Given a non-negative integer n, count all numbers with unique digits, x, where 0 ≤ x < 10^n. Example:Given n = 2, return 91. (The answer should be the ...
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其他好文 时间:
2016-08-19 14:48:51
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96
Print numbers from 1 to the largest number with N digits by recursion. Notice It's pretty easy to do recursion like: recursion(i) { if i > largest num ...
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其他好文 时间:
2016-08-18 06:29:46
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134
Life is painting a picture, not doing a sum. 生活就像是绘画,而不是做算术。 I am too serious about digits. All what I do must be measurable, otherwise I will feel fr ...
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其他好文 时间:
2016-08-18 01:07:51
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123
解题思路一:
找规律,动态规划。
f(n):长度为n的数字中包含的独立数位的数字个数。
f(1) = 10 (0,1,2,3,4,...9)
f(2)=9*9 ,因为十位只能是(1,2,...9),对于十位的每个数,个位只能取其余的9个数字。
f(3)=f(2)*8=9*9*8
f(10)=9*9*8*7...*1
f(11)=0=f(12)=f(13)....
class So...
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其他好文 时间:
2016-08-17 12:22:07
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150
Reverse digits of an integer. Returns 0 when the reversed integer overflows (signed 32-bit integer). Reverse digits of an integer. Returns 0 when the ...
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其他好文 时间:
2016-08-17 01:22:13
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386
Additive number is a string whose digits can form additive sequence. A valid additive sequence should contain at least three numbers. Except for the f ...
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其他好文 时间:
2016-08-16 00:20:25
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156
NVIDIA DIGITS 学习笔记(NVIDIA DIGITS-2.0 + Ubuntu 14.04 + CUDA 7.0 + cuDNN 7.0 + Caffe 0.13.0) enjoyyl 2015-09-02 机器学习 75原文链接 NVIDIA DIGITS-2.0 + Ubuntu 1... ...
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系统相关 时间:
2016-08-14 17:45:51
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468
sum-root-to-leaf-numbers 题目描述 Given a binary tree containing digits from0-9only, each root-to-leaf path could represent a number. An example is the ro ...
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其他好文 时间:
2016-08-14 07:16:36
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155
Leading and Trailing You are given two integers: n and k, your task is to find the most significant three digits, and least significant three digits o ...
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其他好文 时间:
2016-08-12 21:36:08
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114
Question:
Given a string containing only digits, restore it by returning all possible valid IP address combinations.
For example:
Given "25525511135",
return ["255.255.11.135", "255.255.111....
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其他好文 时间:
2016-08-11 22:46:44
阅读次数:
116