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[?]Factorial Trailing Zeroes
Given an integer n, return the number of trailing zeroes in n!.Note: Your solution should be in logarithmic time complexity.[分析]首先别忘了什么是factorial,就是阶乘...
分类:其他好文   时间:2015-09-11 09:15:29    阅读次数:108
LeetCode Day4——Factorial Trailing Zeroes
1 /* 2 * Problem 172: Factorial Trailing Zeroes 3 * Given an integer n, return the number of trailing zeroes in n!. 4 * Note: Your solution should...
分类:其他好文   时间:2015-09-08 00:23:02    阅读次数:157
[Leetcode172]Factorial Trailing Zeroes
Given an integer n, return the number of trailing zeroes in n!. Note: Your solution should be in logarithmic time complexity. solution: zero comes from 2*5, and number of 2 is less than 5. So...
分类:其他好文   时间:2015-09-02 08:16:22    阅读次数:170
[LeetCode#263]Factorial Trailing Zeroes
Problem:Write a program to check whether a given number is an ugly number.Ugly numbers are positive numbers whose prime factors only include2, 3, 5. F...
分类:其他好文   时间:2015-09-01 06:57:10    阅读次数:144
[LeetCode#172]Factorial Trailing Zeroes
Problem:Given an integern, return the number of trailing zeroes inn!.Note:Your solution should be in logarithmic time complexity.Credits:Special thank...
分类:其他好文   时间:2015-08-31 23:11:53    阅读次数:118
leetcode-172-Factorial Trailing Zeroes
Factorial Trailing Zeroes Given an integer n, return the number of trailing zeroes in n!. Note: Your solution should be in logarithmic time complexity. 求 n!中,末尾的0连续有多少个。 例如 10!=10*...
分类:其他好文   时间:2015-08-31 19:35:36    阅读次数:116
Lua学习笔记--函数初探
感觉学习语言的话,函数是个重头戏。来看一下Lua的函数是神马样纸的东东! 一.简单的函数例子 --一个简单的函数:阶乘 function factorial(num) if num == 0 then return 1 else return num * factorial(num - 1) end end恩,这就是个函数。function关键字,说明这是个函数,然后是函...
分类:其他好文   时间:2015-08-25 12:01:32    阅读次数:227
projecteuler---->problem=34----Digit factorials
Problem 34145 is a curious number, as 1! + 4! + 5! = 1 + 24 + 120 = 145.Find the sum of all numbers which are equal to the sum of the factorial of the...
分类:其他好文   时间:2015-08-21 09:23:31    阅读次数:130
【LeetCode】172 - Factorial Trailing Zeroes
Given an integern, return the number of trailing zeroes inn!.Note:Your solution should be in logarithmic time complexity.Solution :计算包含的2和5组成的pair的个数,...
分类:其他好文   时间:2015-08-05 20:01:38    阅读次数:108
数据结构基础 算法复杂度分析(二) 典例篇
示例代码(1) decimal Factorial(int n) { if (n == 0) return 1; else return n * Factorial(n - 1); } 【分析】 阶乘(factorial),给定规模 n,算法基本步骤执行的数量为 n,所以算法复杂度为 O(n)。 示例代码(2) int FindMaxElement(int[] array) { int max = array[0]...
分类:编程语言   时间:2015-08-02 21:43:05    阅读次数:174
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