Algorithm for Java Sum of Digits : step 1: Set sum=0 step 2: Read num step 3: Repeat through step-5 while num greater than 0 step 4: temp=num % 10 step 5: sum=sum+temp
Is that algorithm correct for N larger than 0? Clearly it works when N == 9. We can write a really simple code to compute the sum of the digits directly, for just one iteration, and then just iterate until it is done. dsum = @(n) sum(dec2base(n,10) -'0'); ...
How to compute all digits of the number? Use modulus operator (%) to compute the last digit. Generalise modulus operator idea to compute all digits. To get the digits of a integer, we can iteratedly divide the integer by ten, and retrieve the right-most digit by using modulous operator ...
Sum of DigitsSum of DigitsHere’s an interesting little puzzle/coding exercise. I use it as one of the examples in a presentation I give about how to prepare for a white board coding interview. It’s a fun question, with plenty of depth.Given a number N, calculate the sum of all the...
It's not a homework question. I just thought that someone might know a real solution to this problem. I was on a programming contest back in 2004, and there was this problem: Given n, find sum of digits of n!. n can be from 0 to 10000. Time limit: 1 second. I think there was...
#include <iostream> #include <cstdio> #include <queue> #include <algorithm> #include <map> #include <set> #include <vector> #include <cstring> #include <string> #include <stack> #include <deque> #include <cmath> #include <iomanip> #include <cctype> #define endl '\n' #define IOS ...
What is the sum of the digits of the number 21000? 题解:高精度幂。 代码: #include<iostream> #include<cstdio> #include<cctype> #include<cstdlib> #include<cmath> #include<algorithm> #include<cstring> #include<string> #include<vector> ...
URAL1658 Sum of Digits(DP) 题意:有一个不多于100位的数字,满足各位之和为S1,各位平方之和为S2,求满足该条件的最小数字 思路:首先要理解,S1<=900,为什么呢?假设每一位的数字都取9,那么100位之和就为900,不能再多了,同理,S2<=8100。然后就可以将这个问题泛化为一个二维完全背包问题,有1-9种物品可以...
The first line contains the number of test cases t (no more than 10000). In each of the following t lines there are numbers s1 and s2 (1 ≤ s1, s2 ≤ 10000) separated by a space. They are the sum of digits and the sum of squared digits of the number n. ...
Sum-of-digits function for certain nonstationary bases - Sidorov - 1999 () Citation Context ...se. Here the authors choose the standard base 2 representation of numbers. It is straightforward to generalize their approach for an arbitrary mixed base, and our algorithm is directly applicable. In...