摘要：
#题目描述：Given an integer n, return the number of trailing zeroes in n!.**Note**: Your solution should be in logarithmic time complexity.#解题思路：这个题目给的评级是e... 阅读全文
摘要：
#题目概述：Given an array and a value, remove all instances of that value in place and return the new length.The order of elements can be changed. It doesn... 阅读全文