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...
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其他好文 时间:
2015-07-09 00:50:46
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166
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...
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编程语言 时间:
2015-07-09 00:24:37
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154
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...
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其他好文 时间:
2015-07-08 12:58:00
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115
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...
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其他好文 时间:
2015-07-08 09:39:56
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101
leetcode 233: Number of Digit One
java python c++...
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其他好文 时间:
2015-07-08 09:34:54
阅读次数:
439
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...
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其他好文 时间:
2015-07-08 07:06:15
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122
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]...
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其他好文 时间:
2015-07-08 02:07:20
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149
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...
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其他好文 时间:
2015-07-07 19:36:09
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152
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...
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其他好文 时间:
2015-07-07 12:30:04
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128
题目473
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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...
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其他好文 时间:
2015-07-06 10:18:14
阅读次数:
124