How do i find the first and last digit of a number in python?

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Given a number and to find first and last digit of a number.
Examples: 
 

Input : 12345 
Output : First digit: 1
         last digit : 5

Input : 98562
Output : First digit: 9
         last digit : 2

To find last digit of a number, we use modulo operator %. When modulo divided by 10 returns its last digit. 
Suppose if n = 1234 
then last Digit = n % 10 => 4 
To finding first digit of a number is little expensive than last digit. To find first digit of a number we divide the given number by 10 until number is greater than 10. At the end we are left with the first digit.
 

Approach 1 [With loop]:

C++

#include

using namespace std;

int firstDigit[int n]

{

    while [n >= 10] 

        n /= 10;

    return n;

}

int lastDigit[int n]

{

    return [n % 10];

}

int main[]

{

    int n = 98562;

    cout

Javascript

function firstDigit[n]

{

    let digits = Math.floor[Math.log[n]/Math.log[10]]

    n = Math.floor[n / Math.pow[10, digits]]

    return n;

}

function lastDigit[n]{

    return [n % 10]

}

let n = 98562;

document.write[firstDigit[n]," "] 

document.write[lastDigit[n],"
"]

Time Complexity: O[1]
Auxiliary Space: O[1]

Important note: log10[] is a mathematical function present in math.h header file. It returns log base 10 value of the passed parameter to log10[] function.