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UVA Closest Sums(二分查找)
Problem D Closest Sums Input: standard input Output: standard output Time Limit: 3 seconds   Given is a set of integers and then a sequence of queries. A query gives you a number and asks to fin...
分类:其他好文   时间:2015-02-02 18:15:34    阅读次数:168
Leetcode#15 3Sum
原题地址跟2sum、3sum、4sum、3sum closest一系列,参见这篇文章排序+DFS+剪枝+二分查找如果最后一个元素不二分查找会超时??代码: 1 vector > res; 2 3 void dfs(vector &num, vector ans, int pos, int left....
分类:其他好文   时间:2015-02-01 23:03:02    阅读次数:199
LeetCode --- 16. 3Sum Closest
题目链接:3Sum Closest Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integers. You may assume that each input...
分类:其他好文   时间:2015-01-30 22:42:30    阅读次数:252
Leetcode#16 3Sum Closest
原题地址跟2Sum、3Sum、4Sum类似,都是:排序+搜索+剪枝令sum = num[i] + num[j] + num[k] + (-target)(将-target看做一个必选的数),那这道题就跟4Sum(参见这篇文章)几乎一样了,变成了寻找最接近0的和。需要剪枝的地方:1. 数字太小,肯定不...
分类:其他好文   时间:2015-01-30 20:53:43    阅读次数:122
LeetCode 3Sum Closest
Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integers. You may assume that each input would have exact...
分类:其他好文   时间:2015-01-27 16:30:06    阅读次数:121
[LeetCode][Python]16: 3Sum Closest
# -*- coding: utf8 -*-'''__author__ = 'dabay.wang@gmail.com'16: 3Sum Closesthttps://oj.leetcode.com/problems/3sum-closest/Given an array S of n intege...
分类:编程语言   时间:2015-01-21 06:37:11    阅读次数:170
[Leetcode] 16 - 3Sum Closest
原题链接:https://oj.leetcode.com/problems/3sum-closest/ 这道题基本就是3sum的变形,就直接按照3sum先排序,然后取当前数,再左右指针对于后面的数组向内扫描,但是因为是求closest,只有diff = 0的时候才能完全跳出当前循环,否则则需要继续扫描直到相遇或diff = 0。 所以复杂度是排序时间加上扫描时间O(nlogn ...
分类:其他好文   时间:2015-01-20 15:52:14    阅读次数:171
二分搜索 float
Given a sorted array of floats, find the index of the number closest to x: Example: {1.2, 2.5, 9.3} x = 5, return 1#include#include#include using name...
分类:其他好文   时间:2015-01-19 15:39:44    阅读次数:160
gcc源代码分析,grokparms ()函数分析
arg_types = grokparms (TREE_OPERAND (declarator, 1),                  funcdef_flag                  /* Say it's a definition                     only for the CALL_EXPR                     closest ...
分类:其他好文   时间:2015-01-17 16:36:26    阅读次数:189
3Sum Closest Leetcode Python
Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integers. You may assume that each input would have exactly...
分类:编程语言   时间:2015-01-17 12:43:35    阅读次数:193
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