Surprisingly there are only three numbers that can be written as the sum of fourth powers of their digits:
1634 = 14 + 64 + 34 + 44
8208 = 84 + 24 + 04 + 84
9474 = 94 + 44 + 74 + 44
As 1 = 14 is not a sum it is not included.
The sum of these numbers is 1634 + 8208 + 9474 = 19316.
Find the sum of all the numbers that can be written as the sum of fifth powers of their digits.
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| int sum = 0;
String temp = "";
int tempresult = 0;
for (int i = 0; i < 236196; i++) {
temp = Integer.toString(i);
for (int j = 0; j < temp.length(); j++) {
tempresult += Math.pow(Integer.parseInt(String.valueOf(temp.charAt(j))), 5);
}
if (tempresult == i && !(i==0||i==1)) {
System.out.println(i);
sum += i;
}
tempresult = 0;
}
System.out.println("Ergebnis:" + sum);
|
Lösung: 443839