【特别数的和】`%10`每次取个位

特别数的和

n % 10 每次仅取个数上的数。
如:1234 % 10 = 41234 / 10 = 123123 % 10 = 3

private static boolean cheak(int n) {
    
    
	while (n != 0) {
    
    
		int a = n % 10;
		if (a == 2 || a == 0 || a == 1 || a == 9) {
    
    
			return true;
		}
		n /= 10;
	}
	return false;
}

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转载自blog.csdn.net/m0_60641871/article/details/129748330