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EularProject 34: 一个数字与他每位数的阶乘和
Digit factorials Problem 34 145 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 their digits.Note: as 1! = 1 and 2...
分类:其他好文   时间:2015-07-09 00:50:46    阅读次数:166
[LeetCode][JavaScript]Number of Digit One
Number of Digit OneGiven an integer n, count the total number of digit 1 appearing in all non-negative integers less than or equal to n.For example:Gi...
分类:编程语言   时间:2015-07-09 00:24:37    阅读次数:154
Leetcode 233 Number of Digit One
1. 问题描述  给定一个整数n,在所有不大于n的非负整数中,计算包含数字1的整数的个数。例如n=13n = 13的结果为6,包含1的数字有1,10,11,12,13。2. 方法与思路  这个问题最直观的方法就是累加1到n所有的包含1的数的个数。每个数通过循环取余10的方法判断是否包含1。但是这种思路效率并不高,数字n有lognlogn位,总得时间复杂度为O(nlogn)O(nlogn)。   利...
分类:其他好文   时间:2015-07-08 12:58:00    阅读次数:115
Project Euler:Problem 56 Powerful digit sum
A googol (10100) is a massive number: one followed by one-hundred zeros; 100100 is almost unimaginably large: one followed by two-hundred zeros. Despite their size, the sum of the digits in each num...
分类:其他好文   时间:2015-07-08 09:39:56    阅读次数:101
leetcode 233: Number of Digit One
leetcode 233: Number of Digit One java python c++...
分类:其他好文   时间:2015-07-08 09:34:54    阅读次数:439
[LeetCode] Number of Digit One 数字1的个数
Given an integer n, count the total number of digit 1 appearing in all non-negative integers less than or equal to n. For example: Given n = 13,Return...
分类:其他好文   时间:2015-07-08 07:06:15    阅读次数:122
[LeetCode] Number of Digit One
The following idea is taken from a book named 《剑指offer》 published in China.Supposen = 271, it then breaks[1, 271]into[1, 71]and[72, 271]. For[72, 271]...
分类:其他好文   时间:2015-07-08 02:07:20    阅读次数:149
LeetCode17:Letter Combinations of a Phone Number
Given a digit string, return all possible letter combinations that the number could represent.A mapping of digit to letters (just like on the telephone buttons) is given below. Input:Digit string “2...
分类:其他好文   时间:2015-07-07 19:36:09    阅读次数:152
MCC460MNC08
因为搜得辛苦,正好也写点关于我morto工作有关的事情,给大家和我一样扫盲,哈哈The GSM Mobile Country Code (MCC) is different from the international dialing country code. It is a 3 digit co...
分类:其他好文   时间:2015-07-07 12:30:04    阅读次数:128
nyoj473 A^B Problem (快速幂)
题目473 题目信息 运行结果 本题排行 讨论区 A^B Problem 时间限制:1000 ms  |  内存限制:65535 KB 难度:2 描述Give you two numbers a and b,how to know the a^b's the last digit number.It looks so easy,but eve...
分类:其他好文   时间:2015-07-06 10:18:14    阅读次数:124
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