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.
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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; } } |