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Digit sum - Wikipedia


In mathematics, the digit sum of a given integer is the sum of all its digits Digit sums are most often computed using the decimal representation of the given ...

Add digits of number in c | Programming Simplified


C program to add digits of a number: Here we are using modulus ... C program to find sum of digit of an integer which does not use modulus operator.

parsing - How to sum digits of an integer in java? - Stack Overflow


public static void main(String[] args) { int num = 321; int sum = 0; while (num > 0) ... Are you trying to calculate the digital root of any three digit number? If so, which part is causing you trouble? – Matt Coubrough Nov 24 '14 at 1: ...

java - Sum of all digits for a given Positive Number - Stack Overflow


O(1) Algo for sum Of digits : Taking the modulo 9 of any number will return the sum of .... 10; } return FindSumDigit(sum); }. Find my code.

Write ac program to find out sum of digit of given number


2. C program for sum of digits of a number. 3. C program to calculate sum of digits . #include<stdio.h>. int main(){. int num,sum=0,r;. printf("Enter a number: ");.

C program to find sum of digits of a number - Code for Win


Jun 13, 2015 ... Write a C program to find sum of digits of a number using for loop. Example: if number = 1234 then sum of its digits = 1 + 2 + 3 + 4 = 10.

C Program to Compute the Sum of Digits in a given Integer ...


Nov 7, 2012 ... Then adds all the digits of a given integer, that becomes the sum of digits of integer. ... C program to accept an integer & find the sum of its digits

How to find the sum of the digits of 2^1000 - Quora


If you are using python. Its so trivial I won't even write it. If you are using C or C++, first try to find a bound on number of digits in 2^1000 and then initialize an ...

What is the efficient algorithm to find the sum of the digits of a ...


One way of doing this is by actually computing the factorial. Obviously using primitive data ... What is the efficient algorithm to find the sum of the digits of a number's factorial (number can be upto 500) i.e for num=5, ans=3 (as 5! =120)?

factorial - Find the sum of the digits in the number 100 ...


Jul 24, 2013 ... n ! means n ( n − 1 ) … . . .3 .2 . 1. For example, 10 ! = 10 9 . . . 3 2 1 = 3628800 , and the sum of the digits in the number 10 ! is 3 + 6 + 2 + 8 + 8 ...

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Digit Sum Arithmetic - San Jose State University


The digit sum of a number, say 152, is just the sum of the digits, 1+5+2=8. If the sum of ... For examples, DigitSum(18)=9, DigitSum(27)=9, DigitSum(99)=9, etc.

Sum the digits of a number - python - Stack Overflow


You can do it purely in integers, and it will be the most efficient: def sum_digits(n): s ... If I want to find the sum of the digits of a number, i.e. :.

Compute sum of digits in all numbers from 1 to n - GeeksforGeeks


Given a number x, find sum of digits in all numbers from 1 to n. Examples: Input: n = 5 Output: Sum of digits in numbers from 1 to 5 = 15 Input: n = 12 Output: Sum ...