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Hi!
I´m new to java and just started to learn but have a little problem. What I want to know is how I can get a long integer from the user and then caculate the sum of the separate numbers? I thinking I would use som sort of array and then calculate from there. The thing is I´m use to ada programminglanguage so I understand the problem but don´t really know how to tackle the problem in java.
So if someone could help I would be grateful!
//Viktor
int n = longInteger;
String s = String.valueOf(n);
Use methods in the String class to get each digit to parse with Integer parseInt method.
If you are reading from the user, its already a String. No need to make it an Integer that you are not going to use.
With the string, you can just use a for loop to iterate through each character
This may not work, I typed it into the forum, not a compiler, but it should get you going. Debug on your own, its part of learningCode:long sum = 0;
for (int i=0; i < arg.length(); i++) {
String c = arg.substring(i,i);
sum += Integer.valueOf(c);
}