We have a sorted set of digits D, a non-empty subset of {'1','2','3','4','5','6','7','8','9'}.  (Note that '0' is not included.) Now, we write numbers using these digits, using each digit as many times as we want.  For example, if D = {'1','3','5'},…

We have a sorted set of digits D, a non-empty subset of {'1','2','3','4','5','6','7','8','9'}.  (Note that '0' is not included.) Now, we write numbers using these digits, using each digit as many times as we want.  For example, if D = {'1','3','5'},…

应该是常数 N的位数时间级别 我的这个方法超时很严重...但是特此记录 费劲巴拉写的... 超时: int atMostNGivenDigitSet(char** D, int DSize, int N) { int *array = (int *)malloc(sizeof(int) * 10); for (int i = 0; i < 10; i ++) array[i] = 0; for (int j = 1; j < 10; j ++) { if (j - 1 < DSize)…

We have a sorted set of digits D, a non-empty subset of {'1','2','3','4','5','6','7','8','9'}.  (Note that '0' is not included.) Now, we write numbers using these digits, using each digit as many times as we want.  For example, if D = {'1','3','5'},…

题目: We have a sorted set of digits D, a non-empty subset of {'1','2','3','4','5','6','7','8','9'}.  (Note that '0' is not included.) Now, we write numbers using these digits, using each digit as many times as we want.  For example, if D = {'1','3','5…

2019-10-14 22:21:29 问题描述: 问题求解: 暴力求解必然会超时,那么就需要考虑数学的方法来降低时间复杂度了. public int atMostNGivenDigitSet(String[] D, int N) { int n = D.length; int res = 0; char[] chs = new char[n]; for (int i = 0; i < n; i++) { chs[i] = D[i].charAt(0); } char[] nums = Stri…

All LeetCode Questions List(Part of Answers, still updating) 题目汇总及部分答案(持续更新中) Leetcode problems classified by company 题目按公司分类(Last updated: October 2, 2017) .   Top Interview Questions # Title Difficulty Acceptance 1 Two Sum Medium 17.70% 2 Add Two N…

# Title Solution Acceptance Difficulty Frequency     4 Median of Two Sorted Arrays       27.2% Hard     10 Regular Expression Matching       25.6% Hard     23 Merge k Sorted Lists       35.8% Hard     25 Reverse Nodes in k-Group       37.7% Hard    …

http://codeforces.com/contest/747/problem/F cf #387 div2 problem f 非常好的一道题.看完题,然后就不知道怎么做,感觉是dp,但是不知道怎么枚举.还有就是一般求第k小的思路一般是什么?对这类题目理解的不是很好. 这道题,跟上一篇的题解里面写的hdu 1002 递增数的题目的解法差不多,但是底层的求解需要花一些时间去推敲! 不会做,就看官方题解,看不懂说的什么.就从下面的讨论找大神的题解. I can describe my solu…

http://www.intel.com/content/www/us/en/processors/processor-numbers.html About Intel® Processor Numbers The processor number is one of several factors, along with processor brand, specific system configurations, and system-level benchmarks, to be con…