Take input number from the user and print its reverse.

從用戶處獲取輸入號碼并打印其反面。

Example:

例：

Input:12345Output:54321

Here, we are implementing program to reversing a given number using 2 different ways.

在這里，我們正在實施程序，以使用2種不同的方式來反轉給定的數字 。

1) Famous approach for reversing the number: Take input from the user and typecast into an integer, then iterate in the loop till num is not become zero, inside the loop:

1) 逆轉數字的著名方法 ：從用戶輸入并將其類型轉換為整數，然后在循環中循環直到num在循環內不為零：

• Find out the remainder.

  找出其余的。

• Using this: rev_num = rev_num * 10 + remainder.

  使用這個：rev_num = rev_num * 10 +余數。

• Update that number by diving by 10.

  通過跳水10來更新該數字。

• After coming out of the loop printing the reverse number.

  退出循環后，打印反向編號。

if __name__ == "__main__" :# take string input from usernum = int(input('Enter a number: '))rev_num = 0# iterate the loop till num is not equal to zerowhile(num) :rem = num % 10rev_num = rev_num* 10 + remnum //= 10print('Reverse number is: ', rev_num)

Output

輸出量

Enter a number: 12345 Reverse number is: 54321

2) Make a user-defined function for reversing the Number: Take input from the user and typecast into integer, thenreverseNum() function call.

2) 制作一個用于反轉Number的用戶定義函數 ：從用戶那里輸入輸入并將其類型轉換為整數，然后調用verseNum()函數。

Inside the function:

函數內部：

• Iterate in the loop till num does not become zero:

  在循環中迭代，直到num不為零：

• Find out the remainder.

  找出其余的。

• Using this: rev_num = rev_num * 10 + remainder.

  使用這個：rev_num = rev_num * 10 +余數。

• Update that number by diving by 10.

  通過跳水10來更新該數字。

• After coming out of the loop returning the reverse number to the main.

  退出循環后，將反向編號返回到主編號。

# define a function for finding # reverse of the number def reverseNum(num) :rev_num = 0# iterate the loop till num is not equal to zerowhile(num) :rem = num % 10rev_num = rev_num* 10 + remnum //= 10return rev_num# Main() method if __name__ == "__main__" :# take string input from usernum = int(input('Enter a number: '))print('Reverse number is: ', reverseNum(num))

Output

輸出量

Enter a number: 12345 Reverse number is: 54321

翻譯自: https://www.includehelp.com/python/program-to-reverse-a-given-number-2-different-ways.aspx

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