class Solution { public: // param n : description of n // return: description of return long long trailingZeros(long long n) { ; ; n / i; i *= ) counts += n / i; return counts; } };…
Write an algorithm which computes the number of trailing zeros in n factorial. Have you met this question in a real interview? Yes Example 11! = 39916800, so the out should be 2 Challenge O(log N) time LeetCode上的原题,请参见我之前的博客Factorial Trailing Zeroes.…
Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements. Notice You must do this in-place without making a copy of the array. Minimize the total number of operations. Exam…
1.A+B问题 给出两个整数a和b, 求他们的和, 但不能使用 + 等数学运算符 思路:作异或得到未进位和,作与并向左移1位得到进位,随后再重复操作俩结果,直到进位为0,适合用递归 public int aplusb(int a, int b) { int sum = a ^ b; int ca = (a & b) << 1; if (ca == 0) { return sum; } return aplusb(sum, ca); } 2016-12-07 2.尾部的零 设计一个算法,…
