How Do You Find The First Digit Of A Number?

How do you add the first and last digit of a number in Python?

Python program to print sum of first and last digit of a number.Step 1: Read a number, num.Step 2: Compute num1=num%10.Step 3: Assign num2=num.Step 4: Repeat step 5 while num2=>10.Step 5: Compute num2=num2/10.Step 6: print num1+num2.Step 7: Stop..

What is the first digit of a number?

Decimal . 03579 has 0 as a first digit. In short, the first digit of a number or numeral is the first digit that you perceive reading from left to right.

How do you get the first number from an integer?

firstDigit = number/((int)(pow(10,(int)log(number)))); This should get your first digit using math instead of strings. int number = 534; int firstDigit = number/100; ( / ) operator in java divide the numbers without considering the reminder so when we divide 534 by 100 , it gives us (5) .

How do you find the units digit of a number?

Units digit of Large Numbers – number raised to powerIdentify the units digit in the base ‘x’ and call it say ‘l’. {For example, If x = 24, then the units digit in 24 is 4. Hence l = 4.}Divide the exponent ‘y’ by 4. If the exponent y is exactly divisible by 4. i.e, y leaves a remainder 0 when divided by 4. Then,

How do you find the nth digit of a number?

Approach: The idea is to skip (N-1) digits of the given number in base B by dividing the number with B, (N – 1) times and then return the modulo of the current number by the B to get the Nth digit from the right.

How do you find the second digit of a number?

3 Answers. You can do it by dividing by ten and then taking the remainder of division by ten: int second = (number / 10) % 10; In general, you could think of integer-dividing by a k -th power of ten as of dropping k least significant digits.

How do you get the first digit of a number in Python?

OutputEnter any Number: 466431.The First Digit from a Given Number 466431 = 4.0.Enter any Number: 15246564.The First Digit from a Given Number 15246564 = 1.0.

How do you find the first and last digit of a number?

To find last digit of a number, we use modulo operator %. When modulo divided by 10 returns its last digit. 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.

How do I change the first and last digit of a number?

Algorithm to swap first and last digit of a number:Ask the user to enter an integer number. Suppose n = 12345, where n is an integer variable. … To find the last digit of a number, we use modulo operator %. … Find the first digit with the help of mathematical operation. … Use below logic to swap first and the last digit.