摘要：
!!!题目地址!!! int subtractProductAndSum(int n){ int product = 1; int sum = 0; while(n != 0){ product *= n%10; sum += n%10; n /= 10; } return product-sum; 阅读全文
摘要：
！！！题目地址！！！ int hammingWeight(uint32_t n) { int total = 0; for (int i = 0; i < 32; i++) { total += (n & 1); n = n >> 1; } return total; } 阅读全文