Question

write a program in Java to input a number and calculate its sum of alternative number
please tell the ans fast it's necessary please​

Answer 1

Answer:

for your exam

Explanation:

Examples :

Input : n = 687

Output : 21

Input : n = 12

Output : 3

Recommended: Please solve it on “PRACTICE ” first, before moving on to the solution.

General Algorithm for sum of digits in a given number:

Get the number

Declare a variable to store the sum and set it to 0

Repeat the next two steps till the number is not 0

Get the rightmost digit of the number with help of remainder ‘%’ operator by dividing it with 10 and add it to sum.

Divide the number by 10 with help of ‘/’ operator

Print or return the sum

Below are the solutions to get sum of the digits.

1. Iterative: