摘要：
Factorial Trailing ZeroesGiven an integern, return the number of trailing zeroes inn!.题目意思：n求阶乘以后，其中有多少个数字是以0结尾的。方法一：class Solution: # @return an i... 阅读全文
摘要：
Pascal's TriangleGivennumRows, generate the firstnumRowsof Pascal's triangle.For example, givennumRows= 5,Return[ [1], [1,1], [1,2,1], [1,3,... 阅读全文
摘要：
Given an array of sizen, find the majority element. The majority element is the element that appears more than⌊ n/2 ⌋times.You may assume that the arr... 阅读全文