialized to 0, used to store the reversed number.whileThe loop continues whilenis greater than 0.- In each iteration,
digitgetnthe last digit of (vian % 10）。 reversed_numupdated toreversed_num * 10 + digit, thus addingdigitto the end ofreversed_num.nupdated ton // 10, thus removingnthe last digit of .- After the loop ends, return
reversed_num, which is the reversed number.
Output:
反转后的数字是: 54321Other Extensions