分治与汉诺塔 分治算法 分治算法介绍 分治法是一种很重要的算法。字面上的解释是“分而治之”,就是把一个复杂的问题分成两个或更多的相同或相似的子问题,再把子问题分成更小的子问题……直到最后子问题可以简单的直接求解,原问题的解即子问题的解的合并。这个技巧是很多高效算法的基础,如排序算法(快速排序,归并排 ...
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其他好文 时间:
2020-02-20 10:12:53
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62
Description Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. For example, two is written as II in Roman numeral, jus ...
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其他好文 时间:
2020-02-20 09:28:12
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79
In a given 2D binary array , there are two islands. (An island is a 4 directionally connected group of s not connected to any other 1s.) Now, we may c ...
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其他好文 时间:
2020-02-19 23:40:26
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85
Given two strings a and b we define a*b to be their concatenation. For example, if a = "abc" and b = "def" then a*b = "abcdef". If we think of concate ...
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编程语言 时间:
2020-02-18 16:33:41
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88
two pointers通向扫描法。 #include<iostream> #include<algorithm> using namespace std; typedef long long LL; LL a[100010] = {0}; int main() { int n,p,max = -1 ...
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其他好文 时间:
2020-02-18 13:04:59
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49
Polycarpus has a ribbon, its length is n. He wants to cut the ribbon in a way that fulfils the following two conditions: After the cutting each ribbon ...
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其他好文 时间:
2020-02-18 13:04:42
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81
原题链接在这里:https://leetcode.com/problems/elimination-game/ 题目: There is a list of sorted integers from 1 to n. Starting from left to right, remove the fi ...
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其他好文 时间:
2020-02-18 09:56:29
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79
1.题目描述 英文版: Given an array nums of n integers and an integer target, find three integers in nums such that the sum is closest to target. Return the su ...
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其他好文 时间:
2020-02-18 09:54:23
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55
Summation of primes The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17. Find the sum of all the primes below two million. 素数的和 所有小于10的素数的和是2 + 3 + 5 ...
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其他好文 时间:
2020-02-17 20:02:02
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77
Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining. ...
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移动开发 时间:
2020-02-17 19:37:00
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78