Implement the method sumDigits that takes an integer as input and returns the sum of its digits.
You need to write a function that calculates the sum of all digits in a given integer.
The function should ignore the sign of the number — treat negative numbers as positive.
For example:
sumDigits(123)→1 + 2 + 3 = 6sumDigits(-45)→4 + 5 = 9
Example 1
Input
n (int) =
123Returns (int)
6Example 2
Input
n (int) =
0Returns (int)
0Example 3
Input
n (int) =
-98Returns (int)
17Example 4
Input
n (int) =
1001Returns (int)
2Example 5
Input
n (int) =
-9999Returns (int)
36To calculate the sum of digits:
- Convert the number to its absolute value (to ignore sign).
- Use a loop to extract each digit using
% 10. - Add each digit to a running total.
- Divide the number by 10 and repeat until it becomes 0.
- Return the total.
Pseudocode:
Function sumDigits(n):
n ← absolute value of n
total ← 0
While n > 0:
digit ← n mod 10
total ← total + digit
n ← n div 10
Return total
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