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Count Numbers with Unique Digits -- LeetCode
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 ...
分类:其他好文   时间:2016-08-19 14:48:51    阅读次数:96
Print Numbers by Recursion
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 ...
分类:其他好文   时间:2016-08-18 06:29:46    阅读次数:134
August 17th 2016 Week 34th Wednesday
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 ...
分类:其他好文   时间:2016-08-18 01:07:51    阅读次数:123
Count Numbers with Unique Digits
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...
分类:其他好文   时间:2016-08-17 12:22:07    阅读次数:150
[LintCode] Reverse Integer 翻转整数
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 ...
分类:其他好文   时间:2016-08-17 01:22:13    阅读次数:386
306. Additive Number
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 ...
分类:其他好文   时间:2016-08-16 00:20:25    阅读次数:156
NVIDIA DIGITS 学习笔记(NVIDIA DIGITS-2.0 + Ubuntu 14.04 + CUDA 7.0 + cuDNN 7.0 + Caffe 0.13.0)
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... ...
分类:系统相关   时间:2016-08-14 17:45:51    阅读次数:468
sum-root-to-leaf-numbers-LeetCode
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 ...
分类:其他好文   时间:2016-08-14 07:16:36    阅读次数:155
UVA 11029 || Lightoj 1282 Leading and Trailing 数学
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 ...
分类:其他好文   时间:2016-08-12 21:36:08    阅读次数:114
leetcode No93. Restore IP Addresses
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....
分类:其他好文   时间:2016-08-11 22:46:44    阅读次数:116
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