Armstrong Number
给一个数字n, 求n是不是 Armstrong Number. Armstrong Number 就是每个数位上的数pow数字长度后的和等于数字本身.
class Solution {
public boolean isArmstrong(int N) {
int len = String.valueOf(N).length();
int t = 0;
int n = N;
while(N > 0) {
t += Math.pow(N % 10, len);
N /= 10;
}
return t == n;
}
}