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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Sum-digits-of-an-integer/Java/sum-digits-of-an-integer.java Normal file
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import java.math.BigInteger;
public class SumDigits {
public static int sumDigits(long num) {
return sumDigits(num, 10);
}
public static int sumDigits(long num, int base) {
String s = Long.toString(num, base);
int result = 0;
for (int i = 0; i < s.length(); i++)
result += Character.digit(s.charAt(i), base);
return result;
}
public static int sumDigits(BigInteger num) {
return sumDigits(num, 10);
}
public static int sumDigits(BigInteger num, int base) {
String s = num.toString(base);
int result = 0;
for (int i = 0; i < s.length(); i++)
result += Character.digit(s.charAt(i), base);
return result;
}
public static void main(String[] args) {
System.out.println(sumDigits(1));
System.out.println(sumDigits(12345));
System.out.println(sumDigits(123045));
System.out.println(sumDigits(0xfe, 16));
System.out.println(sumDigits(0xf0e, 16));
System.out.println(sumDigits(new BigInteger("12345678901234567890")));
}
}